摘要
研究了电解质溶液中 ,NdFeB磁体 3个组成相 (Nd2 Fe14 B、Nd -rich和Nd1.1Fe4 B4 )的腐蚀电位、极化特性等电化学行为 .结果表明 :3个组成相在不同的腐蚀介质中表现出不同的腐蚀规律 ,组成相之间的电偶电池效应加速了NdFeB磁体的“相选择性腐蚀”
The NdFeB magnet is mainly composed of Nd 2Fe 14B,the main phase,Nd-rich phase and B-rich phase.In this paper,the electrochemical behaviors of these phases,such as the corrosion potential and the polarization specific property,are studied in different electrolytical solutions.It is shown that the corrosion mechanism of three phases in different corrosion media is different.The galvanic corrosion between the phases accelerates the phase-selective corrosion processing of the NdFeB magnet.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2002年第5期260-262,共3页
Corrosion Science and Protection Technology
基金
航空科学基金 ( 0 0G5 30 6 8)
航空高校自选课题 (98BX190 3)资助
关键词
NDFEB磁体
组成相
电化学腐蚀
NdFeB magnet,composition phases,electrochemical corrosion
