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利用极化曲线研究了08Al车身钢板材料在不同pH值的碱性脱脂剂溶液中表面腐蚀状况。通过电化学测试及扫描电镜(SEM)观察,得出结论:在碱性脱脂剂溶液中,钢板表面存在钝化膜破裂的现象,且随着pH值的升高,经过碱性脱脂剂溶液处理过的钢板表面腐蚀速率增加。
Polarization curves were used to study the surface corrosion of 08 Al steel plate materials in alkaline degreasing solution with different pH values. Electrochemical tests and scanning electron microscopy (SEM) observations showed that there was a passivation film rupture on the surface of the steel in alkaline degreasing solution. With the increase of pH value, the alkaline degreasing agent solution The corrosion rate of the steel surface increases.