Factors Affecting the Squareness of Hysteresis Loops of Sintered NdFeB Magnets  

作　　者：王占勇 王现英 金鸣林 

机构地区：[1]Department of Materials Engineering, Shanghai Institute of Technology

出　　处：《Journal of Rare Earths》2007年第S2期109-112,共4页稀土学报（英文版）

基　　金：Project supported by Shanghai Leading Academic Discipline (P1502)

摘　　要：Investigation into the magnets with different squareness of hysteresis loop(SHL) reveals that the microstructure of sintered NdFeB magnets has great effects on the SHL of the magnets. The abnormal grain growth deteriorates the SHL seriously. The shape of the grain and the grain boundary affect the intensity of demagnetization field, and consequently on the SHL. The added elements have effects on the phase structures and distributions in the magnets, which influences the uniform of demagnetization field.Investigation into the magnets with different squareness of hysteresis loop(SHL) reveals that the microstructure of sintered NdFeB magnets has great effects on the SHL of the magnets. The abnormal grain growth deteriorates the SHL seriously. The shape of the grain and the grain boundary affect the intensity of demagnetization field, and consequently on the SHL. The added elements have effects on the phase structures and distributions in the magnets, which influences the uniform of demagnetization field.

关 键 词：NDFEB squareness of hysteresis loop abnormal grain growth magnetizing reversal 

分 类 号：TF124.5[冶金工程—粉末冶金]