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为研究搭接率对Inconel625涂层的耐磨耐腐蚀性能的影响，采用同轴送粉的方式在2205不锈钢基材上制备不同搭接率的Inconel625熔覆层。通过扫描电子显微镜(scanning electron microscope, SEM)、硬度测试和摩擦磨损试验，分析搭接率在30%、35%、40%、45%和50%时的熔覆层组织性能。研究结果表明，激光熔覆技术能够显著提高2205基体的硬度、耐磨性以及耐腐蚀性能，其中在搭接率为45%时熔覆层的硬度较基体提高了1.9倍，搭接率对熔覆层的摩擦系数影响不明显，搭接率为50%时摩擦损失质量最小为0.005 83 g,由于不同搭接率对涂层微观组织产生影响，使涂层产生气孔进而影响了熔覆层的耐腐蚀性能。
Abstract：In this paper, in order to study the effect of the overlap rate of Inconel625 coating on the wear resistance and corrosion resistance of the coating, the Inconel625 cladding layer with different overlap rate was prepared on the substrate of 2205 stainless steel by coaxial powder feeding. The effects of bonding rate of 30%, 35%, 40%, 45% and 50% on the microstructure properties of cladding layer were analyzed by scanning electron microscopy(SEM), hardness test and friction and wear test. The results show that the laser cladding technology can significantly improve the hardness, wear resistance and corrosion resistance of 2205 matrix. When the bonding rate is 45%, the hardness of the cladding layer is 1.9 times higher than that of the matrix. The bonding rate has no obvious effect on the friction coefficient of the cladding layer, and the minimum friction loss is 0.005 83 g when the bonding rate is 50%. Moreover, the different bonding rate affects the microstructure of the coating, resulting in porosity of the coating, which affects the corrosion resistance of the cladding layer.
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基本信息:
DOI：10.14128/j.cnki.al.20254511.031
中图分类号:TG174.4;TG665
引用信息:
[1]郭歆雨,孙文磊,管文虎,等.搭接率对激光熔覆Inconel625涂层耐磨损耐腐蚀性能的影响[J].应用激光,2025,45(11):31-38.DOI:10.14128/j.cnki.al.20254511.031.
基金信息:
机械装备关键零部件先进表面工程关键技术研发(2022B01036)