设计了一套适合于研究金属材料在薄层液膜下腐蚀的三电极 电化学测量电池.Cl-浓度的增大，促进了Zn在大量溶液中的阳极反应，降低了传递电阻和 自腐蚀电位，从而导致腐蚀速率增大.在0.01 mol/L的NaCl溶液中，随着液膜厚度的减小， 传递电阻增大，腐蚀速度降低.在同浓度、不同电解质的大量溶液中，Na2SO4溶液对Zn 的腐蚀最严重,其次是NaNO3,腐蚀最轻的是NaCl；而在薄层液膜下，对Zn的腐蚀作用最明 显的是NaCl；其次是Na2SO4；再次是NaNO3，最轻的是Na2CO3.
A three-electrode electrochemical cell to study the corrosion behavior of metal under thin electrolyte was designed.With the increa sing of Cl-,and the anodic reaction was promoted,the transfer resistance and c orrosion potential decreased,the corrosion rate increased.With the decreasing of electrolyte layer thickness,the transfer resistance of zinc in 0.01 mol/L NaCl solution increased,and the corrosion rate decreased.In the bulk solution with di fferent salt,the order of effect on the corrosion of zinc from the severest to t he lightest is Na2SO4,NaNO3 ,Na2CO3 and NaCl,while under thin electrol yte,the order is NaCl,Na2SO4,NaNO3 and Na2CO3.
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