采用干湿周浸实验模拟海洋大气环境研究含Cu耐候桥梁钢腐蚀过程中耐腐蚀性能的变化,并利用XRD,SEM等方法研究了两种不同Cu含量耐候桥梁钢的锈层变化.结果表明:Cu能够有效地降低钢的平均腐蚀深度和腐蚀速率,利于提高钢的耐蚀性能.锈层组成随腐蚀时间而变化,腐蚀初期锈层主要由Fe3O4和γ-FeOOH组成,腐蚀中期锈层开始生成Ni(0.6-1)Fe(2.4-2) O4尖晶石类复合氧化物和α- FeOOH两种晶相；腐蚀后期组成基本保持不变,主要由Ni(0.6-1) Fe(2.4-2) O4、α- FeOOH、γ- FeOOH和少量We3 O4组成.
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