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Xiaotian Yang, Xinhua Wang, Jun Zhou, Hengli Wei, Rong Zeng, and Wensheng Li, Effect of Cu addition on the microstructure and tribological performance of Ni60 directional structure coating, Int. J. Miner. Metall. Mater., 30(2023), No. 4, pp.715-723. https://doi.org/10.1007/s12613-022-2516-2
Xiaotian Yang, Xinhua Wang, Jun Zhou, Hengli Wei, Rong Zeng, and Wensheng Li, Effect of Cu addition on the microstructure and tribological performance of Ni60 directional structure coating, Int. J. Miner. Metall. Mater., 30(2023), No. 4, pp.715-723. https://doi.org/10.1007/s12613-022-2516-2
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Cu元素对Ni60定向结构涂层微观组织及摩擦学性能影响

摘要: 采用自主研发的定向结构涂层制备装置成功研制出定向结构Ni基合金高耐磨耐腐蚀涂层的基础上，为了赋予涂层减摩特性,使涂层具有减摩耐磨综合性能,本文将廉价的Cu元素引入涂层,采用火焰喷涂+感应重熔+强制冷却复合技术研制了定向结构Ni60/Cu复合涂层。研究了Cu对Ni60定向结构涂层微观组织、物相演变、硬度和磨损性能的影响。结果表明：Cu的添加使Ni基合金定向结构涂层的组织更加致密，Cu主要富集在晶粒内部，生成了稳定的Cu3.8Ni相，Cu元素的溶解、扩散和反应使涂层组织得到显著细化。Cu元素引入尽管使涂层的硬度得到降低，但赋予了涂层减摩耐磨综合性能，使涂层耐磨性能得到显著提高。Cu元素引入的Ni60定向结构涂层显示出窄而浅的光滑磨痕，其磨损率仅约为纯Ni60定向结构涂层的50.8%。

 

Effect of Cu addition on the microstructure and tribological performance of Ni60 directional structure coating

Abstract: The Ni60/15wt% Cu directional structure coating was prepared by the composite technology of flame spraying, induction remelting, and forced cooling, and the effect of Cu on the microstructure, phase, hardness, and wear performance of Ni60 coatings was investigated. Results showed that Cu addition makes the microstructure of Ni60 directional structure coating more compact, and Cu is mainly enriched within the crystal grain, resulting in the formation of Cu3.8Ni as the bonding phase. Compared with Ni60 directional structure coating, Ni60/Cu directional structure coating has a lower hardness, lower friction coefficient, and lower wear rate, which indicate that Cu can effectively enhance the antifriction performance of Ni60 directional structure coating.

 

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