(Ce_(20)Nd_(80))_(31)Fe_(bal)B_1M磁体腐蚀产物多样性的研究  

Study on the diversity of corrosion products of (Ce_(20)Nd_(80))_(31)Fe_(bal)B_1M magnet

作　　者：吴亚萍[1] 朱明刚[1] 石晓宁[1] 宋利伟[1] 潘伟[1] WU Ya-ping ZHU Ming-gang SHI Xiao-ning SONG Li-wei PAN Wei(Functional Materials Research Institute, Central Iron and Steel Research Institute, B eijing 100081, China)

机构地区：[1]钢铁研究总院功能材料研究所,北京100081

出　　处：《粉末冶金工业》2017年第5期36-40,共5页Powder Metallurgy Industry

基　　金：国家自然科学基金资助项目(51571064)

摘　　要：对双主相粉末烧结工艺制备的(Ce_(20)Nd_(80))_(31)Fe_(bal)B_1M磁体进行高压加速腐蚀实验,观察其腐蚀形貌并进行EDS能谱分析。结果表明:腐蚀24 h后,腐蚀产物呈绒球状和圆球状。绒球状腐蚀产物主要是稀土相氧化物,随着腐蚀时间的增加,绒球状腐蚀产物演变为团絮状;圆球状腐蚀产物主要是铁的氧化物,随着腐蚀时间的延长,圆球状腐蚀产物部分脱落,没有脱落的被腐蚀颗粒缔结到基体上,一定程度上可以阻碍腐蚀的进一步进行。The （Ce_（20）Nd_（80））_（31）Fe_（bal）B_1M magnets prepared by double main phase powder sintering process were corroded in highly accelerated stress test system. The corrosion morphology was observed and analyzed by EDS energy spectrum. Results show that the corrosion products are bobbles-like and ball-like after corroded for 24 h. The bobbles-like product is mainly rare earth oxide,which evolves into flocculent with the increase of etching time. While the ball-like product is mainly iron oxide,which partially falls off with the increase of etching time,and the remaining corroded particles are concluded on the substrate,preventing further corrosion to some extent.

关 键 词：双主相烧结 钕铁硼磁体 腐蚀形貌 

分 类 号：TF125.8[冶金工程—粉末冶金]