Corrosion resistance of NdFeB magnets coated by Al
Publication in refereed journal

香港中文大學研究人員

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摘要Hot steam corrosion tests were performed on heat-treated Al coated NdFeB magnets. The results suggest that the corrosion process can be divided into different stages, Initially, Nd which diffuses across the Al coating from the Nd-rich grain boundaries of the magnet during annealing, reacts with the moisture forming either Nd oxide or hydroxide at the surface. Upon further corrosion, the brittle Al-Fe-Nd-O-B compounds are formed, and they appear as lumps of oxides or hydroxides of Nd and Fe on the coating layer. And finally, the whole coating is consumed due to corrosion, and the corrosion process proceeds into the magnet material forming mostly Fe oxide or hydroxides. Among various annealed coated magnets, the one which is heat treated at 500 degrees C for 10 mins has the highest corrosion resistance against the moist and salty environment.
著者Ku NC, Qin CD, Yu CC, Ng DHL
會議名稱1996 IEEE International Magnetics Conference (INTERMAG 96)
會議開始日09.04.1996
會議完結日12.04.1996
會議地點SEATTLE
期刊名稱IEEE Transactions on Magnetics
出版年份1996
月份9
日期1
卷號32
期次5
出版社IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
頁次4407 - 4409
國際標準期刊號0018-9464
電子國際標準期刊號1941-0069
語言英式英語
Web of Science 學科類別Engineering; Engineering, Electrical & Electronic; ENGINEERING, ELECTRICAL & ELECTRONIC; Physics; Physics, Applied; PHYSICS, APPLIED

上次更新時間 2021-28-02 於 01:27