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本发明是利用换向电流电解使铝及铝合金在电解液中生成硬质阳极氧化膜的一种方法.铝或铝合金具有重量轻、加工容易等优点,但是也存在因质软而易划伤或摩损等缺点.为了弥补这个缺点,普遍采用的方法是选择适当的电解条件,在铝及铝合金表面生成致密的硬质阳极氧化膜.但是氧化膜跟电镀层不同,它是被处理材料表面本身变化而生成的氧化物,所以它的性能在很大程度上被铝材的种类所左右.一般说来,钝铝氧化
The present invention is a method of using a commutation current electrolysis to make aluminum and aluminum alloy hard anodized film in the electrolyte. Aluminum or aluminum alloy has the advantages of light weight, easy processing, etc., but also has the advantages of soft Injury or wear and tear, etc. In order to compensate for this shortcoming, the commonly used method is to choose the appropriate electrolysis conditions, the surface of aluminum and aluminum alloy to generate a dense hard anodic oxide film, but the oxide film is different from the plating layer, it is processed The surface of the material itself changes and the resulting oxide, so its performance is largely dominated by the type of aluminum. In general, the passive aluminum oxide