目前，就铝硅合金在发动机冷却液中的腐蚀行为的研究未见深入报道。为此，利用失重、电化学阻抗和极化曲线等方法研究了AA6061铝合金在乙二醇-腐蚀水模拟冷却液体系中的腐蚀行为。结果表明，AA6061铝合金在乙二醇-腐蚀水溶液中存在2个腐蚀速率区间，初期腐蚀速率较低，随后腐蚀速率较高；在腐蚀反应开始时，乙二醇的吸附抑制了AA6061铝合金的表面腐蚀；但是随着浸泡时间的延长，乙二醇加速了AA6061合金的腐蚀。乙二醇高温氧化的副产物乙醇酸提高了AA6061合金在乙二醇冷却液中的腐蚀敏感性。
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