WC含量对定向结构Ni60涂层微观组织及其摩擦性能的影响

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (4): 17-23.

WC含量对定向结构Ni60涂层微观组织及其摩擦性能的影响

殷翔^*1, 马成燕¹, 周凯¹, 王新民¹, 王毅¹, 魏亨利²

1.甘肃建投兰州新区建设管理有限公司, 甘肃兰州 730087;
2.兰州理工大学材料科学与工程学院, 甘肃兰州 730050

收稿日期:2023-05-16 出版日期:2023-08-28 发布日期:2023-08-29
通讯作者: 殷翔(1974-),男,江苏镇江人,高级工程师. Email:714402911＠qq.com
基金资助:
甘肃省自然科学基金(20JR5RA471)

Effect of WC content on microstructure and fribological properties of directional Ni60 coating

YIN Xiang¹, MA Cheng-yan¹, ZHOU Kai¹, WANG Xin-min¹, WANG Yi¹, WEI Heng-li²

1. Gansu Construction Investment Lanzhou New Area Construction Management Co, Ltd., Lanzhou 730087, China;
2. College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2023-05-16 Online:2023-08-28 Published:2023-08-29

摘要/Abstract

摘要： 采用火焰喷涂和感应重熔+强制冷却复合技术在45钢基体上制备了Ni60/WC定向结构涂层,研究了不同WC质量分数(5%、20%、35%、50%)对定向结构涂层微观组织、硬度和摩擦磨损性能的影响.结果表明:随着WC质量分数的增加,定向结构涂层中靠近界面处的枝晶表现为合并择优生长的趋势;定向结构涂层内的各类硬质相填充于晶界,起到了强化晶界的作用.涂层的硬度随着WC质量分数增加呈现正相关上升趋势,涂层的摩擦系数与磨损率随着涂层中WC质量分数的增加先减小后增大.

关键词: Ni60合金, WC颗粒, 微观结构演变, 显微硬度, 摩擦磨损性能

Abstract: Ni60/WC directional coatings were prepared on 45 steel substrate by flame spraying and induction remelting + forced cooling. The effects of WC mass-fraction(5%, 20%, 35%, 50%) were investigated on microstructure, hardness and tribological properties of directional coatings. The results showed that the dendrites near the interface of the directional coating show a trend of combined preferential growth with the increase of WC mass-fraction. All kinds of hard phases in the directional coating are evenly distributed in the grain boundaries, which plays a role in strengthening the grain boundaries. The hardness of coating showed a positive correlation with the WC mass-fraction,and friction coefficient and wear rate of directional structure coating first decrease and then increase with the increase of WC mass-fraction.

Key words: Ni60 alloy, WC particles, microstructure evolution, microhardness, friction and wear property

中图分类号:

TG149

殷翔, 马成燕, 周凯, 王新民, 王毅, 魏亨利. WC含量对定向结构Ni60涂层微观组织及其摩擦性能的影响[J]. 兰州理工大学学报, 2023, 49(4): 17-23.

YIN Xiang, MA Cheng-yan, ZHOU Kai, WANG Xin-min, WANG Yi, WEI Heng-li. Effect of WC content on microstructure and fribological properties of directional Ni60 coating[J]. Journal of Lanzhou University of Technology, 2023, 49(4): 17-23.

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