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加弧辉光离子渗镀技术将辉光放电与弧光放电有机地结合起来,利用辉光放电空心阴极效应使工件迅速升温,同时在真空容器壁上设置一个或多个金属阴极电弧靶源,利用真空电弧放电而不断地发射出高能量、高电流密度、高离化率的欲渗金属离子流,依靠扩散和离子轰击作用快速渗入工件表面层,在工件表面可以形成渗层、镀层、渗镀结合层。在实验条件下对镁合金AZ91表面渗镀了Ti,采用极化曲线测试和盐雾实验分析了处理后材料的腐蚀行为,用扫描电镜(SEM)分析了Ti镀膜的表面形貌,用电子衍射光谱(EDS)和辉光放电光谱仪(GDS)分析了表面化学成分分布。结果表明渗镀Ti显著提高了AZ91的耐腐蚀性。
Arc glow iontophoresis technology glow discharge and arc discharge organically combine, the use of glow discharge hollow cathode effect so that the workpiece rapidly warming at the same time in the vacuum vessel wall set one or more metal cathode arc target source, the use of Vacuum arc discharge and continue to emit high energy, high current density, high ionization rate ionizing metal ion flow, relying on diffusion and ion bombardment rapid infiltration of the workpiece surface layer, the surface can be formed in the infiltration layer, coating, infiltration Binding layer. Under the experimental conditions, the surface of AZ91 magnesium alloy was infiltrated with Ti. The corrosion behavior of the treated materials was analyzed by polarization curve test and salt spray test. The surface morphology of Ti coating was analyzed by scanning electron microscope (SEM) The surface chemical composition distribution was analyzed by spectroscopy (EDS) and glow discharge spectroscopy (GDS). The results show that Ti plating significantly improves the corrosion resistance of AZ91.