典型文献
Improvement of coercivity and thermal stability of Nd-Fe-B sintered magnets by intergranular addition of Tb80Fe20 alloy
文献摘要：
To improve the coercivity and temperature stability of Nd-Fe-B sintered magnets for high-temperature applications,the eutectic Tb80Fe20(wt％)alloy powders were added into the Nd-Fe-B sintered magnets by intergranular method to enhance the coercivity(Hcj)and thermal stability.The microstructure,magnetic properties and thermal stability of the Nd-Fe-B magnets with different Tb80Fe20 contents were studied.The experimental results demonstrate that the coercivity(Hcj)of the sintered Nd-Fe-B magnet is significantly enhanced from 14.12 to 27.78 kOe,and the remanence(Br)decreases not obviously by introducing 4 wt％Tb80Fe20 alloy.Meanwhile,the reversible temperature coefficients of coercivity(β)and remanence(α)of the Nd-Fe-B magnets are increased from-0.5634％/℃to-0.4506％/℃and-0.1276％/℃to-0.1199％/℃at 20-170℃,respectively.The Curie temperature(Tc)of the Nd-Fe-B magnet is slightly enhanced with the increase of Tb80Fe20 content.Moreover,the irreversible flux magnetic loss(hirr)is obviously reduced as Tb80Fe20 addition increases.Further analysis of the microstructure reveals that a modified microstructure,i.e.clear and continuous RE-rich grain boundary layer,is acquired in the sin-tered magnets by introducing Tb80Fe20 alloy.The associated mechanisms on improved coercivity and thermal stability were comprehensively researched.
文献关键词：
中图分类号：
作者姓名：
Ze Duan;Haicheng Xuan;Jincai Su;Jingwu Chen;Xiaofei Yi;Youhao Liu;Peide Han
作者机构：
College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;State Key Laboratory of Rare Earth Permanent Magnet Materials,Hefei 231500,China
文献出处：
引用格式：
[1]Ze Duan;Haicheng Xuan;Jincai Su;Jingwu Chen;Xiaofei Yi;Youhao Liu;Peide Han-.Improvement of coercivity and thermal stability of Nd-Fe-B sintered magnets by intergranular addition of Tb80Fe20 alloy)[J].稀土学报（英文版）,2022(12):1899-1904
A类：
Tb80Fe20,hirr
B类：
Improvement,coercivity,thermal,stability,Nd,sintered,magnets,by,intergranular,addition,alloy,To,temperature,high,applications,eutectic,wt,powders,were,added,into,method,Hcj,microstructure,magnetic,properties,different,contents,studied,experimental,results,demonstrate,that,significantly,enhanced,from,kOe,remanence,Br,decreases,not,obviously,introducing,Meanwhile,coefficients,are,increased,respectively,Curie,Tc,slightly,Moreover,irreversible,flux,loss,reduced,increases,Further,analysis,reveals,modified,clear,continuous,RE,rich,grain,boundary,layer,acquired,associated,mechanisms,improved,comprehensively,researched
AB值：
0.395333
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