Investigation of Corrosion Resistance of Pure Al and Al-Zn Alloy Coatings

摘要

The corrosion resistance of coatings of pure aluminum and Al-Zn alloy obtained by thermal deposition on aluminum alloy A19 and magnesium alloy MHO in an environment of synthetic oil IPM-10 at temperatures -60℃ and + 170℃ is investigated. We have established by electrochemical measurement that the coatings of pure Al and Al-Zn alloy on aluminum alloy A19 are anode in comparison with the substrate while the ones disposed on Mg substrate becomes cathode. The deposition coating of pure Al and Al-Zn alloy show a good protective effect on aluminum alloy A19 and magnesium alloy Ml10.