Zinc Phosphatization of Aluminum Alloy

The effects of the corrosive accelerator,acid ratio,phosphatizing temperature,phosphatizing time and the additives on zinc phosphatization of aluminum alloy were investigated.The optimum phosphatizing parameters for LY12 aluminum alloy were obtained.The phosphatizing reactive mechanism of aluminum alloy is similar to that of steel process,and an important condition is that the surface of aluminum alloy can be moderately eroded by acidic fluoride.