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 type, amine borate type, and phosphate type inhibitors on the corrosion behavior of NdFeB permanent magnet in aqueous mediums were investigated using superposition test method. The morphology 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 type, 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 permanent magnet to a certain degree. In particular, di-undeeanoic acid had the most prominem inhibition action for the NdFeB permanent magnet, and its inhibition capability increased with increasing concentration.
参考文献
| [1] | 宋振纶,李卫.钕铁硼永磁材料表面防护技术：特点·应用·问题[J].磁性材料及器件,2008(01):1-6. |
| [2] | 沈昊宇,李勍,周小清,梁树勇.环保型水基切削液的研究现状及其在烧结钕铁硼磁体后加工中的应用[J].磁性材料及器件,2008(02):47-50. |
| [3] | 倪蓓,贾秋莲,张二水.乳化液防锈性能的研究[J].石油商技,2003(03):11-14. |
| [4] | Gurrappa L .Suitability of Nd-Fe-B permanent magnets for biomedical applications-A corrosion study[J].Journal of Alloys and Compounds,2002,339:241-247. |
| [5] | 姜力强,夏庆萍,郑精武,都周云.烧结钕铁硼腐蚀及防护研究现状[J].材料保护,2007(12):48-52. |
| [6] | Costa I;Oliveira M C I;DeMeb H G .The effect of the magnetic field on the corrosion behavior of Nd-Fe-B permanent magnet[J].Journal of Alloys and Compounds,2004,278:348-358. |
| [7] | 贺琦军,李卫.钕铁硼永磁材料防腐蚀研究发展[J].金属功能材料,2001(05):8-13. |
| [8] | 蒋海珍,陶德华,王彬.水溶性有机羧酸醇铵盐防锈剂的分子结构与性能关系的研究[J].润滑与密封,2005(02):72-74. |
| [9] | 李广宇,孟瑶,马先贵.脂肪酸对微乳化切削液防锈性能影响的研究[J].润滑与密封,2008(10):45-48. |
| [10] | 张天胜.缓蚀剂[M].北京:化学工业出版社,2003:116-145. |
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