Research on Corrosion of Titanium Alloy by Hydrogen Peroxide Paint Remover
The paint remover containing benzyl alcohol and hydrogen peroxide is safe and environmental friendly.To improve the paint removing efficiency,it is necessary to increase the amount of hydrogen peroxide.However,it might cause the corrosion of titanium alloys.The effects of different hydrogen peroxide content(e.g.,4.5％,9％,13.5％and 18％),different pH values(e.g.,5.0,6.0,7.0,8.0 and 9.0),different hydrogen peroxide decomposition inhibitors(e.g.,polyacrylamide,magnesium stearate,sodium tripolyphosphate and EDTA-Na2),and different corrosion inhibitor formulations(e.g.,EP030,benzotriazole,IDS magnesium and CTAB)are tested.The results show that the corrosion of titanium alloy is minimum and the paint removing efficiency meet the requirements when the amount of hydrogen peroxide is 3％,the pH of the paint remover is 5-6 and the ratio of A and B agents is 1:1.
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