【摘要】 设计了用于研究金属材料在薄层液膜下腐蚀行为的参比电极后置式三电极电化学测量电池 ,并用此研究了铜在薄层液膜下的阳极极化行为 .用双电极电解池研究了铜在薄层液膜下的交流阻抗行为 .结果表明 :薄层液膜 (0 .5mol/LHCl+ 0 .2 5mol/LNa2 SO4 电解质 )厚度的减小 ,影响了Cu腐蚀的阳极过程 ,使Cu的阳极溶解由Tafel区转向极限扩散电流区 ,腐蚀机制发生了变化 ,增大了Cu的自腐蚀电位更多还原

【Abstract】 A suit of electrochemical cell which was used to investigate the corrosion behavior of metals under different thin layer electrolyte was designed.The Luggin probe of the cell was inserted backward of the working electrode.The results showed the layer thickness mainly affected the cathodic process of Cu in the electrolyte (0.5 mol/L HCl+0.25 mol/L Na 2SO 4),the anodic dissolution changed from Tafel zone to limiting current zone.Moreover the corrosion potential increased with decreasing of the layer.更多还原