Wear and heat shock resistance of Ni-WC coating on mould copper plate fabricated by laser

被引：101
|
作者：
Liu, Yu [1 ,2 ]
Xu, Tianhao [1 ]
Liu, Ying [1 ]
Gao, Yali [1 ]
Di, Chi [1 ]
机构：
[1] Northeast Elect Power Univ, Sch Mech Engn, 169 Changchun Rd, Jilin 132012, Jilin, Peoples R China
[2] Nanchang Inst Technol, 901 Yingxiong Rd, Nanchang 330044, Jiangxi, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2020年 / 9卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Laser cladding; Mould copper; Wear resistance; Heat shock resistance; Microstructure; COMPOSITE COATINGS; MICROSTRUCTURE; CLADDINGS; POWDER; CO;
D O I：
10.1016/j.jmrt.2020.05.083
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Ni-WC coating was fabricated successively on a copper substrate by laser. The microstructure, hardness and wear resistance were investigated. The thickness of Ni-WC coating was 0.65 mm and average hardness of strengthening layer was 667HV(0.1), which was approximately 7.8 times higher than the hardness of copper substrate. The wear volume of Ni-WC coating was only 0.014 mm(3), which was only 1.02% wear volume of copper substrate. The decrease in wear volume was mainly due to presence of reinforced phases, such as gamma-Ni, Cr0.19Fe0.7Ni0.11, M7C3, M23C6 and WC. In addition, there was no coating peeled off after 100 times trials of heat shock resistance experiment at 800 degrees C. The experimental results show that this Ni-WC coating has a good metallurgical bonding strength and hardness, and it also has good wear resistance and high temperature property, which is helpful to improve the service life of mould copper plate. (C) 2020 The Authors. Published by Elsevier B.V.
引用
收藏
页码：8283 / 8288
页数：6
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