研究了温度为25℃、相对湿度为80%时NaCl对A3钢大气腐蚀的影响.结果表明,A3钢腐蚀失重随NaCl沉积量的增加而增加,同时随暴露时间的延长也呈增加趋势;但暴露一定时间后,腐蚀失重增加趋缓.采用扫描电镜(SEM/EDAX)及光电子能谱(XPS)对腐蚀形貌及产物成分进行了分析,腐蚀表面呈现不均匀的凹凸形貌,腐蚀产物上有细微裂缝.探讨了该条件下A3钢的大气腐蚀过程.
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