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众所周知,铝及其合金最可靠廉价的防护方法就是进行氧化,使其表面生成一定厚度的Al_2O_3膜层。氧化方法种类繁多,有膜厚只有2～4μm,膜层呈彩霞色,一般只做油漆底层的化学氧化法,也有将铝作为阳极置于相应电解液中,使其生成氧化膜的化学
It is well known that the most reliable and cheap protection method for aluminum and its alloys is to oxidize the Al 2 O 3 film to a certain thickness on the surface. A wide range of oxidation methods, the film thickness of only 2 ~ 4μm, the film was Caixia, generally only the bottom of the paint chemical oxidation method, there are aluminum as the anode placed in the corresponding electrolyte, so that the formation of oxide film chemistry