有机物包覆处理对粘结NdFeB性能的影响  

The Effect of the Surface Filmed by Organic Materials on the Properties of NdFeB Magnets

作　　者：史新伟[1] 黄金亮[1] 杨留栓[1] 

机构地区：[1]洛阳工学院材料工程系，河南 洛阳 471039

出　　处：《洛阳工学院学报》2000年第4期13-16,共4页Journal of Luoyang Institute of Technology

基　　金：河南省自然科学基金资助项目(004041300)

摘　　要：对快淬NdFeB磁粉表面进行有机硅烷 (KH550 )包覆处理 ,研究了包覆处理对快淬NdFeB磁粉抗氧化性的影响 ,并初步研究了包覆处理对快淬NdFeB粘结磁体的密度 ,抗压强度及磁性能的影响规律 ,利用SEM观察了磁粉表面状态及磁体的断口形貌。结果表明 :有机硅烷 (KH550 )包覆处理可明显提高磁粉的抗氧化性 ,而相应粘结磁体的密度 。The rapidly quenched NdFeB magnetic powders are surface filmed by the organic material silicohydride(KH550).The oxidation behaviors of the NdFeB magnetic powders are systematically studied.The influences of the surface filming of the magnetic powders on the density,compressive strength and magnetic properties of the bonded NdFeB magnets are preliminarily investigated.The surface of the magnetic powders and the compressive fracture of the bonded magnets are observed by SEM.The results have shown that the oxidation behaviors of the magnetic powders are greatly improved by the surface filmed by silicohydride(KH550),at the same time,the density,compressive strength and the magnetic properties of the bonded magnets are enhanced or improved to certain extent.

关 键 词：快淬NDFEB 抗氧化性 抗压强度 磁性能 稀土永磁材料 有机物包覆处理 

分 类 号：TM273.051[一般工业技术—材料科学与工程]