研究了在25℃、相对湿度为80%的条件下,NaCl和低浓度SO2的协同效应对A3钢初期大气腐蚀行为的影响.分析了该条件下A3钢的初期大气腐蚀动力学,证实了NaCl和低浓度SO2的协同效应导致腐蚀明显加剧,腐蚀失重远大于两者各自存在时引起的腐蚀.同时应用扫描电镜(SEM/EDAX)、X射线衍射(XRD)和Fourier变换红外光谱(FTIR)对A3钢表面形貌和腐蚀产物进行了分析.阐述了NaCl和SO2协同效应的腐蚀机理.
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