发明授权
US4316780A Method of producing color-anodized aluminium articles 失效
生产彩色阳极氧化铝制品的方法

Method of producing color-anodized aluminium articles
摘要:
Disclosed is a method of coloring an anodized and anodically reinforced aluminum or aluminum alloy article by cathodic treatment in a coloring solution wherein the cathodic electrolytic current is a negative voltage direct current having a duration substantially less than the interval therebetween and being repeated at a frequency sufficient to produce the required coloration.
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