摘要
涂层与基底之间的冶金结合性能直接影响对基底的保护质量。以内燃机用45Cr钢为基底,通过激光熔覆制得多层CoCrFeNiMn涂层,并加入SiC颗粒来提高涂层的综合性能。对涂层组织及耐磨性能开展试验测试,研究结果表明,多层涂层主要存在的物质形态为FCC型和M7C3产物,梯度熔覆制备涂层可以对合金组织发挥良好的调节效果,获得更高的结合强度,而单层涂层磨损结构与摩擦方向产生一致槽痕,双层和三层时表层结构促使M7C3颗粒更快脱落,产生更明显磨粒磨损,引入SiC颗粒可以有效减少磨损质量损耗。
The metallurgical bonding property between coating and substrate directly affects the protection quality of substrate.Multilayer CoCrFeNiMn coating was prepared by laser cladding on 45Cr steel for internal combustion engine,and SiC particles were added to improve the comprehensive properties of the coating.The microstructure and anti-friction properties of the coating were tested.The results showed that the main substance forms of the multilayer coating were FCC and M7C3 products.The coating prepared by gradient cladding can play a good adjustment effect on the alloy structure and obtain higher bonding strength.The wear structure of single-layer coating is consistent with the friction direction,and the surface structure of double-layer and triple-layer coating makes M7C3 particles fall off faster,resulting in more obvious wear particle wear.The introduction of SiC particles has higher resistance and reduces wear quality loss.
作者
苏超杰
Su Chaojie(School of Automotive Engineering,Henan Industry and Trade Vocational College,Zhengzhou Henan 450052,China)
出处
《山西冶金》
2025年第7期34-35,38,共3页
Shanxi Metallurgy
基金
河南省高等学校重点科研项目“激光熔覆技术在液压支架再制造中的应用”(22A470005)。
关键词
激光熔覆
高熵合金涂层
组织演变
摩擦磨损
laser cladding
high entropy alloy coating
organizational evolution
friction and wear
