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杨胶溪 胡星 王艳芳
材料工程, 2016, Volume: 44, Issue: 7Journal Article
为解决常规方法制备TC轴承带来的磨损不均问题,提高TC轴承服役寿命,采用激光增材制造方法在钢制零件基体表面制备耐磨涂层。选用两套不同工艺参数分别在TC轴承内轴套外圆、外轴套内孔进行Cr3C2/Fe基耐磨材料的激光熔覆,获得了无气孔、裂纹且冶金质量优良的耐磨涂层。采用扫描电镜(SEM)、能谱仪(EDS)、X射线衍射(XRD)检测分析手段进行形貌观察、成分分析、物相表征,并使用数字显微硬度计、摩擦磨损试验机、盐雾腐蚀实验箱分别对熔覆层进行硬度、耐磨性和耐腐蚀性进行测试。结果表明:TC轴承耐磨涂层的平均显微硬度为HV700,耐磨性为Ni60涂层的3倍,耐腐蚀性接近于316L不锈钢。
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