Kinetic study of electroless cobalt deposition on WC particles

被引：17
作者：
Guo, L. [1 ]
Zhao, X. J. [1 ]
Xiao, L. R. [1 ,2 ]
Tang, C. R. [3 ]
Zhang, W. Y. [1 ]
Tu, X. X. [1 ]
Liu, X. Z. [1 ]
Nie, Y. C. [1 ]
机构：
[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China
[2] Cent S Univ, Key Lab Nonferrous Met Mat Sci & Engn, Minist Educ, Changsha 410083, Hunan, Peoples R China
[3] Jiangxi Jiangwu Cemented Carbide Co Ltd, Yichun 330600, Jiangxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 750卷
关键词：
Electroless plating; WC; Co; Deposition rate; Kinetic study; WC/CO-COMPOSITE POWDERS; MECHANICAL-PROPERTIES; TUNGSTEN CARBIDE; MAGNESIUM ALLOY; NI; NANOCOMPOSITES; REDUCTION; EVOLUTION;
D O I：
10.1016/j.jallcom.2018.04.064
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：
The cobalt coating with an average thickness of 15-20 nm was uniformly plated on the surface of ultra fine WC powders by electroless plating in the present work. The effects of electroless plating condition parameters on the deposition rate were studied. It was found that the deposition rate increased with the increase of CoSO4 center dot 7H(2)O content, pH value, complexing agent concentration, and bath temperature, while decreased with the increase of reducing agent (NaH2PO2. H2O) concentration. Furthermore, the cobalt deposition rate empirical equation and activation energy were determined. The results show that the activation energy (E-a) for the electroless cobalt on WC substrates is approximately 54.65 kJ/mol. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：774 / 780
页数：7
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