NdFeB磁粉表面抗氧化处理的研究  

Surface Treatment on the Oxidation Resistance Property of NdFeB Powder

作　　者：代路[1] 侯康[1] 王波[1] 龙盛如[2] 王孝军[2] 杨杰[2,3] 

机构地区：[1]四川大学高分子科学与工程学院,四川成都610065 [2]四川大学材料科学技术研究所,四川成都610064 [3]四川大学高分子科学与工程国家重点实验室,四川成都610065

出　　处：《塑料工业》2009年第6期60-62,75,共4页China Plastics Industry

基　　金：十一五863资助项目(2007AA03Z561)

摘　　要：分别对NdFeB/PPS黏结磁体用的快淬NdFeB磁粉表面进行了无水磷酸化处理、钛酸酯处理、KH560处理以及无水磷酸化加KH560处理,研究了表面处理对磁粉抗氧化性能、表面形貌和晶态结构的影响。结果表明:四种表面处理工艺均能在磁粉表面形成防护层,并能有效地提高磁粉的抗氧化能力;无水磷酸化加KH560处理工艺对磁粉表面的包覆和抗氧化能力的提升效果最明显;表面处理没有改变磁粉本身结构。Rapidly quenching NdFeB powder for polyphenylene sulfide （PPS） Bonded NdFeB magnets was treated by the surface treatment of phosphate coating, titanate, silane coupling and phosphate coating and si- lane coupling agents. The oxidation resistance property, surface topography and crystal structure of the Nd- FeB powder were measured by thermal weightanalysis （ TGA）, scanning electronic microscopy （ SEM）, x-ray diffiraction（ XRD）, and X-ray photoelectron spectroscopy （XPS）. The results showed that all the treatments could create inoxidizing coating on the surface of NdFeB magnetic powder and improve their oxidation resist- ance property, especially the treatment of phosphate coating and silane coupling agent. The structure of the NdFeB powder was not changed during the surface treatments.

关 键 词：钕铁硼 聚苯硫醚 黏结磁体 表面处理 抗氧化性 

分 类 号：TQ326.56[化学工程—合成树脂塑料工业]