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采用机械研磨对工业纯钛表面纳米化处理,利用等离子双辉进行纯钛表面渗镍。借助SEM、XRD分析处理后的表面形貌、晶粒大小,利用极化曲线以及阻抗谱分析处理后的表面抗腐蚀性能。利用极化曲线以及阻抗谱对处理后的表面进行抗腐蚀性能进行分析。结果表明经过机械研磨处理后的钛表面产生了一层纳米晶,双辉等离子渗镍后的钛表面均匀包覆了一层镍的涂层,试样在模拟海水环境中的抗腐蚀性能有了明显提升,较未处理试样,自腐蚀电位提升了0.35 V,自腐蚀电流密度降低了1.87 A·cm~(-2),极化电阻增加了29.4Ω·cm。
The surface of industrial pure titanium was treated by mechanical grinding, and the surface of pure titanium was infiltrated by plasma double brilliant. The SEM, XRD analysis of the surface morphology, grain size, the use of polarization curves and impedance spectroscopy analysis of the surface corrosion resistance. The corrosion resistance of the treated surface was analyzed by polarization curve and impedance spectroscopy. The results show that the surface of the titanium after mechanical grinding produces a layer of nanocrystal. The surface of the titanium after double-glow plasma nickel plating is evenly coated with a layer of nickel coating. The corrosion resistance of the sample in simulated seawater environment is Compared with the untreated sample, the self-corrosion potential increased by 0.35 V, the self-corrosion current density decreased by 1.87 A · cm -2, and the polarization resistance increased by 29.4 Ω · cm.