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Synthesis,structure and physical properties of ternary Ce-based compound Ce3VAs5 认领 引用
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作者 B S Min L C Fu +11 位作者 X M Chen L C Shi H Y Zheng J Zhang J Song Z Deng J F Zhao L Duan C J Xiao J L Zhu X C Wang C Q Jin 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第5期565-571,共7页
A new Ce-based compound Ce3VAs5has been synthesized at high-pressure and high-temperature conditions.The physical properties were investigated through the crystal structure,magnetism,electrical transport,and spe... A new Ce-based compound Ce3VAs5has been synthesized at high-pressure and high-temperature conditions.The physical properties were investigated through the crystal structure,magnetism,electrical transport,and specific heat measurements.The compound crystallizes in a hexagonal Hf5Sn3Cu-anti-type structure with the space group of P63/mcm,which consists of face-sharing octahedral VAs6chains and zig-zag like Ce-chains along the c axis.It undergoes a ferromagnetic-like ordering at TN=14 K due to the Ce-lattice,and exhibits heavy fermion behavior with a Sommerfeld coefficient ofγ~128 mJ/(Ce-mol·K2).The Kondo temperature TK is determined to be~19 K.The deviation of paramagnetic susceptibility from Curie-Weiss law is related to the crystal electric field(CEF)effects,and the abnormal drop in the resistivity is attributed to the synergistic interaction between CEF effect and Kondo scattering.Due to its quasi one-dimensional structure,Ce3VAs5provides a good opportunity to study the anisotropy relative to Kondo effect in the future. 展开更多
关键词 heavy fermion Kondo effect Ce-based compound antiferromagnetism
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Constructing frustrated Lewis pairs on porous Ce-based metal-organic frameworks with improved dicyclopentadiene hydrogenation activity 认领 引用 被引量：1
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作者 Danfeng Zhao Jing Lin +4 位作者 Rushuo Li Liang Chu Zhaokun Wang Xiubing Huang Ge Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第7期619-625,共7页
The construction of frustrated Lewis acid-base pairs(FLPs)in porous systems is very important for the field of industrial hydrogenation catalysis,but there is still a great challenge.Based on the Ce3+/Ce4+redox ... The construction of frustrated Lewis acid-base pairs(FLPs)in porous systems is very important for the field of industrial hydrogenation catalysis,but there is still a great challenge.Based on the Ce3+/Ce4+redox pairs and abundant defects in porous Ce-based metal-organic frameworks(Ce-MOFs),FLP sites consisting of ligand-defective Ce sites(Lewis acid,LA)and neighboring terminal O sites(Lewis base,LB)were constructed in situ by a simple vacuum thermal activation method in lamellar Ce-UiO-66-F.Defects/oxygen vacancies in the Ce-MOFs structure result in the difference in the electron cloud density between Ce and O,which is suitable for H-H hetero-cleavage and H-transfer in the dicyclopentadiene(DCPD)hydrogenation process.Particularly,Ce-UiO-66-F-200 achieved 96.9%conversion of DCPD and 97.8%selectivity of 8,9-dihydrodicyclopentadiene(8,9-DHDCPD)at 100℃ under 2MPa H2 for 10 h,which is 9.4 times higher than 10.2%conversion of DCPD over the unactivated Ce-UiO-66-F.This research promotes the understanding of solid MOFs-based porous FLPs for H2 activation,and encourages the in-depth investigation of surface solid FLPs to the whole material FLPs. 展开更多
关键词 Ce-based metal−organic framework Frustrated Lewis pairs Hydrogen activation Thermocatalytic hydrogenation
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Microenvironment modulation around frustrated Lewis pairs in Ce-based metal-organic frameworks for efficient catalytic hydrogenation 认领 引用
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作者 Xinmeng Xu Zuoshuai Xi +6 位作者 Hongyi Gao Danfeng Zhao Zhiyuan Liu Tao Ban Jingjing Wang Shunzheng Zhao Ge Wang 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2025年第8期59-72,共14页
The development of solid frustrated Lewis pairs(FLPs)catalysts with porous structures is a promising strategy for advancing green hydrogenation technologies and has garnered significant attention.Leveraging the divers... The development of solid frustrated Lewis pairs(FLPs)catalysts with porous structures is a promising strategy for advancing green hydrogenation technologies and has garnered significant attention.Leveraging the diverse oxidation states and structural tunability of cerium-based metal-organic frameworks(Ce-MOFs),this study employed a competitive coordination strategy utilizing a single carboxylate functional group ligand to construct a series of MOF-808-X(X=-NH2,-OH,-Br,and-NO2)featuring rich solid-state FLPs for hydrogenation of unsaturated olefins.The-X functional group serves as a microenvironment,enhancing hydrogenation activity by modulating the electronic properties and acid-base characteristics of the FLP sites.The unique redox properties of elemental cerium facilitate the exposure of unsaturated Ce sites(Ce-CUS,Lewis acid(LA))and adjacent Ce-OH(Lewis base(LB))sites within the MOFs,generating abundant solid-state FLP(Ce-CUS/Ce-OH)sites.Experimental results demonstrate that Ce-CUS and Ce-OH interact with theσandσ*orbitals of H-H,and this"push-pull"synergy promotes heterolytic cleavage of the H-H bond.The lone pair electrons of the electron-donating functional group are transmitted through the molecular backbone to the LB site,thereby increasing its strength and reducing the activation energy required for H2heterolytic cleavage.Notably,at 100℃and 2 MPa H2,MOF-808-NH2achieves complete conversion of styrene and dicyclopentadiene,significantly outperforming MOF-808.Based on in-situ analysis and density functional theory calculations,a plausible reaction mechanism is proposed.This research enriches the theoretical framework for unsaturated olefin hydrogenation catalysts and contributes to the development of efficient catalytic systems. 展开更多
关键词 Frustrated Lewis pairs Microenvironment modulation Defect Ce-based metal-organic frameworks Catalyst Hydrogenation
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Ce-based catalysts used in advanced oxidation processes for organic wastewater treatment: A review 认领 引用 被引量：16
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作者 Lijun Niu Ting Wei +4 位作者 Qiangang Li Guangming Zhang Guang Xian Zeqing Long Zhijun Ren 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2020年第10期109-116,共8页
Refractory organic pollutants in water threaten human health and environmental safety,and advanced oxidation processes (AOPs) are effective for the degradation of these pollutants.Catalysts play vital role in AOPs,and... Refractory organic pollutants in water threaten human health and environmental safety,and advanced oxidation processes (AOPs) are effective for the degradation of these pollutants.Catalysts play vital role in AOPs,and Ce-based catalysts have exhibited excellent performance.Recently,the development and application of Ce-based catalysts in various AOPs have been reported.Our study conducts the first review in this rapid growing field.This paper clarifies the variety and properties of Ce-based catalysts.Their applications in different AOP systems (catalytic ozonation,photodegradation,Fenton-like reactions,sulfate radicalbased AOPs,and catalytic sonochemistry) are discussed.Different Ce-based catalysts suit different reaction systems and produce different active radicals.Finally,future research directions of Ce-based catalysts in AOP systems are suggested. 展开更多
关键词 Ce-based catalysts Water treatment Redox properties Oxygen vacancies Advanced oxidation processes
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Preparation of ultrafine Ce-based oxide nanoparticles and their catalytic performances for diesel soot combustion 认领 引用 被引量：11
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作者 韦岳长 赵震 +3 位作者 焦金庆 刘坚 段爱军 姜桂元 《Journal of Rare Earths》 SCIE EI CAS CSCD 2014年第2期124-130,共7页
The ultrafine Ce-based oxide nanoparticles with different element dopings （Zr, Y） were synthesized by the method of mi- cropores-diffused coprecipitation （MDC） using ammonia solution as the precipitation agent. Th... The ultrafine Ce-based oxide nanoparticles with different element dopings （Zr, Y） were synthesized by the method of mi- cropores-diffused coprecipitation （MDC） using ammonia solution as the precipitation agent. The activities of the catalysts for soot oxidation were evaluated by the temperature-programmed oxidation （TPO） reaction. Ce-based oxides prepared in this study exhibited high catalytic activity for soot oxidation under tile condition of loose contact between soot particles and catalysts, and the catalytic ac- tivity ofultrafine Ce0.gZr0 iO2 nanoparticle for soot combustion was the highest, whose/＂10, Ts0 and Sco2m was 364, 442 ~C and 98.3%, respectively. All catalysts were systematically characterized by means of X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, Brumauer-Emett-Teller （BET）, Fourier transform infrared spectroscopy （FT-IR） and UV-Vis diffuse reflectance spectroscopy （UV-Vis DRS）. It was indicated that the MDC method could prepare the ultrafine Ce-bascd oxide nanoparticles whose the crystal lattice were perfect, and the BET surface area and average crystal size of the ultrafine nanoparticles changed with the different element dopings （Zr, Y）. The H2-TPR measurements showed that the ultrafine Ce-based ox- ide nanoparticles with the doping-Zr cation could be favorable for improving the redox property of the catalysts. 展开更多
关键词 ultrafine nanoparticles Ce-based oxides catalysts soot combustion micropores-diffused coprecipitation rare earths
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Development of Ce-based sintered magnets: review and prospect 认领 引用 被引量：9
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作者 An-hua Li Long-long Xi +4 位作者 Hai-bo Feng Ning Zou Min Tan Ming-gang Zhu Wei Li 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2020年第1期1-11,共11页
Ce-based magnets have attracted extensive attention in both academia and industry due to their excellent property-price ratio and distinctive phase structures.Characteristically,Ce-based sintered magnets have widely t... Ce-based magnets have attracted extensive attention in both academia and industry due to their excellent property-price ratio and distinctive phase structures.Characteristically,Ce-based sintered magnets have widely tunable magnetic properties with changing Ce contents.Therefore,they can be used to meet many different application requirements from packaging market to driving motors,etc.The intrinsic magnetic properties,phase composition,and microstructures of the Ce-based sintered magnets with different Ce contents have been summarized.The service performances such as temperature stability,corrosion resistance,mechanical properties and thermal expansion of commercial Ce-based sintered magnets are introduced.The research and development trends of the Ce-based magnets in the future are pointed out. 展开更多
关键词 Ce-based sintered magnet Ce content Phase structure Magnetic property Service performance
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New Ce-based Metallic Plastics Developed in China 认领 引用
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《China Rare Earth Information》 2005年第11期3-3,共1页
关键词 Ce New Ce-based Metallic Plastics Developed in China
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Insights into mechanisms of activity promotion and SO2tolerance over NbyFezMnCeOxcatalyst with optimized Nb/Fe molar ratio for low-temperature NH3-SCR reaction 认领 引用
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作者 Zhian Gong Lulu Long +3 位作者 Jun Cao Shihong Tian Yadi Yang Xiaojiang Yao 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第4期1124-1134,I0005,共11页
SO2-induced MnCeOxcatalyst severe deactivation for low-temperature deNOxremains an intractable issue.In this study,the molar ratio of Nb/Fe was innovatively tuned to enhance the SO2tolerance of Nb and Fe c... SO2-induced MnCeOxcatalyst severe deactivation for low-temperature deNOxremains an intractable issue.In this study,the molar ratio of Nb/Fe was innovatively tuned to enhance the SO2tolerance of Nb and Fe co-doped MnCeOxcatalysts.The Nb7Fe3MnCeOxcatalyst shows optimal catalytic performance advantages,achieving over 90%nitrogen oxide conversion and outstanding N2selectivity within a broad activity temperature range(150-250℃),and also admirable SO2-tolerant performance at 250℃.Detailed experimental results indicate that the strong electron transfer among Fe,Ce and Mn species helps to induce the production of surface oxygen vacancy and accelerate redox cycling,and thus improves the catalytic performance at low temperatures.Moreover,in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS)experiments unveil the potential SO2tolerance mechanism of the Nb7Fe3MnCeOxcatalyst.Although the Langmuir-Hinshelwood pathway is somewhat constrained after sample sulfation,the Eley-Rideal pathway greatly facilitates the strongly adsorbed ammonia and NO molecules to undergo the selective catalytic reduction(SCR)reaction.The NO molecules are not required to be weakly adsorbed on the Nb7Fe3MnCeOxcatalyst surface as reactive nitrates,thereby relieving the negative effect of sulfation for NOxremoval. 展开更多
关键词 Environmental catalysis NH3-SCR reaction Ce-based catalysts Nb and Fe co-doping SO2tolerance Rare earths
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Effect of cerium distribution on Dy-containing grain boundary diffusion in high Ce-content sintered magnets 认领 引用 被引量：2
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作者 Yuhao Li Zhi Jia +8 位作者 Xiaodong Fan Xintong Yang Qing Li Jing Pan Shuai Cao Guangfei Ding Shuai Guo Renjie Chen Aru Yan 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第8期1677-1684,I0004,共8页
Obtaining high magnetic properties in high Ce-content magnets is essential to expand the widespread application of low-cost magnets.In this study,high Ce-content magnets with up to 45%Ce substitution for Nd were prepa... Obtaining high magnetic properties in high Ce-content magnets is essential to expand the widespread application of low-cost magnets.In this study,high Ce-content magnets with up to 45%Ce substitution for Nd were prepared by combining the single/dual/multi-main-phase processes with the Dy-containing grain boundary diffusion process(GBDP).The effects of base magnets with different Ce distributions on GBDP were systematically investigated.Magnetic properties and micro structure analysis reveal that high-performance multi-main-phase(MMP)diffused magnets with remanence(Br)up to 12.52 kGs,coercivity up to 16.08 kOe,and maximum magnetic energy product up to 36.44 MGOe are obtained,which is attributed to the regulation of Ce by the MMP process,and the optimization of microstructure by Gd-Cu alloy.Meanwhile,the diffusion efficiency is significantly improved because of Ce being restricted to the grain core,which promotes the formation of a continuous structure at the grain boundaries,and the formation of a continuous multilayer shell grain structure with high anisotropy field,while the Br of the diffused magnet is maintained.Besides,magnetic domain analysis shows that the MMP diffused magnet effectively suppresses the nucleation of demagnetized domains and enhances the pinning effect of domain walls.The study establishes an experimental foundation for the development of sintered high Ce-content magnets showcasing superior performance. 展开更多
关键词 Rare earths Ce-based magnets Microstructure High-performance Domain reversal
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Research progress on preparation of cerium-based oxide catalysts with specific morphology and their application for purification of diesel engine exhaust 认领 引用 被引量：10
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作者 Chunlei Zhang Siyu Gao +4 位作者 Di Yu Shengran Zhou Lanyi Wang Xuehua Yu Zhen Zhao 《Journal of Rare Earths》 SCIE EI CAS CSCD 2024年第7期1187-1216,I0001,共30页
The elimination of pollutants from diesel exhaust has received widespread research attention as they cause serious air pollution and pose a threat to human health.Catalytic post-treatment technology is one of the most... The elimination of pollutants from diesel exhaust has received widespread research attention as they cause serious air pollution and pose a threat to human health.Catalytic post-treatment technology is one of the most effective and universal technologies to treat diesel exhaust pollutants.The design and development of efficient and low-cost catalysts is the key factor to realize the wide application of catalytic post-treatment technology.Cerium(Ce)-based oxides with specific morphologies are widely used to eliminate pollutants in diesel vehicle exhaust due to their unique physical and chemical properties,such as high catalytic activity,low cost and non-toxicity.In this review,the preparation methods of Cebased oxide materials with specific morphologies,such as nanoparticles,nanocubes,nanorods,nanofibers,and multi-stage pores,are introduced in detail,and the research progress on using these catalysts for the removal of carbon monoxide,hydrocarbons,soot particles,nitrogen oxides,and other pollutants from diesel exhaust is reviewed in detail.Finally,the unresolved issues associated with using Ce-based oxide catalysts with a specific morphology to catalytically remove pollutants from diesel exhaust are highlighted,and future application prospects and development directions are discussed. 展开更多
关键词 Ce-based oxide catalysts Dies elexhaust pollutants Specific morphology Catalytic purification Rare earths
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Screening the optimal Cox/CeO2(110)(x=1–6)catalyst for methane activation in coalbed gas 认领 引用
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作者 Li’nan Huang Danyang Li +3 位作者 Lei Jiang Zhiqiang Li Dong Tian Kongzhai Li 《International Journal of Coal Science & Technology》 EI CAS CSCD 2024年第3期256-271,共16页
The challenges posed by energy and environmental issues have forced mankind to explore and utilize unconventional energy sources.It is imperative to convert the abundant coalbed gas(CBG)into high value-added products,... The challenges posed by energy and environmental issues have forced mankind to explore and utilize unconventional energy sources.It is imperative to convert the abundant coalbed gas(CBG)into high value-added products,i.e.,selective and efficient conversion of methane from CBG.Methane activation,known as the“holy grail”,poses a challenge to the design and development of catalysts.The structural complexity of the active metal on the carrier is of particular concern.In this work,we have studied the nucleation growth of small Co clusters(up to Co6)on the surface of CeO2(110)using density functional theory,from which a stable loaded Co/CeO2(110)structure was selected to investigate the methane activation mechanism.Despite the relatively small size of the selected Co clusters,the obtained Cox/CeO2(110)exhibits interesting properties.The optimized Co5/CeO2(110)structure was selected as the optimal structure to study the activation mechanism of methane due to its competitive electronic structure,adsorption energy and binding energy.The energy barriers for the stepwise dissociation of methane to form CH3*,CH2*,CH*,and C*radical fragments are 0.44,0.55,0.31,and 1.20 eV,respectively,indicating that CH*dissociative dehydrogenation is the rate-determining step for the system under investigation here.This fundamental study of metal-support interactions based on Co growth on the CeO2(110)surface contributes to the understanding of the essence of Co/CeO2catalysts with promising catalytic behavior.It provides theoretical guidance for better designing the optimal Co/CeO2catalyst for tailored catalytic reactions. 展开更多
关键词 Co cluster growth Ce-based catalysts Methane activation DFT
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Cerium-based nanomaterials for photo/electrocatalysis 认领 引用 被引量：14
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作者 Ge Li Ping Wang +3 位作者 Miao He Xilin Yuan Lulin Tang Zhenxing Li 《Science China Chemistry》 SCIE EI CAS CSCD 2023年第8期2204-2220,共17页
The localization and incomplete filling of 4f electrons endow cerium(Ce)with the great potential in electrocatalysis and photocatalysis.The unique 5d empty orbital of Ce elements can be used as a hydrogen“trap”site,... The localization and incomplete filling of 4f electrons endow cerium(Ce)with the great potential in electrocatalysis and photocatalysis.The unique 5d empty orbital of Ce elements can be used as a hydrogen“trap”site,which is conducive to the recombination of hydrogen ions or atoms and effectively promotes the desorption of hydrogen molecules in electrocatalysis.Meanwhile,due to the stable crystal structure,excellent oxygen mobility,and good optical properties,Ce-based nanomaterials are considered as one of the most desirable photocatalytic catalysts and widely used in atmospheric conditions.Therefore,cerium-based nanomaterials have considerable application prospects in photocatalysis and electrocatalysis.In this review,we summarize the preparation methods of Ce-based nanomaterials,and discuss the application of Ce-based nanomaterials in electrocatalysis and photocatalysis.Among them,electrocatalysis applications include the following:oxygen reduction reaction(ORR),hydrogen evolution reaction(HER),oxygen evolution reaction(OER),CO2 reduction reaction(CO2RR),and other electrocatalysis,and photocatalysis applications include HER,CO2RR,photodegradation,and other photocatalysis.Through the summary of present progress in the application of Ce-based nanomaterials in electrocatalytic and photocatalytic reaction,this review provides a reasonable prospect on the Ce-based nanomaterials in electrocatalysis and photocatalysis. 展开更多
关键词 Ce-based nanomaterials electrocatalysis photocatalysis oxygen reduction reaction hydrogen evolution reaction oxygen evolution reaction carbon dioxide reduction reaction
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C-176 loaded Ce DNase nanoparticles synergistically inhibit the cGAS-STING pathway for ischemic stroke treatment 认领 引用 被引量：14
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作者 Zhixin Zhu Haipeng Lu +7 位作者 Lulu Jin Yong Gao Zhefeng Qian Pan Lu Weijun Tong Pik Kwan Lo Zhengwei Mao Haifei Shi 《Bioactive Materials》 SCIE CSCD 2023年第11期230-240,共11页
The neuroinflammatory responses following ischemic stroke cause irreversible nerve cell death.Cell free-double strand DNA(dsDNA)segments from ischemic tissue debris are engulfed by microglia and sensed by their cyclic... The neuroinflammatory responses following ischemic stroke cause irreversible nerve cell death.Cell free-double strand DNA(dsDNA)segments from ischemic tissue debris are engulfed by microglia and sensed by their cyclic GMP-AMP synthase(cGAS),which triggers robust activation of the innate immune stimulator of interferon genes(STING)pathway and initiate the chronic inflammatory cascade.The decomposition of immunogenic dsDNA and inhibition of the innate immune STING are synergistic immunologic targets for ameliorating neuroinflammation.To combine the anti-inflammatory strategies of STING inhibition and dsDNA elimination,we constructed a DNase-mimetic artificial enzyme loaded with C-176.Nanoparticles are self-assembled by amphiphilic copolymers(P[CL35-b-(OEGMA20.7-co-NTAMA14.3)]),C-176,and Ce4+which is coordinated with nitrilotriacetic acid(NTA)group to form corresponding catalytic structures.Our work developed a new nano-drug that balances the cGAS-STING axis to enhance the therapeutic impact of stroke by combining the DNase-memetic Ce4+enzyme and STING inhibitor synergistically.In conclusion,it is a novel approach to modulating central nervus system(CNS)inflammatory signaling pathways and improving stroke prognosis. 展开更多
关键词 Ischemic stroke Ce-based nano-nuclease The cGAS-STING signaling pathway Anti-inflammation
A Review of Transition Metal Oxygen-Evolving Catalysts Decorated by Cerium-Based Materials:Current Status and Future Prospects 认领 引用 被引量：5
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作者 Yanyan Li Xinyu Zhang Zhiping Zheng 《CCS Chemistry》 CSCD 2022年第1期31-53,共23页
Non-noble metal catalysts are suitable for the oxygen evolution reaction(OER)owing to their original oxidation states and oxygen coordination environments,which can regulate the adsorption of OH−at the active sites to... Non-noble metal catalysts are suitable for the oxygen evolution reaction(OER)owing to their original oxidation states and oxygen coordination environments,which can regulate the adsorption of OH−at the active sites to facilitate the formation of oxygencontaining intermediates.However,the difficulties encountered in the conversion of intermediates(M–OH,M–O,and M–OOH)lead to low efficiency.Decorations of transition metal catalysts with foreign elements are regarded effective solutions,among which decoration with Ce-based materials(CeBM)is the most prominent.This review investigates the current status and future prospects of CeBM-decorated transition metal electrocatalysts.By presenting a thorough account of the latest development,we aim to set a common ground for the research community for a deeper understanding of the roles of CeBM that originate from its unique electronic structure and abundant oxygen vacancies.Moreover,we wish to provide our own perspectives as to how to further the design of Ce-based OER electrocatalysts and where such catalysts may be applied in fields beyond electrocatalysis. 展开更多
关键词 Ce-based materials transition metal oxygen-evolving catalysts oxygen evolution reaction oxygen-involved heterogeneous catalysis electrocatalyst
Isothermal crystallization in Ce70Ga_6Cu24 bulk metallic glass 认领 引用 被引量：1
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作者 JIANG WeiXin ZHANG Bo 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2014年第10期1870-1874,共5页
The isothermal crystallization behaviors in a newly developed CeGaCu bulk metallic glass have been investigated through the classic differential scanning calorimeter （DSC） method. It is found that the apparent activ... The isothermal crystallization behaviors in a newly developed CeGaCu bulk metallic glass have been investigated through the classic differential scanning calorimeter （DSC） method. It is found that the apparent activation energy （Ea） strongly depends on the fraction （x） of isothermal crystallization. Johnson-Mehl-Avrami （JMA） formula was used to analyze the mechanism of crystallization and the obtained Avrami exponent （n） was discovered to show an obvious correlation with the crystallization fraction x. With the help of the relation between Ea and n, the nucleation and growth activation energies, En and Eg, were estimated to be 214-304 kJ/mol and 91 kJ/mol, respectively. This result suggests that the main energy barrier against crystallization in the present glass should be the nucleation of nucleates, rather than the growth of crystals. Such a large E, is also believed to be responsible for the good glass forming ability of the CeGaCu alloy. 展开更多
关键词 Ce-based bulk metallic glass activation energy Avrami exponent nucleation and growth
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