典型文献
Effects of Pr-Cu-Ti intergranular addition on microstructure and magnetic properties of heavy-rare-earth-free Nd-Fe-B sintered magnets
文献摘要：
By intergranular addition of Pr-Cu-Ti alloy powders in the Nd-Fe-B sintered magnets with the normal B component,we propose an approach to the optimization of grain boundary and local Nd-Fe-B compo-sition system.The coercivity is enhanced from 1.42 to 1.86 T,while further addition leads to a reduction in remanence and coercivity.The analyses of phase composition reveal that Ti mainly exists in the form of metallic Ti alloy,and part of Ti combines with B to form the TiB2 phase after the liquid phase sintering process.This process results in a consumption of B in the local Nd-Fe-B composition system and a change of the grain boundary component,which contributes to the formation process of the RE6(Fe,M)14 phase after the annealing process.Therefore,with the modification of grain boundary and composition system,the intergranular addition of Pr-Cu-Ti induces the generation of continuous thin grain boundary phases.It promotes the intergrain exchange decoupling,increasing the coercivity in the annealed magnet.While the excess addition results in the segregation of TiB2,as well as the precipitation of TiB2 into the Nd-Fe-B phase,which leads to structural defects.Thus,the further effort for the addition alloy with Ti to reduce the deterioration of the microstructure will lead to further improvement in magnetic properties.
文献关键词：
中图分类号：
作者姓名：
Jinhao Zhu;Guangfei Ding;Bo Zheng;Haichen Wu;Lei Jin;Zhehuan Jin;Shuai Guo;Renjie Chen;Aru Yan
作者机构：
CAS Key Laboratory of Magnetic Materials and Devices,and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China;University of Chinese Academy of Sciences,Beijing 100049,China;Analytical Center,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China
文献出处：
引用格式：
[1]Jinhao Zhu;Guangfei Ding;Bo Zheng;Haichen Wu;Lei Jin;Zhehuan Jin;Shuai Guo;Renjie Chen;Aru Yan-.Effects of Pr-Cu-Ti intergranular addition on microstructure and magnetic properties of heavy-rare-earth-free Nd-Fe-B sintered magnets)[J].稀土学报（英文版）,2022(05):778-783
A类：
RE6,intergrain
B类：
Effects,Pr,intergranular,addition,microstructure,magnetic,properties,heavy,rare,earth,free,Nd,sintered,magnets,By,alloy,powders,normal,component,propose,approach,optimization,boundary,local,system,coercivity,enhanced,from,while,further,leads,reduction,remanence,analyses,composition,reveal,that,mainly,exists,metallic,part,combines,TiB2,after,liquid,sintering,process,This,results,consumption,which,contributes,formation,annealing,Therefore,modification,induces,generation,continuous,thin,phases,It,promotes,exchange,decoupling,increasing,annealed,While,excess,segregation,well,precipitation,into,structural,defects,Thus,effort,reduce,deterioration,will,improvement
AB值：
0.430804
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