INFLUENCE OF TIN AND ZINC ON CORROSION RESISTANCE OF COPPER ALLOYS

To determine the influence of tin,zinc on the corrosion behavior of copper alloys in the weak acid (pH6) and weak basic (pH8) solutions,the method of anodic polarization test was adopted.The copper alloy with 5% Sn formed compact and stable protective film in the weak acid solution,and accordingly improved the corrosive resistance of and relatively,and in the weak basic solution,the effect of both tin and zinc was indistinctive.