Titanium-zirconium-phosphonate hybrid film on 6061 aluminum alloy

doi:10.11890/1006-7191-111-18

Abstract

Abstract: Three titanium-zirconium-phosphonate hybrid films were formed on AA6061 aluminum alloy by immersing in fluorotitanic acid and fluorozirconic acid based solution containing different phosphonic acids for protective coatings of aluminium alloy. The corrosion resistance of three hybrid films as the substitute for chromate film were evaluated and compared. The neutral salt spray test was explored, the immersion test was conducted and electrochemical test was also executed. The hybrid films exhibited well-pleasing corrosion resistance and adhesion to epoxy resin paints. It was found out that the hybrid films could efficiently be a substitute for chromate based primer over aluminium alloy.

Key words: Aluminum alloy, Titanium-zirconium-phosphonate, Hybrid film, Corrosion resistance

Shuanghong WANG, Lei WANG, Changsheng LIU. Titanium-zirconium-phosphonate hybrid film on 6061 aluminum alloy[J]. Acta Metallurgica Sinica (English Letters), 2011, 24(1): 18-22.

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Titanium-zirconium-phosphonate hybrid film on 6061 aluminum alloy

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