Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates
文献类型：期刊论文
| 作者 | C. B. Ma ; F. H. Cao ; Z. Zhang ; J. Q. Zhang |
| 刊名 | Applied Surface Science
 |
| 出版日期 | 2006 |
| 卷号 | 253期号:4页码:2251-2256 |
| 关键词 | Nd-Fe-B amorphous Ni-P electrodeposition potentiodynamic polatization EIS ndfeb magnets corrosion-resistance phosphorus incorporation surface-coatings alloys protection performance mechanism |
| ISSN号 | 0169-4332 |
| 中文摘要 | Decorative and protective Ni-P amorphous coatings were electroplated onto NdFeB permanent magnet from an ortho-phosphorous acid contained bath. The influences of the main electroplating technological parameters including current density, bath pH, bath temperature and H3PO3 on the structure and chemical composition of Ni-P coatings were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques in conjunction with X-ray diffraction (XRD), scanning transmission electron microscopy (SEM) and X-ray energy-dispersive spectrometry (EDX). The optimized amorphous Ni-P coated NdFeB can stand for ca. 180 h against neutral 3.0 wt.% NaCl salt spray without any pitting corrosion. Meanwhile, the results also showed that large phosphorous content is the precondition for Ni-P coatings to possess the amorphous structure, but too much high phosphorous content can damage the amorphous structure due to the separation of superfluous P from Ni2P/Ni3P and the resultant formation of multi-phase coatings (such as Ni2P-P). (c) 2006 Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34390]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. B. Ma,F. H. Cao,Z. Zhang,et al. Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates[J]. Applied Surface Science,2006,253(4):2251-2256. |
| APA | C. B. Ma,F. H. Cao,Z. Zhang,&J. Q. Zhang.(2006).Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates.Applied Surface Science,253(4),2251-2256. |
| MLA | C. B. Ma,et al."Electrodeposition of amorphous Ni-P coatings onto Nd-Fe-B permanent magnet substrates".Applied Surface Science 253.4(2006):2251-2256. |
入库方式： OAI收割
来源：金属研究所
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