The corrosion behavior of the welding seam of Q235 steel jointed by J420 electrode in ammonium sulfite solution was studied,adopting electrochemical method and metallographic analysis.

• 针对Q235钢焊缝在亚硫酸铵介质中腐蚀严重的实际,采用三电极电化学研究法和金相组织分析法研究了J420焊条焊接Q235钢的焊缝在亚硫酸铵介质中的腐蚀行为。