Corrosion-Electrochemical Behaviour of Low-Alloy Steel in Alkaline Media

Abstract

1 The authors demonstrated that low-alloy chrome-molybdenum-vanadium 12Cr1MoV steel has more positive open circuit potential and lower hydrogen evolution overvoltage in concentrated alkaline solution, compared to ordinary-quality St3 steel. After 1100 A•h•m-2 charge passing, 12Cr1MoV anodic dissolution rate becomes lower than St3 dissolution rate. It does not increase with current density increase.