Effects of annealing temperature on the crystal structure and properties of electroless deposited Ni-W-Cr-P alloy coatings

被引：15
|
作者：
Zhang, Ling [2 ]
Jin, Yong [1 ]
Peng, Bo [1 ]
Zhang, Yifan [1 ]
Wang, Xuejuan [1 ]
Yang, Qingsong [1 ]
Yu, Jian [1 ]
机构：
[1] Sichuan Univ, Dept Mat Sci, Chengdu 610064, Peoples R China
[2] Changsha Univ Sci & Technol, Dept Chem & Environm Engn, Changsha 410076, Hunan, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2008年 / 255卷 / 05期
关键词：
Electroless deposition; Ni-W-Cr-P alloy coatings; Annealing temperature; Crystal structure; Microhardness; Corrosion resistance;
D O I：
10.1016/j.apsusc.2008.06.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Ni-W-Cr-P alloy coatings were prepared by electroless deposition. The effects of the annealing temperature on the crystal structure, microhardness, and corrosion resistance of these Ni-W-Cr-P alloy coatings were studied. The experimental results show that the crystal structure of these alloy coatings changes with the increase of annealing temperature. That is, as-deposited Ni-W-Cr-P alloy coatings possess amorphous structure, gradually begin to crystallize at 300 degrees C; Ni3P phase is completely formed at 500 degrees C, and Ni17-W3 and Cr-Fe phases were formed at 600 degrees C; Ni3P is completely decomposed into Ni, W, Cr, Fe alloy films at 700 degrees C; the alloy coatings mainly consisted of Ni17W3 and Ni-Cr-Fe phases at 800 degrees C. Annealing temperature dependence of the microhardness and corrosion resistance of the alloy coatings was also measured. These results show that the Ni-W-Cr-P alloy coatings annealed at 800 degrees C exhibit better microhardness and corrosion resistance than those of the alloy coatings with other annealing temperature. The related strengthening mechanisms in the electroless deposited Ni-W-Cr-P alloy coatings were also discussed. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：1686 / 1691
页数：6
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