Fangyan Luo , Shanshan Wang , Wenqing Shi , Zhengye Xiong , Jiang Huang
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引用次数: 0
摘要
氧化石墨烯（Go）具有优异的机械性能、耐腐蚀性、固体润滑剂性能和无生物毒性。本研究通过激光熔覆（LC）技术在 Q235B 表面制备了添加 2 wt% 单层 Go 的 CoCrFeNiMn 涂层。为了探索 Go 作为增强粉末的可能性。研究发现，酒精搅拌法能使 Go 与 HEA 粉末均匀混合，且不会破坏其微观结构。涂层的主要相组成没有变化，但涂层中产生了氧化物和碳化物峰。涂层中碳化物和氧化物的生成通过 EDS 点扫描得到了证实。添加 Go 后，涂层的显微硬度提高了 51.33%。HEA/Go 涂层的平均摩擦系数 (COF) 降低了 16%，磨损率降低了 82.05%，磨损失重降低了 77.26%。磨损性能的改善主要归功于摩擦过程中氧化膜的生成。
Wear behavior of single-layer graphene oxide reinforced CoCrFeNiMn HEA coating by laser cladding
Graphene oxide (Go) has excellent mechanical properties, corrosion resistance, solid lubricant properties, and no biotoxicity. In this study, CoCrFeNiMn coating adding 2 wt% single layer of Go was prepared by laser cladding (LC) on the surface of Q235B. To explore the possibilities of Go as a reinforced powder. It was found that the alcohol stirring method could uniformly mix Go with HEA powder and would not destroy its microstructure. The main phase composition of the coatings does not change, but peaks of oxides and carbides were generated in the coatings. The carbide and oxide generation in the coating was demonstrated by EDS spot scanning. The addition of Go increased the microhardness of the coating by 51.33 %. The average coefficient of friction (COF) of the HEA/Go coating decreased by 16 %, the wear rate decreased by 82.05 %, and the wear weight loss decreased by 77.26 %. Improvement of the wear properties is mainly attributed to the generation of oxide film during friction.
期刊介绍：
This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys.
The journal reports the science and engineering of metallic materials in the following aspects:
Theories and experiments which address the relationship between property and structure in all length scales.
Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations.
Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties.
Technological applications resulting from the understanding of property-structure relationship in materials.
Novel and cutting-edge results warranting rapid communication.
The journal also publishes special issues on selected topics and overviews by invitation only.
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