专利申请范围 1.形成阳极氧化膜之后,使其氧化膜活性化或变化氧化膜结构,可以迅速地进行电解着色;在含有金属盐的电解着色液中再次进行阳极氧化处理,可均匀地着色;再者,在同一液体中进行交流、负的直流或脉冲通电,可以迅速而且均匀地生成黑色氧化膜。以上是这种铝及铝合金黑色氧化膜生成方法的特点。 Patent Application Scope 1. After the anodic oxide film is formed, its oxide film is activated or its oxide film structure is changed, and electrolytic coloring can be rapidly carried out. Anodization is performed again in the electrolytic coloring solution containing the metal salt to uniformly color the oxide film. In addition, alternating current in the same liquid and negative direct current or pulse current can rapidly and uniformly form a black oxide film. These are the characteristics of the aluminum and aluminum alloy black oxide film forming method.