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Interface reaction between novel microporous magnesia refractory and H13 steel:understanding purification mechanism 认领 引用
1
作者 Chong Tan Hao-Jie Wang +3 位作者 Chang Liu Wen Yan Guang-Qiang Li Qiang Wang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第1期268-276,共9页
High-quality steel production requires superior-performance refractories.To meet the requirements of quality enhancement and efficiency improvement in the steelmaking industry,the application of the novel microporous ... High-quality steel production requires superior-performance refractories.To meet the requirements of quality enhancement and efficiency improvement in the steelmaking industry,the application of the novel microporous magnesia with high strength,remarkable slag resistance,and excellent thermal insulation is promoted.The interface reaction between H13 steel and novel microporous magnesia castable was investigated by using the crucible method,to elucidate the molten steel purification mechanism.The interface microstructure was observed by scanning electron microscopy,and the composition,size,and amount of inclusions were statistically analyzed.A thermal calculation was conducted to gain a deeper understanding of the modification process of inclusions.Fused magnesia castables were used as the blank control.The results show that the average number density and size of inclusions were reduced by 5.99 mm−2 and 0.28μm respectively after the same reaction time because the micropores enhanced the inclusion adsorption.The size of inclusions caused by erosion decreased.Also,more[Mg]dissolved into molten steel over 60 min reaction time and resulted in a 0.49 wt.%increase in inclusion Mg content,which modified the inclusion by decreasing their melting point.Therefore,applying novel microporous magnesia was beneficial for purifying H13 steel. 展开更多
关键词 Interface reaction H13 steel Microporous magnesia castable Molten steel purification mechanism Inclusion adsorption
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Y2O3-enhanced MgO refractory crucibles prepared by Salt Lake magnesium resources and its interface reactions with Ni-TiAl superalloy 认领 引用
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作者 Hu-Tang Zhong Yi-Fei Du +7 位作者 Jun-Feng Chen Bin-Bin Dong Jia-Wei Wei Bing-Qiang Han Wen Yan Shao-Wei Zhang Bing-Xin Wu Nan Li 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第5期82-94,共13页
Y2O3-enhanced MgO refractory crucibles were fabricated based on a novel design of Y2O3crystal boundary-enhanced magnesia raw materials,and the interface reactions between the Y2O3-enhanced MgO refrac... Y2O3-enhanced MgO refractory crucibles were fabricated based on a novel design of Y2O3crystal boundary-enhanced magnesia raw materials,and the interface reactions between the Y2O3-enhanced MgO refractory crucibles and Ni-TiAl superalloy were explored.Micro-CT analysis revealed no substantial infiltration or structural damage to the crucible after two cycles of melting.Y2O3was found to uniformly distribute along MgO grain boundaries,forming a protective core-shell structure that effectively isolates MgO grains from direct contact with the alloy melt.This unique core-shell structure significantly enhanced the crucible’s corrosion resistance.Furthermore,a dense MgCr2O4spinel layer formed at the alloy-crucible interface,serving as a robust barrier against further refractory corrosion.The utilization of high-purity magnesia from Salt Lake resources not only minimized impurity-driven interfacial reactions but also endowed the crucible with superior performance. 展开更多
关键词 Y2O3-enhanced MgO refractory crucible NiTiAl superalloy Isolation layer Interface reaction
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Interface reaction inhibition in phosphor-in-silica glass for high-performance laser illumination 认领 引用
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作者 Gengli Chen Shiyan Li +5 位作者 Wenli Zhou Zezhong Yang Pengyan Fu Liping Yu Shixun Lian Jing Wang 《Science China Materials》 SCIE EI CAS CSCD 2026年第8期4568-4577,共10页
To address the critical challenge of suppressing glass-phosphor interface reactions in high-melting-point phosphor-in-glass(PiG)for high-power laser illumination,this study fabricates a Y3Al5O12:Ce3^(+)(YA... To address the critical challenge of suppressing glass-phosphor interface reactions in high-melting-point phosphor-in-glass(PiG)for high-power laser illumination,this study fabricates a Y3Al5O12:Ce3^(+)(YAG:Ce)phosphor-insilica glass(YAG:Ce-PiSG)with high quantum efficiency and stability by regulating alkali metal oxides.Incorporation of Cs2O notably inhibits SiO2-YAG:Ce reactions,maintaining the PiSG’s internal quantum efficiency(IQE)at 97.7%of pure YAG:Ce(88.3%even after 1400℃calcination for 2 h),while smaller alkali ions(Li+,Na+)accelerate YAG:Ce decomposition.Cs2CO3acts as a flux to promote the melting of nanoSiO2,thereby facilitating the formation of a dense,transparent glass matrix.Owing to the large ionic radius of Cs+and its weak interaction with oxygen ions,the ready generation of non-bridging oxygen(NBO)is suppressed,consequently enabling the formation of a complete silica glass network that prevents alkali metal ions from etching the YAG:Ce phosphor.Leveraging the mixed alkali effect(10%Li2O+5%Cs2O),the PiSG retains excellent luminescence and resists 200℃hydrothermal treatment for 10 h.The PiG film-sapphire device delivers 3080 lm luminous flux and 213 lm W-1 efficiency under blue laser excitation.These findings demonstrate that the developed YAG:Ce-PiSG serves as a highly promising color-conversion material for high-performance laser illumination. 展开更多
关键词 phosphor-in-glass interface reaction inhibition mixed alkali effect high-power laser illumination color-conversion material
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Simultaneous regulation on electrochemical polishing effect and electrode interface reaction with glucose-NaF dual-additive for additive manufactured AlSi10Mg 认领 引用
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作者 Han Liu Minheng Ye +4 位作者 Xianfeng Shen Zuoyan Ye Guowei Wang Ping Xu Chao Wang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第24期82-95,共14页
Additive manufacturing(AM)methods have garnered considerable attention owing to their flexibility in fabricating complex parts with desirable mechanical properties.However,the poor surface quality of the resulting met... Additive manufacturing(AM)methods have garnered considerable attention owing to their flexibility in fabricating complex parts with desirable mechanical properties.However,the poor surface quality of the resulting metal parts remains a severe challenge for the applications.Here,a novel dual-additive synergy strategy is presented,which simultaneously enhances material removal efficiency and regulates electrode surface reactions during electrochemical polishing(ECP)of AM AlSi10Mg.Theoretical studies and experimental characterizations confirm that NaF promotes selective dissolution at the peaks,while glucose acts as a stabilizer for the surface valleys.This approach effectively facilitates the selective removal of surface protrusions,achieving a smoother and more uniform surface finish,resulting in a surface roughness reduction of approximately 86%,compared to a 63%reduction without additives.This study not only provides a new approach for optimizing surface quality of AM AlSi10Mg but also offers new insights into electrolyte design and the stabilization of metal anodes. 展开更多
关键词 Additive manufacturing Electrochemical polishing Interface reaction AlSi10Mg Surface finishing
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Comparison of the interface reaction behaviors of CaO–V2O5 and MnO2–V2O5 solid-state systems based on the diffusion couple method 认领 引用 被引量：9
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作者 Jing Wen Hongyan Sun +3 位作者 Tao Jiang Bojian Chen Fangfang Li Mengxia Liu 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2023年第5期834-843,共10页
The formation mechanism of calcium vanadate and manganese vanadate and the difference between calcium and manganese in the reaction with vanadium are basic issues in the calcification roasting and manganese roasting p... The formation mechanism of calcium vanadate and manganese vanadate and the difference between calcium and manganese in the reaction with vanadium are basic issues in the calcification roasting and manganese roasting process with vanadium slag.In this work,CaO–V2O5 and MnO2–V2O5 diffusion couples were prepared and roasted for different time periods to illustrate and compare the diffusion reaction mechanisms.Then,the changes in the diffusion product and diffusion coefficient were investigated and calculated based on scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS) analysis.Results show that with the extension of the roasting time,the diffusion reaction gradually proceeds among the CaO–V2O5 and MnO2–V2O5 diffusion couples.The regional boundaries of calcium and vanadium are easily identifiable for the CaO–V2O5 diffusion couple.Meanwhile,for the MnO2–V2O5 diffusion couple,MnO2 gradually decomposes to form Mn2O3,and vanadium diffuses into the interior of Mn2O3.Only a part of vanadium combines with manganese to form the diffusion production layer.CaV2O6 and MnV2O6 are the interfacial reaction products of the CaO–V2O5 and MnO2–V2O5 diffusion couples,respectively,whose thicknesses are 39.85 and 32.13μm when roasted for 16 h.After 16 h,both diffusion couples reach the reaction equilibrium due to the limitation of diffusion.The diffusion coefficient of the CaO–V2O5 diffusion couple is higher than that of the MnO2–V2O5 diffusion couple for the same roasting time,and the diffusion reaction between vanadium and calcium is easier than that between vanadium and manganese. 展开更多
关键词 solid-state reaction reaction regularity of calcium and vanadium reaction regularity of manganese and vanadium diffusion couple method interface reaction behavior
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Effect of C and Hf Contents on the Interface Reactions and Wettability between a Ni_3Al-Based Superalloy and Ceramic Mould Material 认领 引用 被引量：13
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作者 Xiaoyan Chen Yizhou Zhou +1 位作者 Tao Jin Xiaofeng Sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2016年第2期177-181,共5页
The influence of active elements C and Hf on the interface reactions and wettability between a Ni3Albased superalloy and the ceramic mould material was studied by using a sessile drop experiment, The microstructure of... The influence of active elements C and Hf on the interface reactions and wettability between a Ni3Albased superalloy and the ceramic mould material was studied by using a sessile drop experiment, The microstructure of the alloy interface was investigated by scanning electron microscopy analysis and the phase identification was performed by X-ray diffraction analysis, The results show that interface reactions occur as C and Hf contents reach a critical value, The critical values for C and Hf to cause interface reactions are 0,12 wt% and 1,17 wt%, respectively, The reaction products contain HfO2 and 9Al2OH,Cr2O3, Adsorptions of Hf and interface reactions improve the wettability obviously, 展开更多
关键词 Superalloys Ceramic Interface reaction Wettability C Hf
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Influence of Si content on interface reaction of iron-based hot-dip aluminizing on Fe sheet 认领 引用 被引量：1
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作者 PENG Hao-ping MA Ming +4 位作者 XI Shi-heng LIU Ya LEI Yun SU Wei SU Xu-ping 《Journal of Central South University》 SCIE EI CAS CSCD 2022年第11期3581-3591,共11页
Based on the diffusion channel,the influence of Si content on the microstructure evolution of iron-based hot-dip Al-χSi coating was analyzed(χ=0,1.5 wt%,3.0 wt% and 7.0 wt%).The results show that the introduction of... Based on the diffusion channel,the influence of Si content on the microstructure evolution of iron-based hot-dip Al-χSi coating was analyzed(χ=0,1.5 wt%,3.0 wt% and 7.0 wt%).The results show that the introduction of Si makes the reaction interface change from the lingual-tooth interface of hot-dip Al to the flat interface of hot-dip Al-Si.It also reduces the thickness of the alloy layer in the coating,especially the Fe2Al5 layer.When the Si content is 1.5 wt%or 3.0 wt%,the diffusion channel crosses the conjugate line of the two-phase region(FeAl3+liquid phase)into the FeAl3 single-phase region,and then moves to the region with higher Si content.Next,the diffusion channel cuts off the conjugate line of FeAl3phase,τ1/τ9 phase,and Fe2Al5phase,which promotes the form ofτ1/τ9 phase.The formedτ1/τ9 phase inhibits the diffusion between Fe and Al atoms.When the Si content is 7.0 wt%,the diffusion channel passes through the two-phase region(liquid phase+τ5)and enters theτ5 single-phase region.The form ofτ5 single-phase region has a strong inhibitory effect on the interatomic diffusion of Fe and Al,thereby reducing the thickness of the coating,especially the Fe2Al5layer. 展开更多
关键词 hot-dip Al-Si diffusion channel interface reaction microstructure evolution coating
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Interface Reaction of SiO_2/Ta and Its Influence on Cu Diffusion 认领 引用 被引量：1
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作者 龙世兵 马纪东 +4 位作者 于广华 赵洪辰 朱逢吾 张国海 夏洋 《Journal of Semiconductors》 CAS 北大核心 2002年第10期1046-1050,共5页
Ta/NiFe film is deposited on Si substrate precoated with SiO_2 by magnetron sputtering.SiO_2/Ta interface and Ta_5Si_3 standard sample are investigated by using X-ray photoelectron spectroscopy (XPS) and peak decompos... Ta/NiFe film is deposited on Si substrate precoated with SiO_2 by magnetron sputtering.SiO_2/Ta interface and Ta_5Si_3 standard sample are investigated by using X-ray photoelectron spectroscopy (XPS) and peak decomposition technique.The results show that there is a thermodynamically favorable reaction at the SiO_2/Ta interface:37Ta+15SiO_2=5Ta_5Si_3+6Ta_2O_5.The more stable products Ta_5Si_3 and Ta_2O_5 may be beneficial to stop the diffusion of Cu into SiO_2. 展开更多
关键词 copper interconnection in ULSI diffusion barrier interface reaction X-ray photoelectron spectroscopy
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Interface reaction in aluminium matrix composite at laser welding 认领 引用 被引量：2
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作者 刘黎明 祝美丽 +1 位作者 许德胜 吴林 《中国有色金属学会会刊：英文版》 2001年第5期671-674,共4页
Interface reaction of SiC w/6061Al aluminium matrix composite subjected to laser welding was studied. It is pointed out that the main reason for bad weldability of the material is concerned with the interface reaction... Interface reaction of SiC w/6061Al aluminium matrix composite subjected to laser welding was studied. It is pointed out that the main reason for bad weldability of the material is concerned with the interface reaction during the welding. Effects of welding parameters on interface reaction were also investigated. The results show that the interface bonding state can be improved by laser beam, and the main welding parameter affecting the strength of weld is laser output power. The smaller the output power, the lower the extent of interface reaction and the better the mechanical properties. 展开更多
关键词 aluminium matrix composite laser welding interface reaction
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Effect of Nb and alloying elements on interface reaction between high Nb-containing TiAl alloys and ZrO_2-based ceramic moulds 认领 引用
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作者 Liang Yang Wen-bin Kan +3 位作者 You-wei Zhang Chun-ling Bao Shi-bing Liu Jun-pin Lin 《China Foundry》 SCIE CAS 2015年第5期362-366,共5页
In the present study, Ti-45Al-(6, 7, 8)Nb(at%) and Ti-45Al-8Nb-0.5(Mn, Si, Y, B) alloys were prepared by arc melting and casting into Zr O2(Y2O3 stabilized) ceramic moulds to study the effect of alloying elements Nb a... In the present study, Ti-45Al-(6, 7, 8)Nb(at%) and Ti-45Al-8Nb-0.5(Mn, Si, Y, B) alloys were prepared by arc melting and casting into Zr O2(Y2O3 stabilized) ceramic moulds to study the effect of alloying elements Nb and Mn, Si, Y, B on the interfacial reaction between casting Ti Al alloys and ceramic moulds by SEM, and the elements' distribution in the interface reaction layer by line scanning. The results showed that with an increase in Nb content, the interfacial reaction weakened and the thickness of the reaction layer decreased gradually. The interface reaction thickness of the alloys with Nb content of 6, 7, 8at% were 60, 34 and 26 μm, respectively. Clearly, the addition of 8at% Nb to Ti-45 Al is the best for the thickness of the reaction layer. The addition of Nb would form a Nb-rich film in the reaction layer, which could reduce the solubility of oxygen in the interface, and suppress further diffusion of oxygen to the matrix. If the same content of Mn, Si, Y, or B alloying elements were added respectively to Ti-45Al-8Nb, the thickness of the interface reaction layer from large to small was as follows: Mn>Si>Y>B. The interface reaction thickness increased after 0.5at% Mn added, had no obvious change after 0.5at% Si addition, and decreased after adding 0.5at% Y or B. The introduced elements, which formed a protective film or/and promoted the formation of a dense aluminum oxide layer, would be of benefit to the resistance of interfacial reaction. 展开更多
关键词 high Nb containing Ti Al alloys investment casting interface reaction alloying
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Interface reaction of high-strength low-alloy steel with Al-43.4Zn-1.6Si(wt.%)metallic coating 认领 引用
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作者 Wang-jun Peng Guang-xin Wu +1 位作者 Yi Cheng Jie-yu Zhang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2019年第12期1304-1314,共11页
The microstructure,elemental distribution,phase composition,and thickness of intermetallic layers between high-strength low-alloy steel(H420)/mild carbon steel(DC51)and Al–43.4Zn–1.6Si(wt.%)(galvalume,GL)alloy were ... The microstructure,elemental distribution,phase composition,and thickness of intermetallic layers between high-strength low-alloy steel(H420)/mild carbon steel(DC51)and Al–43.4Zn–1.6Si(wt.%)(galvalume,GL)alloy were comparatively investigated.The experimental results reveal that the interfacial reaction layer was composed of Fe2Al5,Fe4Al13,and Al8Fe2Si intermetallic compounds.Moreover,the growth curves of the Fe2Al5 and Fe4Al13 intermetallic layers fit the parabolic law well,and the total thickness of the intermetallic layers of H420+GL was almost the same as that of DC51+GL.However,the thickness of the Fe2Al5 layer in H420+GL was thinner than that in DC51+GL.In addition,first-principle calculations were performed to explore the effect of Mn on the growth of the Fe2Al5 intermetallic phase,and the results indicate that Mn substitution in Fe2Al5 removes electronic charge from the Al atoms,thus decreasing the thickness of the Fe2Al5 interface layer. 展开更多
关键词 High-strength low-alloy steel Mild carbon steel Al–43.4Zn–1.6Si(wt.%)alloy Interface reaction
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SiC Formation Through Interface Reaction between C60 and Si in Plasma Environment 认领 引用
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作者 丁芳 孟亮 朱晓东 《Plasma Science and Technology》 SCIE EI CAS 2007年第1期67-70,共4页
The formation of SiC through the interface reaction between C60 and Si in a plasmaassisted chemical vapour deposition system （PACVD） is investigated with a C60 film previously deposited on Si wafers. The composition... The formation of SiC through the interface reaction between C60 and Si in a plasmaassisted chemical vapour deposition system （PACVD） is investigated with a C60 film previously deposited on Si wafers. The composition and structure of the deposited samples were characterized by micro-Raman spectroscopy and X-ray diffraction （XRD）. The results showed that SiC film was formed successfully in hydrogen plasma at a substrate temperature of 800℃ . The hydrogen atoms in plasma were found to enhance the production of SiC. Furthermore, the effects of the added CH4 on the formation of film were studied. Introduction of CH4 simultaneously with H2 at the beginning would suppress the formation of the initial layer of SiC due to a carbon-rich environment on the substrate, which would be disadvantageous to the further growth of the SiC film. 展开更多
关键词 SiC interface reaction C60 plasma
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Interface Reaction of Ta/NiFe and NiFe/Ta and the Dead Layer 认领 引用
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作者 HongchenZHAO GuanghuaYU HongSI 《Journal of Materials Science & Technology》 SCIE EI CAS 2004年第2期239-240,共2页
The structures of Ta/Ni81Fe19 and Ni81Fe19/Ta are commonly used in magnetoresistance multilayers. It is found that the thickness of dead layer in Ta/Ni81Fe19/Ta was about 1.6±0.2nm. X-ray photoelectron spectrosco... The structures of Ta/Ni81Fe19 and Ni81Fe19/Ta are commonly used in magnetoresistance multilayers. It is found that the thickness of dead layer in Ta/Ni81Fe19/Ta was about 1.6±0.2nm. X-ray photoelectron spectroscopy (XPS) was used to study the interfaces of Ta/Ni81Fe19 and Ni81Fe19/Ta. The results show that there is a reaction at the two interfaces: 2Ta+Ni=NiTa2, which caused the thinning of the effective NiFe layer. Furthermore, this reaction could also explain the phenomenon that the dead layer thickness of spin valves multilayers prepared by MBE is thinner than those prepared by magnetron sputtering. 展开更多
关键词 Interface reaction Dead layer X-ray photoelectron spectroscopy
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Formation mechanism of interface reaction layer between microporous magnesia refractories and molten steel and its effect on steel cleanliness 认领 引用 被引量：2
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作者 Wen-wen Zhang Wan Zheng +1 位作者 Wen Yan Guang-qiang Li 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2023年第9期1743-1754,共12页
The ceramic filter in continuous casting tundish can effectively improve the cleanliness of high-performance steel by regulating tundish flow field to promote the removal of inclusions and adsorbing or blocking fine i... The ceramic filter in continuous casting tundish can effectively improve the cleanliness of high-performance steel by regulating tundish flow field to promote the removal of inclusions and adsorbing or blocking fine inclusions in the molten steel into the mold.The interaction between microporous magnesia refractories used as tundish filter and molten interstitial-free(IF)steel at 1873 K was investigated to reveal the formation mechanism of their interface layer and its effect on steel cleanliness by laboratory research and thermodynamic calculations.The results show that the magnesium–aluminum spinel layer at the interface between the molten IF steel and the microporous magnesia refractories is formed mainly by the reaction of MgO in the refractory with the[Al]and[O]in the molten steel,significantly reducing the total O content,the size and amount of inclusions of the molten steel.In addition,the interparticle phases of microporous magnesia refractories at high temperature can adsorb Al2O3 and TiO2 inclusions in the molten steel into interparticle channels of the refractories to form high melting point spinel,impeding the further penetration of the molten steel.As a result,the consecutive interface layer of high melting point spinel between microporous magnesia refractories and molten steel can improve the cleanliness of the molten steel by adsorbing inclusions in the molten steel and avoid the direct dissolution of refractories of the tundish ceramic filter immersed in the molten steel,increasing their service life. 展开更多
关键词 Tundish metallurgy Microporous magnesia refractory Interstitial-free steel Formation mechanism Interface reaction layer Inclusion removal
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Inhibition Mechanism of the Interface Reaction in the Molten Pool of SiCp/Al Composites by Pulsed Laser Welding with Powder-Filling 认领 引用 被引量：1
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作者 Yan Shi Shupeng Wang Yongchao Jian 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2024年第6期615-627,共13页
In the welding process of SiCp/Al composites,Al reacts with SiC particles in the molten pool to form Al4C3,a brittle phase,damaging the reinforcement and causing a sharp decline in the mechanical properties of w... In the welding process of SiCp/Al composites,Al reacts with SiC particles in the molten pool to form Al4C3,a brittle phase,damaging the reinforcement and causing a sharp decline in the mechanical properties of weld joints.To mitigate this,a method of welding SiCp/Al composites by pulsed laser welding with powder-filling is proposed,inhibiting the interface reaction between Al and SiC particles in the molten pool.This study investigates the effect of pulse frequency on the temperature field of the molten pool,and combines thermal-fluid numerical simulation to analyze the peak temperature at different pulse frequencies,optimizing the Si content to ultimately inhibit the interface reaction in the molten pool.Results indicate that an appropriate pulse frequency achieves good welding formation and effectively regulates the peak temperature of the molten pool.Only a small amount of brittle phase is present in the weld joint,creating favorable conditions for the addition of alloying elements.The interface reaction is slowed down by adjusting the pulse frequency,though it is not completely inhibited.When the addition of Si content reaches 8%,the occurrence of the interface reaction is effectively inhibited.In weld joints with the addition of 8wt%Si powder,no Al4C3brittle phase is present,and the tensile strength of the weld joint is 266 MPa,up to 70%of the base material. 展开更多
关键词 Interface reaction SiCp/Al composites Pulsed laser welding with powder-filling Al4C3 brittle phase Numerical calculation
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Synthesis of Silver Sulf ide Quantum Dots Via the Liquid–Liquid Interface Reaction in a Rotating Packed Bed Reactor 认领 引用
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作者 Qing Liu Yuan Pu +2 位作者 Zhijian Zhao Jiexin Wang Dan Wang 《Transactions of Tianjin University》 EI CAS 2020年第4期273-282,共10页
We developed the high-gravity coupled liquid-liquid interface reaction technique on the basis of the rotating packed bed(RPB)reactor for the continuous and ultrafast synthesis of silver sulfide(Ag2S)quantum dots(QDs)w... We developed the high-gravity coupled liquid-liquid interface reaction technique on the basis of the rotating packed bed(RPB)reactor for the continuous and ultrafast synthesis of silver sulfide(Ag2S)quantum dots(QDs)with near-infrared(NIR)luminescence.The formation of Ag2S QDs occurs at the interface of microdroplets,and the average size of Ag2S QDs was 4.5 nm with a narrow size distribution.Ag2S QDs can disperse well in various organic solvents and exhibit NIR luminescence with a peak wavelength at 1270 nm under 980-nm laser excitation.The mechanism of the process intensification was revealed by both the computational fluid dynamics simulation and fluorescence imaging,and the mechanism is attributed to the small and uniform droplet formation in the RPB reactor.This study provides a novel approach for the continuous and ultrafast synthesis of NIR Ag2S QDs for potential scale-up. 展开更多
关键词 Ag2S quantum dots Near-infrared luminescence Rotating packed bed Liquid-liquid interface reaction Process intensification
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Interface reactions in film materials 认领 引用
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作者 Fengwu Zhu, Zhonghai Thai, and Guanghua YuMaterials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China 《Journal of University of Science and Technology Beijing》 2003年第5期1-8,共8页
Interface reaction (IR) is a frequently observed phenomenon in the study ofadvanced thin film materials. It is very important to study the reaction conditions at which IRhappens and then to suppress or make use of it,... Interface reaction (IR) is a frequently observed phenomenon in the study ofadvanced thin film materials. It is very important to study the reaction conditions at which IRhappens and then to suppress or make use of it, the necessary conditions, including boththermodynamical and dynamical conditions of IR were discussed in detail. IRs in various systems,including oxide/silicon, oxide/metal, metal/metal, metal/semiconductor andsemiconductor/semiconductor, were reviewed. Methods to suppress and make use of IR were alsointroduced. 展开更多
关键词 interface reaction spin-valve multilayers gate dielectric
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In situ atomic-scale tracking of unusual interface reaction circulation and phase reversibility in(de)potassiated alloy-typed anode 认领 引用 被引量：1
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作者 Lin Su Ruining Fu +4 位作者 Shuangying Lei Yuchen Pan Chongyang Zhu Pengcheng Liu Feng Xu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第8期241-249,I0006,共9页
Alloy-typed anode materials,endowed innately with high theoretical specific capacity,hold great promise as an alternative to intercalation-typed counterparts for alkali-ion batteries.Despite tremendous efforts devoted... Alloy-typed anode materials,endowed innately with high theoretical specific capacity,hold great promise as an alternative to intercalation-typed counterparts for alkali-ion batteries.Despite tremendous efforts devoted to addressing drastic volume change and severe pulverization issues of such anodes,the underlying mechanisms involving dynamic phase evolutions and reaction kinetics have not yet been fully comprehended.Herein,taking antimony(Sb)anode as a representative paradigm,its microscopic operating mechanisms down to the atomic scale during live(de)potassiation cycling are systematically unraveled using in situ transmission electron microscopy.Highly reversible phase transformations at single-particle level,that are Sb←→KSb2←→KSb←→K_5Sb4←→K3Sb,were revealed during cycling.Meanwhile,multiple phase interfaces associated with different reaction kinetics coexisted and this phenomenon was properly elucidated in the context of density functional theory calculations.Impressively,previously unexplored unidirectional circulation of reaction interfaces within individual Sb particle is confirmed for both potassiation and depotassiation.Based on the empirical results,the surface diffusion-mediated potassiation-depotassiation pathways at single-particle level are suggested.This work affords new insights into energy storage mechanisms of Sb anode and valuable guidance for targeted optimization of alloy-typed anodes(not limited to Sb)toward advanced potassium-ion batteries. 展开更多
关键词 Alloy-typed anode Potassium storage mechanism In situ transmission electron microscopy Reaction interface
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Unraveling charge effects on interface reactions and dendrite growth in lithium metal anode 认领 引用
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作者 Genming Lai Yunxing Zuo +5 位作者 Chi Fang Zongji Huang Taowen Chen Qinghua Liu Suihan Cui Jiaxin Zheng 《npj Computational Materials》 SCIE EI CSCD 2025年第1期1321-1330,共10页
Li metal is acknowledged as an ultimate anode material for high-specific-energy batteries,although its safety and practical cyclability heavily depend on the mysterious interface between Li metal and liquid electrolyt... Li metal is acknowledged as an ultimate anode material for high-specific-energy batteries,although its safety and practical cyclability heavily depend on the mysterious interface between Li metal and liquid electrolyte(LLI).However,there are substantial gaps in understanding the multiple intertwined chemical and electrochemical processes occurring on the LLI.Here,we unprecedentedly present the disentangled analyses of these processes and correlate them with Li dendrite growth by multi-scale simulation techniques combining machine-learning-driven molecular dynamics and phase-field modeling.Our simulations demonstrate a close relationship between Li dendrite growth and the interface reactions,which can be attributed to the charge transfer process.We further reveal that the behaviors of bond cleavages can be regulated by varying charge distribution at the interface.We propose that the charge transfer kinetics,revealed by the newly developed formulism of machine learning potential incorporating charge information,can act as a descriptor to explain the driving forces behind these behaviors on the LLI.This work enables new opportunities to fundamentally understand the intertwined processes occurring on the LLI and provide crucial new insights into the electrode-electrolyte interface design for next-generation high-specific-energy batteries. 展开更多
关键词 lithium metal anode li metal liquid electrolyte lli howeverthere interface reactions anode material chemical electrochemical processes disentangled analyses processes li dendrite
Effects of Pt diffusion barrier layer on the interface reaction and electric properties of PZT film/Si (111) sample 认领 引用 被引量：1
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作者 朱永法 阎培渝 +2 位作者 易涛 曹立礼 李龙土 《Chinese Journal of Chemistry》 SCIE CAS 2000年第3期328-334,共7页
The effects of the Pt diffusion barrier layer on the interface diffusion and reaction, crystallization, dielectric and ferroelectric properties of the PZT/Si(111) sample have been studied using XPS, AES and XRD techni... The effects of the Pt diffusion barrier layer on the interface diffusion and reaction, crystallization, dielectric and ferroelectric properties of the PZT/Si(111) sample have been studied using XPS, AES and XRD techniques. The results indicate that the Pt diffusion barrier layer between the PZT layer and the Si substrate prohibits the formation of TiCx, TiSix and SiO2 species in the PZT layer. The Pt barrier layer also completly interrupts the diffusion of Si from the Si substrate into the PZT layer and impedes the diffusion of oxygen from air to the Si substrate greatly. Although the Pt layer can not prevent completely the diffusion and reaction between oxygen and silicon, it can prevent the formation of a stable SiO2 interface layer on the interface of PZT/Si. The Pt layer reacts with silicon to form PtSix species on the interface of Pt/Si, which can intensify the chemical binding strength between the Pt layer and the Si substrate. To play a good role as a diffusion barrier layer, the Pt barrier layer must be not thinner than 140 nm. The existence of the Pt layer not only promotes the crystallization of PZT layer to form a perovskite phase but also improves dielectric and ferroelectric performances of the PZT layer. 展开更多
关键词 PZT interface reaction Pt diffusion barrier XPS AES
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