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利用自制多功能微弧氧化(MAO)电源对处在胶体中的工业纯钛表面进行了MAO处理,比较系统地研究了电压脉冲的峰值(U)和占空比(d)对膜层的生长特性、微观结构、相结构和处理后试样耐腐蚀性能的影响.结果表明,随着U的增加或d的加大,膜厚几乎呈线性增加,膜表面微孔尺寸和粗糙度逐渐增大,微孔密度逐渐减小.膜层主要由致密层组成,除U=450V,d=10%时制备试样的膜层中含有少量锐钛矿相TiO2外,其他试样的膜层全由金红石相TiO2组成;在30%硫酸溶液中的耐腐蚀测试表明,MAO处理后试样的耐腐蚀性能与U和d密切相关,随着U的增加或d的加大,试样的耐腐蚀能力逐渐增强.
MAO was applied to the surface of industrial pure titanium in colloids by self-made multi-functional micro-arc oxidation (MAO) power source. The effects of voltage pulse peak (U) and duty cycle (d) The results show that the film thickness increases almost linearly with the increase of U or d, and the pore size and roughness of the surface of the film increase gradually , The density of micropore decreases gradually.The film consists mainly of dense layer except U = 450V, when d = 10%, the film of sample prepared contains a small amount of anatase TiO2, The corrosion resistance of 30% sulfuric acid solution showed that the corrosion resistance of MAO treated samples was closely related to U and d, with the increase of U or d, the corrosion resistance of the samples Gradually enhanced.