发明授权
US3860503A Method for forming a colored coating on aluminous materials 失效
在铝材上形成有色涂层的方法

Method for forming a colored coating on aluminous materials
摘要:
Colored oxide coatings from yellow to brown on aluminum or aluminum alloy are formed by an anodic oxidation with an aqueous solution of 0.5 - 10.0 percent by weight of oxalic acid and 0.05 - 4.0 percent by weight of an ammonium salt, a metal acetate or a metal nitrate.
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