聚合物粘结磁体用Nd-Fe-B微晶磁粉的氧化行为及防护

Oxidation and Antioxidation of the Nanocrystalline Powders of Nd Fe B

采用有机硅树脂、硅烷偶联剂和重铬酸盐处理快淬ＮｄＦｅＢ微晶磁粉表面，通过热氧化增重试验、湿热环境试验以及差示热分析法（ＤＴＡ）研究了上述磁粉的氧化行为和抗氧化效果。实验表明，上述方法能提高磁粉的抗氧化行为。

In this paper, Nd Fe B magnetic powders were treated by organosilicon resins and silane coupling agent and dichromate salts. Using temperature tests, high temperature and high humidity tests, and DTA, the antioxidation behavior were studied. The results show that antioxidation characteristics are improved remarkably.