为了分析微弧氧化电解液中钙盐浓度对复合氧化法(即预氧化和微弧氧化复合处理)制备多孔二氧化钛涂层表面结构的影响,利用X射线衍射、扫描电镜及附带的能谱对涂层的表面相结构、形貌及元素组成进行了观测与分析,利用图像分析软件对涂层表面孔隙率进行测试.结果表明:复合氧化法制备的多孔二氧化钛涂层表面均含有单质钛、锐钛矿型二氧化钛和金红石型二氧化钛;钙盐浓度的变化对涂层表面结构有一定影响,随着钙盐浓度的增加,涂层中锐钛矿型二氧化钛相对含量减少,金红石型二氧化钛相对含量增加;涂层表面的钙、磷元素含量降低,钙磷原子比增加;在所选钙盐浓度下,表面孔隙率的变化不十分显著.
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