图2. 阳极氧化预处理的1060纯Al,7A04铝合金和2A12铝合金在江津大气环境中暴晒不同时间后的宏观腐蚀形貌
Fig.2. Corrosion images of anodized 1060 aluminium (a, b, c) 7A04 Al-based (d, e, f) and 2A12 Al-based (g, h, i) alloys after exposure in Jiangjin atmospheric environment for 1 month (a, d, g), 12 months (b, e, h) and 24 months (c, f, i)