典型文献
Effects of Nd-Ga intergranular addition on microstructure and magnetic properties of heavy-rare-earth-free Nd-Fe-B sintered magnets
文献摘要：
In this study,we propose an approach of grain boundary modification that can significantly increase the coercivity of the B-lean Nd-Fe-B sintered magnets by intergranular addition of Nd-Ga.The coercivity is substantially enhanced from 1.51 to 2.04 T through optimizing the microstructure and adjusting the phase composition for the grain boundary phase in the annealed magnets.The matrix grains are covered by a continuous thin grain boundary phase accompanying the formation of intermetallic Nd6Fet3Ga phases.The analysis of magnetic behaviors above Curie temperature confirms that the grain boundary phase of annealed Nd-Ga doped magnets appears to be non-ferromagnetic,facilitating the intergrain exchange decoupling.Microstructure observation in grain boundary area indicates that some surface of the matrix grain is dissolved in the formation process of the Nd6Fe13Ga phase.It gives rise to a decrease in the proportion of matrix grains and saturation magnetization of the magnet.The detailed relationship between magnetic properties and microstructure is discussed based on these results.
文献关键词：
中图分类号：
作者姓名：
Jinhao Zhu;Guangfei Ding;Lei Jin;Zhehuan Jin;Bo Zheng;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
文献出处：
引用格式：
[1]Jinhao Zhu;Guangfei Ding;Lei Jin;Zhehuan Jin;Bo Zheng;Shuai Guo;Renjie Chen;Aru Yan-.Effects of Nd-Ga 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(06):924-929
A类：
Nd6Fet3Ga,intergrain,Nd6Fe13Ga
B类：
Effects,intergranular,addition,microstructure,properties,heavy,rare,earth,free,sintered,magnets,In,this,study,propose,approach,boundary,modification,that,significantly,increase,coercivity,lean,by,substantially,enhanced,from,through,optimizing,adjusting,composition,annealed,matrix,grains,covered,continuous,thin,accompanying,formation,intermetallic,phases,analysis,behaviors,above,Curie,temperature,confirms,doped,appears,ferromagnetic,facilitating,exchange,decoupling,Microstructure,observation,area,indicates,some,surface,dissolved,process,It,gives,rise,decrease,proportion,saturation,magnetization,detailed,relationship,between,discussed,these,results
AB值：
0.486304
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