在钕铁硼(NdFeB)稀土材料表面直接进行水溶液电镀时,存在镀层分层、易起泡等缺陷.采用AlCl3/EMIC(1-甲基-3-乙基氯化咪唑)室温熔盐电解质在NdFeB永磁材料表面电镀铝,是提高其表面防护质量的有效方法.探讨了NdFeB永磁材料在室温熔盐中电镀铝的可行性、熔盐配比和芳香化合物对电镀铝层组织形态的影响,同时对镀层形成的机理进行了初步探讨.研究表明:采用AlCl3/EMIC室温熔盐电解质可在NdFeB永磁材料表面获得满意的铝镀层;铝镀层纯度很高,较完整平滑;添加芳香化合物可以大大提高镀层的质量,使晶粒细小、致密.
参考文献
| [1] | 杨遇春.稀土漫谈[M].北京:化学工业出版社,1999:94-96. |
| [2] | 任广军,王颖,陈素明.烧结型钕铁硼电镀镍工艺[J].材料保护,2002(03):41-43. |
| [3] | 贺琦军,李卫,潘伟.钕铁硼永磁体镀锌工艺[J].材料保护,2002(07):22-23. |
| [4] | Galova M.Electrodeposition of Aluminium from Organic Aprotic Solvents[J].Surface and Coatings Technology,1980(11):358-362. |
| [5] | Anton M .Electrodeposition of Aluminium,Aluminium/Magnesium Alloys and Maguesium from Organometallic Electrolytes[J].Journal of the Electrochemical Society,1984,1 379:2806-2808. |
| [6] | Chao C Y .Electrodeposition of Aluminum in Molten A1Cl3- n - Butylpyridinium Chloride Electrolyte[J].Materials Chemistry and Physics,1994,37:355-361. |
| [7] | Yasushi K;Satomi D;Takashi M et al.Electrochemical Behavior of Silver in 1-Ethyl-3-Methylimidazolium Tetralluoroborate Molten Salt[J].Journal of the Electrochemical Society,2001,148(02):C102-C105. |
| [8] | Takahashki S;Louisc M;Saboung .Dynamics of Room Temperature Melts:Nuclear Magnetic Resonance Measurements of Dialkylimidazolium Haloaluminates[J].Chemical Society Faraday Transactions,1993,89(19):3591-3595. |
| [9] | Carlin R T;Osteryoung R A .Dialkylimidazolium Chloroaluminate Melts[J].Journal of the Electrochemical Society,1989,118:455. |
| [10] | Marcus P;Teasier A;Oudar J .Electrodeposition of Aluminum from the Room Temperature Molten Salt[J].Surface Science,1989,129:432. |
| [11] | Jae J L;Daniel A;Scherson et al.Wheeler Underpotential Deposition of Aluminum and Alloy Formation on Polycrystalline Gold Electrodes from AlCl3/EMIC Room-Temperature Molten Salts[J].Journal of the Electrochemical Society,2000,147(02):562-566. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%