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.
出处
《塑料工业》
CAS
CSCD
北大核心
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)
关键词
钕铁硼
聚苯硫醚
黏结磁体
表面处理
抗氧化性
NdFeB
Polyphenylene Sulfide
Bonded NdFeB
Surface Treatment
Oxidation Resistance
