Effect of acetic acid on corrosion behavior of welded aluminum alloy 5254 in hydrogen peroxide solution

摘要

Attempts have been made to clarify an effect of acetic acid in hydrogen peroxide solution on corrosion behavior of welded aluminum alloy. The corrosion mass loss and polarization curve measurements have been carried out to obtain relationshipbetween the acetic acid in hydrogen peroxide solution and electrochemical behavior of the 5254 aluminum specimen which was MIG-welded with 5654 aluminum alloy wire. It is found that the addition of 100ppm acetic acid to a 30hydrogen peroxide solution accelerated corrosion of the welded 5654 specimen, which is considered from the electrochemical point of views such as the increasing hydrogen ions and decreasing the polarization resistance.