为了克服钕铁硼耐蚀性差、易锈蚀的缺点,冶金部包头稀土研究院承担了冶金部下达的“钕铁硼磁体表面防护技术研究”课题,研究出钕铁硼双层镍防护方法和镀锌及其低铬钝化两套防护工艺。镀层后的钕铁硼采用多种方法在不同介质环境中进行典型的加速腐蚀试验,结果表明,在保持敏铁硼磁性能 In order to overcome the poor corrosion resistance of neodymium iron boron, easy corrosion defects, metallurgy Baotou Rare Earth Institute assumed the Ministry of Metallurgical issued “NdFeB magnet surface protection technology” project, developed a dual-layer neodymium iron boron protective methods and plating Zinc and its low chromium passivation two sets of protection technology. After coating NdFeB using a variety of methods in different media environment typical accelerated corrosion test results show that in maintaining the sensitivity of iron boron magnetic properties