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In Situ Formation of the Li3Bi Alloy Phase Interface for Robust Garnet Solid-State Lithium Batteries 认领 引用
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作者 Pengfei You Yanfeng Wang +6 位作者 Jijun Lu Liao Shen Hao Xu Zhongqiu Tong Fengshuo Xi Wenhui Ma Shaoyuan Li 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期640-649,共10页
Garnet-type electrolyte Li6.4La3Zr1.4Ta0.6O12(LLZTO)is a promising component for commercializing solid-state batteries owing to its wide electrochemical window,good stability,and high shear modulus.Howe... Garnet-type electrolyte Li6.4La3Zr1.4Ta0.6O12(LLZTO)is a promising component for commercializing solid-state batteries owing to its wide electrochemical window,good stability,and high shear modulus.However,poor interface wettability and lithium dendrite growth limit the practical application of the LLZTO electrolyte.In this study,a bismuth metal film was introduced at the electrolyte interface to enhance the performance of lithium metal solid-state batteries through vacuum thermal evaporation.Through the conversion reaction between bismuth and lithium,an intermediate Li3Bi layer was formed in situ at the Li/LLZTO interface.This intermediate layer exhibited excellent lithium affinity and promoted close contact between the solid electrolyte and lithium metal,thereby reducing the interfacial resistance by approximately 6.17 times.Furthermore,the mechanically resilient Li3Bi interlayer effectively suppressed stress variations induced by lithium dendrite growth,while its provision of ordered Li+pathways ensured uniform lithium deposition.The lithium symmetric batteries exhibited high critical current densities of 1.1 mA cm-2.In addition,the corresponding solid-state LFP/LLZTO@Bi/Li batteries achieved cycling stability over300 cycles with a retention capacity of 85.67%.This study provides a simple and integrated strategy for developing highperformance quasi-solid-state lithium metal batteries. 展开更多
关键词 Li₃Bi alloy phase interface LLZTO solid-state lithium metal batteries vacuum thermal vaporization
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In-situ electro-deposition synthesis of MnOx-NiCo2O4 monolithic catalyst with rich phase interfaces 认领 引用 被引量：1
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作者 Dongdong Wang Yingchao Du +2 位作者 Xiaoze Wang Zhaxi Cuo Yunfa Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2021年第1期21-24,共4页
A hierarchically structured MnOx-NiCo2O4 monolithic catalyst with rich phase interfaces was designed by a simple,eco-friendly and time-saving in-situ electro-deposition method.The abundance of active oxygen s... A hierarchically structured MnOx-NiCo2O4 monolithic catalyst with rich phase interfaces was designed by a simple,eco-friendly and time-saving in-situ electro-deposition method.The abundance of active oxygen species due to this rich phase interfaces contributed to the excellent benzene combustion performance of MnOx-NiCo2O4-2:2 sample,oxidizing about 90% of benzene(T90) at 198℃ under 12000 h-1 gaseous hourly space velocity.This work shed new light on the design of excellent monolithic catalysts,which might pave the way for the industrialization of benzene combustion. 展开更多
关键词 Rich phase interfaces In-situ electro-deposition Active oxygen species Benzene combustion MnOx-NiCo2O4
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Design of phase interface and defect in niobium-nickel oxide for ultrafast Li-ion storage 认领 引用 被引量：1
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作者 Haiting Chen Haoyan Cheng +5 位作者 Hangchen Liu Yibo Hu Tongtong Yuan Shuge Dai Meilin Liu Hao Hu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第16期145-152,共8页
Niobium pentoxide(Nb2O5)has attracted much attention in lithium batteries due to its advantages of high operating voltage,large theoretical capacity,environmental friendliness and cost-effectiveness.However,the intrin... Niobium pentoxide(Nb2O5)has attracted much attention in lithium batteries due to its advantages of high operating voltage,large theoretical capacity,environmental friendliness and cost-effectiveness.However,the intrinsic poor electrical conductivity,sluggish kinetics,and large volume changes hinder its electrochemical performance at high power density,making it away from the requirements for practical applications.In this research work,we regulate the electron transport of niobium-nickel oxide(NiNbO)anode material with enhanced structural stability at high power density by constructing the two-phase boundaries between niobium pentoxide(Nb2O5)and nickel niobate(NiNb2O6)through simple solid phase reaction.In addition,the presence of lattice defects in NiNbO-F further speeds up the transport of Li+and promotes the electrochemical reaction kinetics more effectively.The two-phase boundaries and defect modulated anode material displays high Li+diffusion coefficient of 1.63×10−10 cm2 s−1,pretty high initial discharge capacity of 222.8 mAh g−1 at 1 C,extraordinary high rate performance(66.7 mAh g−1)at an ultrahigh rate(100 C)and ultra-long cycling stability under high rate of 25 C(83.4 mAh g−1 after 2000 cycles)with only 0.016%attenuation per cycle.These results demonstrate an effective approach for developing electrode materials that greatly improve rate performance and durability. 展开更多
关键词 Niobium oxide Phase interface Defects Rate performance Lithium-ion batteries
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PHASE INTERFACE SEGREGATION OF Mg IN A Ni-BASE SUPERALLOY IN100 认领 引用
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作者 GE Honglin 《Acta Metallurgica Sinica(English Letters)》 CAS 1989年第6期408-411,共4页
The segregation of Mg to phase interfaces in a nickel base superalloy IN 100 has been investi- gated using EPT(Electron Microprobe Technique).AES(Auger Electron Spectroscopy) and EDS analyses on thin TEM film.The resu... The segregation of Mg to phase interfaces in a nickel base superalloy IN 100 has been investi- gated using EPT(Electron Microprobe Technique).AES(Auger Electron Spectroscopy) and EDS analyses on thin TEM film.The results show that Mg segregates to the phase inter- faces of MC/γ and γ′/γ.The segregation concentration and layer thickness of Mg on MC/γ phase interface are larger than that on γ′/γ phase interface.Mg is not only a grain boundary segregation element,but also a phase interface segregation one. 展开更多
关键词 magnesium IN100 phase interface segregation
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Induction mechanisms of high-density nano twins during solidification process:Reducing stacking fault energy ofγphase by Re and forming highly mismatched B2(Re)/α2interface 认领 引用 被引量：1
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作者 Kexuan Li Hongze Fang +4 位作者 Lingyan Zhou Xiaokang Yang Xianfei Ding Yongchun Zou Ruirun Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第13期269-284,共16页
It is extremely difficult to introduce high-density nano twins during the solidification process of TiAl alloy.In this study,high-density nanotwins are inducted in the as-cast Ti48Al2Cr alloyed by adding Re element.Ph... It is extremely difficult to introduce high-density nano twins during the solidification process of TiAl alloy.In this study,high-density nanotwins are inducted in the as-cast Ti48Al2Cr alloyed by adding Re element.Phase transformation,morphology characteristics of nano twins,compressive and tensile proper-ties,and the related mechanisms have been studied.Results show that B2 phase enriched with Re tends to precipitate along theα2/γinterface within lamellar colony.The stacking fault energy(SFE)ofγphase decreases from 43 mJ/m2 to 16 mJ/m2 as Re content increases from 0 at.%to 0.6 at.%,decreasing the crit-ical shear stress for twin formation.Compared to the mismatch value ofα2/γinterface(0.004),which of B2/α2 and B2/γinterfaces increase to 0.247 and 0.149,respectively.Driven by high interfacial stress,high-density dislocations are generated at the B2/α2 interface,providing the dislocation slip channel for the formation of stacking faults(SFs)and nanotwins at the B2/γinterface.Therefore,the mechanism of inducting high-density nanotwins is to reduce the stacking fault energy ofγphase by Re and form highly mismatched B2/α2 interface.Compressive strength and the strain increase from 1723 MPa to 2398 MPa and 29%to 39%as Re content increases from 0 at.%to 0.6 at.%,respectively.Tensile strength increases from 356 MPa to 452 MPa without sacrificing plasticity.The improvement in strength and plasticity are attributed to the nano-twinning strengthening and interfacial thermal mismatch strengthening.Forming nanotwins during solidification process serve as the nucleation sites for newly formed twins during de-formation process,increasing the deformation tolerance of TiAl alloy. 展开更多
关键词 TiAl alloy Nanotwins Stacking fault energy Phase interface Microstructure evolution Mechanical properties
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Crack propagation path deflection induced by α-Mg/LPSO interface and its effect on the fracture toughness of cast Mg-RE-Zn alloys 认领 引用 被引量：2
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作者 Qiankun Li Li Jin +4 位作者 Fenghua Wang Shuai Dong Jian Zeng Fulin Wang Jie Dong 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第1期124-137,共14页
Received 7 August 2024;received in revised form 13 November 2024;accepted 18 November 2024 Available online 30 November 2024 Abstract The poor fracture toughness limits the widespread application of high-strength cast... Received 7 August 2024;received in revised form 13 November 2024;accepted 18 November 2024 Available online 30 November 2024 Abstract The poor fracture toughness limits the widespread application of high-strength cast Mg-Re-Zn alloys.Regulating the alloy microstructure,with phases such asα-Mg,blocky LPSO(long-period stacking order),and lamellar LPSO,offers various possibilities to enhance ductility by casting and heat treatment.This study categorizes different interface types concerning crack initiation,propagation,and ultimate fracture toughness.It distinctly presents the results of interface modulation related to alloy composition and heat treatment,elucidating the influence on crack initiation and propagation paths.Consequently,it proposes structural configurations rule and relevant heat treatment processes that can optimize and improve alloy fracture toughness.Blocky LPSO should have appropriate dispersion and size while avoiding lamellar LPSO. 展开更多
关键词 Mg-Re-Zn alloy LPSO Fracture toughness PFZ Crack deflection Phase interface cohesion
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Numerical simulation of flow field distribution and stability in semi-filled multiphase horizontal centrifugal casting 认领 引用
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作者 Long-Chao Liu Yu-Long Cao +3 位作者 Sheng Liu Chong-Sheng Ma Zheng-Rong Zhao Guang-Qiang Li 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第5期133-146,共14页
With the increasing quality requirements and demand for rotary steel parts,the lack of research on the centrifugal casting’s flow field in semi-filled molds has limited the development of casting parameterization.The... With the increasing quality requirements and demand for rotary steel parts,the lack of research on the centrifugal casting’s flow field in semi-filled molds has limited the development of casting parameterization.The development of centrifugal multiphase flow fields,interphase interface formation,and fluid stability in thick-walled pipe fittings were examined.The fluctuation and stability of the flow field during steel and slag co-pouring are innovatively characterized using finite element analysis and casting experiments.The results show that the movement of the conventional semi-filled horizontal centrifugal flow field can be divided into three stages:filling fluctuation period,stable period,and weak instability period.Producers need to control initial solidification during the stable period to avoid defects and performance changes caused by melt instability.The pressure difference due to gravity causes the flow field to shift,and the center of gravity(CG)of the fluid in the stable period deviates nearly vertically and fluctuates in an elliptical shape,tending towards the central axis with increasing mold speed.Experimental castings exhibited eccentric distribution and phase interface fluctuation,while actual oxygen addition,slag fluctuation,and solidification shrinkage caused the CG offset to be smaller than that of ideal pure fluid.Additionally,the instantaneous filling assumption can be used to characterize the stable stage of the melt flow field,with an error of only 1.2%compared to non-instantaneous filling,while reducing computational cost by 30%. 展开更多
关键词 Centrifugal casting Flow stability Numerical simulation Phase interface Center of gravity
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Discussion on the thermal conductive network threshold of Al2O3/Co-continuous phase polymer composites 认领 引用
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作者 Qigang Li Jianyun Ding +4 位作者 Youfang Zhang Weiwei Lei Zhaoyang Wei Chao Chen Dean Shi 《Nano Materials Science》 EI CAS CSCD 2026年第2期466-473,共8页
Achieving high thermal conductivity in polymer composites with micro or nanoparticle fillers are challenging.Typically,over 50 vol%filler loading is necessary to form a thermal conductive network.However,even with suc... Achieving high thermal conductivity in polymer composites with micro or nanoparticle fillers are challenging.Typically,over 50 vol%filler loading is necessary to form a thermal conductive network.However,even with such a network in place,the increase in thermal conductivity may not be significant compared to that in electrically conductive composites.To clarify the ideal filler network structure,we endeavored to selectively disperse nano-sized Al2O3nanoparticles at the interface of co-continuous SEBS/PA6 blends,with and without various filler surface modification methods.A thermal conductive network forms when all interface areas are fully covered by 2.56 vol%of Al2O3nanoparticles(very close to theoretical loading content 2.29 vol%).In this case,the Al2O3nanoparticle has the highest thermal conductive contribution(TCC).However,the absolute TCC values are extremely low because of the interfacial thermal resistance and it will decrease when the filler content exceeds 2.56 vol%,indicating that some nanoparticles are dispersed separately out of the existed thermal conductive network.These findings suggest that the construction of a connected thermal conductive network,relatively lower interfacial thermal resistance and the precise positioning of fillers within this network are essential for achieving high thermal conductivity composites. 展开更多
关键词 Al2O3nanoparticles Co-continuous structure Selective distribution Thermal conducive Phase interface
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Phase change thermal interface materials:From principles to applications and beyond 认领 引用
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作者 Chenggong Zhao Yifan Li +4 位作者 Chen Jiang Yuanzheng Tang Yan He Wei Yu Bingyang Cao 《Chinese Physics B》 SCIE EI CAS CSCD 2025年第9期386-402,共17页
Phase change thermal interface materials(PC-TIMs)have emerged as a promising solution to address the increasing thermal management challenges in electronic devices.This is attributed to their dual mechanisms of latent... Phase change thermal interface materials(PC-TIMs)have emerged as a promising solution to address the increasing thermal management challenges in electronic devices.This is attributed to their dual mechanisms of latent heat absorption and phase change-induced interfacial wettability.This review explores the fundamental principles,material innovations,and diverse applications of PC-TIMs.The heat transfer enhancement mechanisms are first underlined with key factors such as thermal carrier mismatch at the microscale and contact geometry at the macroscale,emphasizing the importance of material selection and design for optimizing thermal performance.Section 2 focuses on corresponding experimental approaches provided,including intrinsic thermal conductivity improvements and interfacial heat transfer optimization.Section 3 discusses common methods such as physical adsorption via porous materials,chain-crosslinked network designs,and core-shell structures,and their effects on leakage prevention,heat transfer enhancement,and application flexibility.Furthermore,the extended applications of PC-TIMs in thermal energy storage are explored in Section 4,suggesting their potential in diverse technological fields.The current challenges in interfacial heat transfer research and the prospect of PC-TIMs are also discussed.The data-driven machine learning technologies will play an increasingly important role in addressing material development and performance prediction. 展开更多
关键词 phase change thermal interface materials contact thermal resistance interfacial heat transfer encapsulation
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Customizing the microenvironment of CO2 electrocatalysis via three‐phase interface engineering 认领 引用 被引量：14
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作者 Xianlong Zhou Hao Liu +3 位作者 Bao Yu Xia KostyaOstrikov Yao Zheng Shi‐Zhang Qiao 《SmartMat》 2022年第1期111-129,共19页
Converting CO2 into high‐value fuels and chemicals by renewable‐electricitypowered electrochemical CO2 reduction reaction(CRR)is a viable approach toward carbon‐emissions‐neutral processes.Unlike the thermoc... Converting CO2 into high‐value fuels and chemicals by renewable‐electricitypowered electrochemical CO2 reduction reaction(CRR)is a viable approach toward carbon‐emissions‐neutral processes.Unlike the thermocatalytic hydrogenation of CO2 at the solid‐gas interface,the CRR takes place at the three‐phase gas/solid/liquid interface near the electrode surface in aqueous solution,which leads to major challenges including the limited mass diffusion of CO2 reactant,competitive hydrogen evolution reaction,and poor product selectivity.Here we critically examine the various methods of surface and interface engineering of the electrocatalysts to optimize the microenvironment for CRR,which can address the above issues.The effective modification strategies for the gas transport,electrolyte composition,controlling intermediate states,and catalyst engineering are discussed.The key emphasis is made on the diverse atomic‐precision modifications to increase the local CO2 concentration,lower the energy barriers for CO2 activation,decrease the H2O coverage,and stabilize intermediates to effectively control the catalytic activity and selectivity.The perspectives on the challenges and outlook for the future applications of three‐phase interface engineering for CRR and other gasinvolving electrocatalytic reactions conclude the article. 展开更多
关键词 catalytic selectivity electrochemical CO2reduction intermediates microenvironment three‐phase interface
Superior multiphase interfaces in AgCuTe-based composite with significantly enhanced thermoelectric properties 认领 引用 被引量：3
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作者 Wenpei Li Zhonghai Yu +8 位作者 Chengyan Liu Ying Peng Baoquan Feng Jie Gao Guojing Wu Xiaobo Bai Junliang Chen Xiaoyang Wang Lei Miao 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2023年第8期1511-1520,共10页
It is common sense that a phase interface(or grain boundary)could be used to scatter phonons in thermoelectric(TE)materials,resulting in low thermal conductivity(k).However,a large number of impurity phases are always... It is common sense that a phase interface(or grain boundary)could be used to scatter phonons in thermoelectric(TE)materials,resulting in low thermal conductivity(k).However,a large number of impurity phases are always so harmful to the transport of carriers that poor TE performance is obtained.Here,we demonstrate that numerous superior multiphase(AgCuTe,Ag−2Te,copper telluride(Cu2Te and Cu2−xTe),and nickel telluride(NiTe))interfaces with simultaneous strong phonon scattering and weak electron scattering could be realized in AgCuTe-based TE materials.Owing to the similar chemical bonds in these phases,the depletion region at phase interfaces,which acts as carrier scattering centers,could be ignored.Therefore,the power factor(PF)is obviously enhanced from~609 to~832μW·m−1·K−2,and k is simultaneously decreased from~0.52 to~0.43 W·m−1·K−1 at 636 K.Finally,a peak figure of merit(zT)of~1.23 at 636 K and an average zT(zTavg)of~1.12 in the temperature range of 523–623 K are achieved,which are one of the best values among the AgCuTe-based TE materials.This study could provide new guidance to enhance the performance by designing superior multiphase interfaces in the TE materials. 展开更多
关键词 thermoelectric(TE)materials AgCuTe phase interface carrier scattering phonon scattering
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Influence ofα/βinterface phase on the tensile properties of laser cladding deposited Ti–6Al–4V titanium alloy 认领 引用 被引量：26
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作者 Zhuang Zhao Jing Chen +3 位作者 Shuai Guo Hua Tan Xin Lin Weidong Huang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2017年第7期675-681,共7页
Laser cladding deposited Ti-6Al-4V titanium alloy universally shows more complex microstructures,each of which has significant effect on mechanical properties.Of particularα/βinterface phase has been observed in thi... Laser cladding deposited Ti-6Al-4V titanium alloy universally shows more complex microstructures,each of which has significant effect on mechanical properties.Of particularα/βinterface phase has been observed in this paper under certain conditions.It demonstrates that the influence of theα/βinterface phase on the tensile properties is closely associated with dislocations and twin substructure through comparison experiments.The results show that theα/βinterface phase hinders dislocation motion and decreases effective slip length.In addition,the twin substructure has been activated in theα/βinterface phase during tensile process and has acted somehow like grain boundaries.Therefore,the strength and the work-hardening rate of the laser cladding deposited Ti-6Al-4V titanium alloy have been significantly improved due to the dynamic Hall-Petch effect.Besides,theα/βinterface phase leads to more uniform dislocations distribution,which implies that relative lower local concentrated stress will be produced along theα/βinterface phase or colony boundary after the same amount of plastic deformation.Moreover,the twinning-induced plasticity effects in theα/βinterface phase further increase the plastic deformation capacity.These results in higher elongation for the laser cladding deposited Ti-6Al-4V titanium alloy.It can be concluded that the current work suggests an effective method to simultaneously improve the strength and plasticity of laser cladding deposited Ti-6Al-4V titanium alloy based on theα/βinterface phase. 展开更多
关键词 Ti-6Al-4V Laser cladding deposition α/βInterface phase Dislocation Twins Tensile properties
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Effects of additives on the phase transformation, occurrence state, and the interface of the Ti component in Ti-bearing blast furnace slag 认领 引用 被引量：6
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作者 Li Zhang Wu Zhang +1 位作者 Ju-hua Zhang Guang-qiang Li 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2016年第9期1029-1040,共12页
The influences of additives on the phase transformation, occurrence state, and the interface of the Ti component in Ti-bearing blast furnace slag were investigated. After oxidation, most of the Ti component in the sla... The influences of additives on the phase transformation, occurrence state, and the interface of the Ti component in Ti-bearing blast furnace slag were investigated. After oxidation, most of the Ti component in the slag was enriched into the perovskite phase, which served as the Ti-rich phase during the crystallization process. The phase transformation, occurrence state, and the interface of the Ti component were observed to be affected by the addition of different types of agents. During the oxidation process, titanaugite and Ti-rich diopside phases gradually transformed into non-Ti phases（anorthite： CaMgSi2O6 and CaAl2Si2O8） in the form of dendrites or columns, which were observed to be distributed at the surface of the perovskite phase. Several more cracks appeared along the grain boundaries of the perovskite phase after the addition of P2O5, facilitating the liberation of the perovskite phase. Composite additives combining both an acid and a base, such as CaO ＋ CaF2 or P2O5 ＋ CaF2, were used. We observed that the disadvantages of using single additives were successfully overcome. 展开更多
关键词 blast furnace slag titanium additives phase transformation interfaces
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Influence of electrochemical hydrogen-charging on microstructural damage and corrosion performance of an as-cast Ti–6Al–4V(wt.%)alloy 认领 引用 被引量：1
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作者 Zi-Shuo Chen Bao-Jie Wang +2 位作者 Shuo Wang Xiang-Bo Xu Dao-Kui Xu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第2期466-477,共12页
Through investigating the influence of electrochemically charged hydrogen on microstructural damage and corrosion performance of an as-cast Ti-6Al-4V(in wt.%)alloy,it demonstrated that after being performed hydrogen-c... Through investigating the influence of electrochemically charged hydrogen on microstructural damage and corrosion performance of an as-cast Ti-6Al-4V(in wt.%)alloy,it demonstrated that after being performed hydrogen-charging for 4 h at an applied current density value of 50 mA/cm2,micro cracks were preferentially presented in α-Ti phase and at interfaces between α-Ti and β-Ti phases.Moreover,the quantity of cracks increased with extending the hydrogen-charging time.Failure analysis demonstrated that micro cracks were caused by the formation of needle-like δ-TiH2 hydride.For 4 h-charged sample,all of the exposed α-Ti phase can be changed into hydrides,resulting in the formation of a layer of hydride with the thickness value of 5μm.After hydrogen-charging for 8 and 16 h,the thicknesses values of formed hydride layers were 8 and 18μm,respectively.Due to anodic dissolution of hydrides,the corrosion resistance of charged samples was degraded.The determined current density values of the uncharged,4 h-charged,8 h-charged and 16 h-charged samples were 34.7,42.3,50.7 and 63.4 nA/cm2,respectively. 展开更多
关键词 Titanium alloy Hydrogen embrittlement Hydride Corrosion mechanism Phase interface
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Anchoring phase change interface enhances solar thermal energy storage 认领 引用 被引量：1
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作者 Qiao Xu Jingwen Zhu +5 位作者 Yan Wang Xianglei Liu Tao Wang Jianguo Wang Shushan Lv Yongliang Li 《Science Bulletin》 SCIE EI CAS CSCD 2026年第10期2497-2507,共11页
Solar thermal energy storage based on phase change materials(PCMs)provides a compact,nearisothermal pathway toward decarbonizing thermal energy supplies.However,the intrinsic recession of the solid-liquid interface aw... Solar thermal energy storage based on phase change materials(PCMs)provides a compact,nearisothermal pathway toward decarbonizing thermal energy supplies.However,the intrinsic recession of the solid-liquid interface away from the irradiated surface leads to gradually increasing thermal resistance and decaying charging rate with time.To address this challenge,we demonstrate that anchoring the phase change interface achieves rapid,efficient,and continuous solar thermal charging.This is enabled by dynamically circulating photothermal core-shell composite phase change particles(CPCPs)to continuously renew the irradiated surface.Scalable CPCPs,fabricated via extrusion-spheronization,consist of a MnFe2O4photothermal shell and an MgO/h-BN/NaCl-KCl core integrating broadband photon absorption with high thermal conductivity within a single particle.The MnFe2O4shell delivers a solarweighted absorptance of 91.1%,facilitated by near-surface photon confinement and internal multiple scattering.Within the core,a percolated MgO skeleton combined with in-plane h-BN phonon transport pathways forms a hierarchical ceramic network.The interfacial phonon-spectrum overlap in this structure reduces Kapitza resistance,elevating the effective thermal conductivity to 6.84 W m-1K-1,while maintaining a high energy storage density of 844.7 kJ kg-1.By matching the incident solar flux with particle stream mass flow rates,the system attains a charging power of 0.54 kW under 1.08 kW solar input.This yields a solar thermal storage efficiency of 49.7%,a 26-fold improvement over conventional diffusion-limited approaches(1.9%).This work introduces a paradigm shift from the conventional diffusion-limited"material-static,interface-retreating"mode to"material-movingi,nterfaceanchoring"mode,leading to rapid,efficient,and continuous solar thermal energy storage. 展开更多
关键词 Solar thermal energy storage Core-shell phase change particles Phase change interface
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BRIDGE-TOUGHENING ANALYSIS OF THE FIBER REINFORCED COMPOSITE CONTAINING INTERPHASE EFFECT 认领 引用
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作者 Zhangjian, Wu Shouwen, Yu 《Acta Mechanica Solida Sinica》 SCIE EI 1994年第1期1-14,共14页
A detailed fracture mechanics analysis of bridge-toughening in a fiber reinforced composite is presented in this paper. The integral equation governing bridge-toughening as well as crack opening displacement (COD) for... A detailed fracture mechanics analysis of bridge-toughening in a fiber reinforced composite is presented in this paper. The integral equation governing bridge-toughening as well as crack opening displacement (COD) for the composite with interfacial layer is derived from the Castigliano's theorem and interface shear-lag model. A numerical result of the COD equation is obtained using the iteration solution of the second Fredholm integral equation. In order to investigate the effect of various parameters on the toughening, an approximate analytical solution of the equation is present and its error analysis is performed, which demonstrates the approximate solution to be appropriate. A parametric study of the influence of the crack length, interfacial shear modules, thickness of the interphase, fiber radius, fiber volume fraction and properties of materials on composite toughening is therefore carried out. The results are useful for experimental demonstration and toughening design including the fabrication process of the composite. 展开更多
关键词 Approximation theory Cracks Error analysis Failure analysis Fracture mechanics Integral equations Iterative methods Mathematical models Phase interfaces Structural design Toughening
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INVESTIGATION ON 1/3[111] FRANK LEDGE DISLOCATIONS ATα_2/γINTERFACE IN HOT-DEFORMED Ti-45Al-10Nb ALLOY 认领 引用
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作者 J.G WanG L.C Zhang G.L. Chenand HQ. Ye(Laboratory of Atond Imaging of Solids, Institute of Metal Research, Chinese Academy of Scienc 《Acta Metallurgica Sinica(English Letters)》 EI CAS 1997年第4期323-328,共6页
The dislocation ledges at the α2/7 intedece in a hot-dejormed Ti-45Al-10N alloywere analyzed by high-resolution tmnsmission electron microscopy. A new type ofdislocation ledge containing 1/3[111] Frank partial was fo... The dislocation ledges at the α2/7 intedece in a hot-dejormed Ti-45Al-10N alloywere analyzed by high-resolution tmnsmission electron microscopy. A new type ofdislocation ledge containing 1/3[111] Frank partial was found. The height of the ledgestDas always three [111]γplanes. The Burpers vectore of these diBlocation ledges weredetermined to be 1/2[110] and 1/2<101] corresponding to the 90 dey. and 30 deg.Shockley partials at noral ledges, i.e. 90 dep. ShockIey Partial dislocation +1/3[111]Frank partial dislocation; and 30 deg. Shockley partial dislocation + 1/3[111] Frankparfial dislocations. The jormation mechanism of this new tare of dislocation ledgewas discussed. 展开更多
关键词 titanium aluminide thermomechanical treatment phase interface tmnsmission electron microscopy
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First-principles thermodynamics of metal-oxide surfaces andinterfaces:A case study review 认领 引用 被引量：14
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作者 江勇 许灿辉 蓝国强 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2013年第1期180-192,共13页
An important step for achieving the knowledge-based design freedom on nano-and interfacial materials is attained by elucidating the related surface and interface thermodynamics from the first principles so as to allow... An important step for achieving the knowledge-based design freedom on nano-and interfacial materials is attained by elucidating the related surface and interface thermodynamics from the first principles so as to allow engineering the microstructures for desired properties through smartly designing fabrication processing parameters.This is demonstrated for SnO2 nano-particle surfaces and also a technologically important Ag-SnO2 interface fabricated by in-situ internal oxidation.Based on defect thermodynamics,we first modeled and calculated the equilibrium surface and interface structures,and as well corresponding properties,as a function of the ambient temperature and oxygen partial pressure.A series of first principles energetics calculations were then performed to construct the equilibrium surface and interface phase diagrams,to describe the environment dependence of the microstructures and properties of the surfaces and interfaces during fabrication and service conditions.The use and potential application of these phase diagrams as a process design tool were suggested and discussed. 展开更多
关键词 metal oxide surface phase diagram interface phase diagram equilibrium crystal shape first-principles thermodynamics
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Characterization of the interfacial structure and fracture behavior of in situ synthesized ceramics to reinforce Ni-based composite coatings 认领 引用 被引量：1
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作者 Yuxin Wang Yanchun Dong +5 位作者 Yun Tian Jianing Liu Dongyao Zhang Chunli Qiu Yanqi Zhao Yong Yang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第5期11-25,共15页
This work used the in-situ synthesis of molten-state nitride ceramic phase-reinforced Ni-based alloy coat-ings,aiming to improve the phase-interface bonding through the interdependent co-solidification be-tween molten... This work used the in-situ synthesis of molten-state nitride ceramic phase-reinforced Ni-based alloy coat-ings,aiming to improve the phase-interface bonding through the interdependent co-solidification be-tween molten droplets.The XRD was used to analyze the physical phases of the composite coatings.The microstructure and phase-interface structure were characterized in detail by combining SEM,TEM,HRTEM,FFT,and SAED techniques.Microhardness tester and microforce microhardness tester were em-ployed to measure the surface hardness and elastic modulus of the composite coatings.The fracture be-havior of the composite coatings was characterized by observing the fracture morphology of the coatings using SEM combined with the EDS technique.It was found that the formation mechanisms of inter-facial misfit dislocation assistance,lattice distortion,aggregation of stacking faults,and specific growth orientation between theγ-Ni matrix phase and each ceramic phase in NiCrBSi-TiCrN composite coat-ings improved the lattice matching between the two-phase interface,which resulted in the formation of atomically corresponding coherent lattice relations and stepped interfacial semi-coherent lattice relations,and enhanced the degree of phase-interface bonding.On this basis,the composite coatings with high Cr content further inhibited the expansion of interphase penetration cracks due to the existence of Cr-rich zones at the phase interface,thus exhibiting high fracture toughness.This work provides new opinions on the improvement of phase-interface bonding and composition design of Ni-based composite coatings. 展开更多
关键词 In situ synthesis NiCrBSi-TiCrN composite coating Phase interface Fracture behavior
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Microstructure evolution during superelastic cycles and related elastocaloric effect in N-doped Ti-based shape memory alloys 认领 引用
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作者 Xuejie Zhu Xuexi Zhang +1 位作者 Mingfang Qian Lin Geng 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第31期1-14,共14页
The superelasticity and elastocaloric effect(eCE)in N-free Ti-Nb-Zr-Ta alloy and 0.6N(at.%)-doped Ti-Nb-Zr-Ta alloy were comparatively studied.It was found that nitrogen doping played roles in elevating β→α transit... The superelasticity and elastocaloric effect(eCE)in N-free Ti-Nb-Zr-Ta alloy and 0.6N(at.%)-doped Ti-Nb-Zr-Ta alloy were comparatively studied.It was found that nitrogen doping played roles in elevating β→α transition temperature,refining grain sizes,homogenizing microstructure and altering dominant texture index.The N-free Ti-Nb-Zr-Ta alloy exhibited a temperature change of +6.7/−6.5 K during load-ing/unloading processes in the first superelastic cycle,but gradually decreased to+5.7/−5.2 K in 200th cycle owing to the accumulation of newly codirectional dislocation lines and the following single-system dislocation slip during cyclic tests.By contrast,the N-doped alloy showed a lower initial temperature change of+3.7/−3.1 K but increased to+4.6/−4.1 K in 200th cycle due to the extra caloric effect generated from nanoscale O′phase to α″phase which experienced reorientation to favorable variants in early cycles.Residual α″phase laths derived from stress-induced martensitic transformation(SIMT)appeared in both alloys after tensile cycles.The phase interface between β and α″phase was determined to behave a terraced shape,a type of interface compromising the reversible martensitic transformation(MT)and stabilization of martensite phase.The amount of nanodomains(O′phase)in regions situated at a distance from martensite significantly increased after cycles in both alloys,which accounted for the quickly reached stable superelastic deformation and much narrower hysteresis after the first cycle.Therefore,in light of the reproducibility and reversibility of elastocaloric performance in practical application,N-doped β-Ti shape memory alloys(SMAs)are promising candidate materials. 展开更多
关键词 Ti-based shape memory alloys Elastocaloric effect(eCE) Nitrogen doping Superelasticity Codirectional dislocations Nanodomain Phase interface
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