Applied Research of Titanium Oxide to Seal the Anodized Al Alloy

The anodized Al alloy films are sealed in the alumina sol with anatase type of titanium oxide.Coloration experiment; acid drip test and self-cleaning efficiency are used as evaluation criterions. Orthogonal test of sol sealed films and Two Factor test are used to value the influence of technological parameters on properties of the sealed films. The results show that the corrosion resistance of sealed film doped with TiO 2 was superior to that of without in neutral saline water. Three-dimensional surface morphologies obtained by OLS3100 laser confocal scanning microscope (LSCM ) show that the sealed films with are smoother than ones without TiO 2 and its pits in the sealed film are less. The sealed films with TiO 2 have both corrosion resistance and self-cleaning effect.