用石英晶体微天平(QCM)和电化学方法研究了铜在0.5 mol/L Na2SO4溶液中的腐蚀行为．在该介质中，铜表面形成由多种硫酸盐构成的不具保护性的腐蚀产物膜，铜表现为线性增重．当加入1mmol／L2-巯基苯并恶唑(MBO)时，腐蚀过程被大大抑制．含MBO的Na2SO4溶液中形成的缓蚀膜具有较好的稳定性．
Ihe corrosion behavior of copper and inhibition of 2-mercaptobenzoxazole (MBO) in 0.5mol/LNa2SO4 solution was investigated by means of quartz crystal microbalance (QCMI),potentiodynamic polarization, SEM, FTIR and X-ray diffraction (XRD). In 0.5 mol/LNa2SO4 solution,copper corroded and produced a film of corrosion products that lacked protection, resulting inapproximately linear rmass gain. It was verified by XRD that the corrosion film was mainly composed ofseveral kinds of copper sulfate. With 1 mmol/L MBO, the corrosion was inhibited greatly and aninhibition efficiency of 99% was reached. It was found that the copper electrode immersed in Na2SO4 +MBO solution possessed evident corrosion resistance, indicating that a stable and protection film formed inthe immersing treatment.
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