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用XRD残余应力测试仪、纳米压痕仪、扫描电镜、X射线衍射和T-11磨损试验机等方法研究了不同的热处理温度对高速电弧喷涂7Cr13涂层的残余应力分布、弹性模量、微观组织和耐磨性能的影响。结果表明,适当的热处理工艺能降低涂层的孔隙率;释放涂层的残余拉应力,当热处理的温度在225℃左右时,涂层由拉应力转变为压应力;涂层的弹性模量和热处理温度之间成正比关系。磨损试验结果表明,随着热处理温度的升高,涂层硬度逐渐增大,从而改善了涂层的耐磨性。
The residual stress distribution, elastic modulus and microstructure of 7Cr13 coating were studied by XRD, Nanoindenter, SEM, X-ray diffraction and T-11 wear tester. Effect of organization and wear resistance. The results show that proper heat treatment can reduce the porosity of the coating and release the residual tensile stress of the coating. When the heat treatment temperature is about 225 ℃, the coating changes from tensile stress to compressive stress. The elastic modulus of the coating Heat treatment temperature is proportional to the relationship between. The wear test results show that, with the heat treatment temperature increases, the coating hardness gradually increased, thereby improving the wear resistance of the coating.