【摘要】 将二元稀土铝合金Al-10%RE（RE=Ce、Nd、Y、La，质量分数）在三亚和青岛2个大气腐蚀试验站进行了大气环境暴露试验。通过测量质量损失、观察腐蚀形貌、分析腐蚀产物和进行电化学测试等手段研究其在典型海洋大气环境下的腐蚀行为。结果表明，110 d的试验周期内，2个试验站的腐蚀速率关系是青岛>三亚，这可能与大气中SO₂含量有关。4种铝合金腐蚀速率关系Al-10Nd > Al-10La > Al-10Y > Al-10Ce，这可能与其微观结构析出相的数量和分布有关。2个试验站的腐蚀都是以局部腐蚀为主，形成的腐蚀产物成分差别不明显，主要产物是Al₂O₃、AlO（OH）和Al（OH）₃。此外，青岛站还生成了少量Al₂（SO₄）₃。生成的腐蚀产物膜对腐蚀过程有一定影响，合金的保护能力会随着时间的推移而发生变化。更多还原

【Abstract】 The binary Al-alloy Al-10%RE（Ce, Nd, Y, La） was placed in two atmospheric corrosion test stations（Sanya and Qingdao） for the purpose of conducting atmospheric exposure tests. The corrosion behavior in typical marine atmospheric environments was studied by measuring mass loss, observing corrosion morphology, analyzing corrosion products and performing electrochemical tests. The findings demonstrated that the corrosion rate relationship between the two test stations was Qingdao > Sanya during the 110 d test cycle, which may be associated with the SO₂ content in the atmosphere. And the corrosion rate relationship of the four binary aluminium alloys is Al-10 Nd > Al-10 La > Al-10Y > Al-10 Ce, which may be related to the number and distribution of their microstructural precipitated phases. The corrosion at the two test stations was mainly localized, and the composition of the corrosion products formed did not differ significantly, with the main products being Al₂O₃, AlO（OH） and Al（OH）₃. In addition, a small amount of Al₂（SO₄）₃ was generated at the Qingdao station. The corrosion product film that is generated exerts an effect on the corrosion process, and the protective ability of the alloy changes over time.更多还原