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采用光学显微镜、电子扫描显微镜研究了超音速电弧喷涂铝涂层的显微组织结构及喷涂粒子状态 ;采用拉伸试验和硬度计测试了涂层的结合强度、硬度 .采用中性盐雾试验对铝涂层的耐腐蚀性进行实验 ,结果表明超音速电弧喷涂铝涂层孔隙率低、组织致密 ,结合强度和硬度较高 ,耐腐蚀性能优越 .铝、Ac铝合金涂层的耐腐蚀性能几乎相同 .
The microstructure and spray particle state of supersonic arc sprayed aluminum coating were studied by optical microscope and scanning electron microscope.The bonding strength and hardness of the coating were tested by tensile test and hardness tester.The neutral salt spray test The results show that the supersonic arc spraying aluminum coating has low porosity, dense structure, high bonding strength and hardness, and excellent corrosion resistance. The corrosion resistance of aluminum and Ac aluminum alloy coating is almost the same .