研究了电解质溶液中，NdFeB磁体3个组成相(Nd2Fe 14B、Nd-rich和Nd1.1Fe4B4)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”过程.
The NdFeB magnet is mainly composed of Nd2Fe14 B,the main phase,Nd-rich phase and B-rich phase.In this paper,the electrochemi cal behaviors of these phases,such as the corrosion potential and the polarizati on specific property,are studied in different electrolytical solutions.It is sho wn that the corrosion mechanism of three phases in different corrosion media is different.The galvanic corrosion between the phases accelerates the phase-select ive corrosion processing of the NdFeB magnet.
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