(1. 中国科学院 金属研究所 金属腐蚀与防护
国家重点实验室，沈阳 110016；
2. 云南大学 化学系， 昆明 650091;
3. 辽宁大学 化学科学与工程学院， 沈阳 110036)
摘 要: 用石英晶体微天平研究了温度为25℃、 相对湿度为90%条件下， NaCl和SO2的协同效应对Zn初期大气腐蚀行为的影响; 对该条件下Zn的初期大气腐蚀动力学进行了分析。 结果表明， NaCl和SO2的协同效应导致腐蚀加剧， 腐蚀增量大于两者各自单独存在时引起的腐蚀。同时应用X射线衍射仪及Fourier变换红外光谱仪对Zn表面腐蚀产物进行了分析。 探讨了Zn在NaCl和SO2协同效应影响下的腐蚀机理。
关键字: Zn; 初期大气腐蚀; 协同效应； NaCl; SO2
（1. State Key Laboratory for Corrosion and Protection,
Institute of Metal Research,
The Chinese Academy of Sciences,Shenyang 110016, China;
2. Department of Chemistry, Yunnan University, Kunming 650091, China;
3. School of Chemical Science and Engineering, Liaoning University,
Shenyang 110036, China）
Abstract: The influence of NaCl and SO2 on the initial atmospheric corrosion of Zn at 25℃ and 90%RH was investigated by means of quartz crystal microbalance (QCM) . NaCl and SO2 can obviously accelerate the initial corrosion of Zn respectively. The combined effect of NaCl and SO2 on the corrosion of Zn is greater than that caused by each single component. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction were used to characterize the corrosion products of Zn. A probable mechanism is presented to explain the experimental observations.
Key words: Zn; initial atmospheric corrosion; synergism; NaCl; SO2
