Whether Steel And Aluminum Can Be Blackened Together

I don't think so! First of all, in the electrolyte liquid between the two metals, due to the different chemical activity (also known as the potential difference) there will be galvanic effect, a hurt! Secondly, the blackening principle is different. The blackening of aluminum is the infiltration of black pigment in the anodic oxidation film of aluminum, and the blackening of steel is the oxidation of the surface to generate ferric oxide. Different processes are used.

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