水溶性缓蚀剂对钕铁硼永磁材料的防腐蚀性能  

Effect of Several Water-Solubility Inhibitors on Corrosion Behavior of NdFeB Permanent Magnet

作　　者：李广宇[1] 孟瑶[1] 娄桂艳[2] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110168 [2]沈阳工业大学理学院,辽宁沈阳110023

出　　处：《材料保护》2009年第12期49-51,共3页Materials Protection

基　　金：辽宁省教育厅基金资助项目(2006B085)

摘　　要：采用叠片腐蚀试验方法评定了无机盐型、脂肪酸型、硼酸胺型和膦酸酯型等4类9种水溶性缓蚀剂在水性环境中对钕铁硼永磁材料防腐蚀性能的影响。通过扫描电子显微镜(SEM)和能量色散谱(EDS)观察了金属表面形态及元素分布。结果显示,无机盐型、硼酸胺型和膦酸酯型缓蚀剂对钕铁硼永磁材料均无明显的缓蚀作用,而脂肪酸型缓蚀剂对钕铁硼永磁材料有一定的缓蚀作用,其中以双十一酸(DC11)的防腐蚀效果最为突出,并且随着缓蚀剂浓度的增大,防腐蚀性能逐渐提高。The effects of nine kinds of water-soluble inhibitors including inorganic salt type,fatty acid Journal of Materials Protection type,amine borate type,and phosphate type inhibitors on the corrosion behavior of NdFeB permanent magnet in aqueous medi-ums were investigated using superposition test method.The mor-phology and elemental distribution of the metallic surfaces were analyzed by means of scanning electron microscopy and energy dispersive spectrometry.Results indicate that the inorganic salt tvpe,amine borate type,and phosphate type inhibitors have little inhibition action for NdFeB permanent magnet,while fatty acid type inhibitors are able to inhibit the corrosion of the NdFeB per manent magnet to a certain degree.In particular,diundecanoic acid had the most prominent inhibition action for the NdFeB per manent magnet,and its inhibition capability increased with in creasing concentration.

关 键 词：缓蚀剂 钕铁硼永磁材料 防腐蚀性能 

分 类 号：TG174.42[金属学及工艺—金属表面处理]