6063铝型材表面斑状缺陷成因探讨  

Discussion on Causes for Spat-like Defects on Aluminium Alloy 6063 Surface

作　　者：杨杨[1] 陈秀琴[1] 徐志强 楚风武 赵邵安 

机构地区：[1]中南大学材料科学与工程系,湖南长沙410083 [2]湖南振升铝材有限公司,湖南长沙410126

出　　处：《矿冶工程》2001年第2期75-77,共3页Mining and Metallurgical Engineering

摘　　要：用OM、SEM观察了铝型材制品表面氧化膜的尺寸、形貌和成分 ,用CASS试验考察了铝型材制品表面氧化膜的耐蚀性 ,测定了氧化槽、封孔槽内离子浓度并讨论了它们对氧化膜质量的影响。结果表明 :铝基体中第二相析出过多 ,氧化槽、封孔槽内离子浓度控制不当都会影响氧化膜的生成质量和封孔质量。The metallographic microstructure of aluminium alloy 6063 were characterised by OM and SEM. The corrosion resistance was tested by the CASS method. The ion concentrations in the oxidizing and sealing liquids were analysed and the effects of these ion concentrations on the quality of the anodic oxidation film were cliscussed. The resnlts show that the quality of the anodic oxidation film was affected by the second phase content in the aluminium matrix and ion concentrations in the oxidizing and sealing liquids. Incompletets sealing led to the occurrence of the spot-like defects on the alloy surface.

关 键 词：斑状缺陷 氧化膜 铝合金 铝型材 表面质量 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TU512.4[金属学及工艺—金属材料]