In order to obtain rust, brown, gun-black and ancient green films on brass at room temperature, the chemical coloring process on brass in acid solution was studied.
为了在黄铜基材上室温下获得铁锈色、棕色、枪黑色、仿古绿色膜层，研究了黄铜酸性化学着色工艺。
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Method for black coloring of brass and tin was investigated. The optimal formulation and technological process for chemical black coloring of brass and tin surfaces present together were chosen out.
The main compositions of black coloring films of brass and tin surfaces were deduced through the EDX analysis. The black film on brass should be constructed mainly by copper oxide, and that o...