In this paper, the UV-assisted sol–gel route was employed to fabricate the TiO₂ pore-sealing films on the micro-arc-oxidized (MAO) aluminum alloys (MAO/Al). As compared with the TiO₂ film derived from traditional sol–gel method, the UV-irradiated TiO₂ film showed a structure with less cracks, resulting in enhanced electrode potential, higher impedance, and lower corrosion current. Further, we investigated and compared the properties of the UV-treated amorphous oxides, including the TiO₂, ZrO₂, and TiO₂-ZrO₂ films on MAO/Al. It was found that their corrosion resistances were related to the metallic–oxygen–metallic (M–O–M) lattice in the films. The MAO/Al sealed with UV-irradiated ZrO₂ pore-sealing film showed higher corrosion resistance than the samples sealed with UV-irradiated TiO₂ film or TiO₂-ZrO₂ film, which was owing to the fact that a larger amount of M–O–M lattice formed in the UV-ZrO₂ film during the UV irradiation.

中文翻译：

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紫外线辐照的TiO 2，ZrO 2和TiO 2 -ZrO 2薄膜在微弧氧化铝合金上作为孔密封层的性能

在本文中，采用紫外线辅助溶胶-凝胶法在微弧氧化（MAO）铝合金（MAO / Al）上制备TiO ₂气孔密封膜。与传统溶胶-凝胶法制得的TiO ₂膜相比，紫外线辐照的TiO ₂膜具有较少的裂纹结构，从而提高了电极电势，提高了阻抗并降低了腐蚀电流。此外，我们研究并比较了包括TiO ₂，ZrO ₂和TiO ₂ -ZrO ₂的经紫外线处理的非晶氧化物的性能。在MAO / Al上的电影。发现它们的耐蚀性与薄膜中的金属-氧-金属（M-O-M）晶格有关。用紫外线辐照的ZrO ₂气孔密封膜密封的MAO / Al比用紫外线辐照的TiO ₂膜或TiO ₂ -ZrO ₂膜密封的样品显示出更高的耐腐蚀性，这是由于大量的M在UV辐照期间，在UV-ZrO ₂膜中形成了-OM晶格。