A Comparative study for wear resistant of Stellite 6 coatings on nickel alloy substrate produced by laser cladding, HVOF and plasma spraying techniques
A Comparative study for wear resistant of Stellite 6 coatings on nickel alloy substrate produced by laser cladding, HVOF and plasma spraying techniques
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激光熔覆、HVOF和等离子喷涂镍合金基体Stellite 6涂层耐磨性对比研究
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发表时间：
2014
期刊：
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通讯作者：
Huijun Li
中科院分区：
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作者：
Alain Kusmoko;D. Dunne;Huijun Li
采用激光熔覆、高速氧燃料（HVOF）热喷涂和等离子喷涂技术在镍合金基体上制备了钨铬钴合金6涂层。利用表面轮廓仪、光学显微镜（OM）和扫描电镜（SEM）对涂层的表面粗糙度、化学成分和微观结构进行了表征。测量了涂层的显微硬度，并在板钉（往复）摩擦计的控制测试条件下检测了涂层的磨损行为。结果表明，在高镍钢基体上可形成致密无裂纹的激光熔覆Stellite 6涂层。涂层基体的平均显微硬度值在350-520 HV之间，销对板（往复）磨损试验表明，与其他两种涂层相比，激光熔覆涂层具有最高的耐磨性。
Stellite 6 coatings were deposited using laser cladding, high velocity oxygen fuel (HVOF) thermal spraying and plasma spraying techniques on a nickel alloy substrate. The surface roughness, chemical composition and microstructure of these coatings were characterised by a surface profilometer, optical microscopy (OM) and scanning electron microscopy (SEM). The microhardness of the coatings was measured and the wear behaviour of the coatings was examined under controlled test conditions in a pin-on-plate (reciprocating) tribometer. The results showed that fully dense and crack-free laser clad Stellite 6 coatings can be formed on a high nickel steel substrate. Average microhardness values of the matrix for the coatings were in the range 350-520 HV and the pin-on-plate (reciprocating) wear tests showed the laser cladding coating performed the highest wear resistance compared to the other two coatings.