Influence of anodic oxide film structure on adhesive bonding performance of 5754 aluminum alloy  

阳极氧化膜的结构对5754铝合金胶接性能的影响（英文）

作　　者：Ying-dong LI Pi-zhi ZHAO Ying-juan FENG Hai-long CAO 李英东;赵丕植;冯莹娟;曹海龙(中铝材料应用研究院有限公司)

机构地区：[1]Chinalco Material Applications Research Institute Co.,Ltd.,Beijing 102209,China

出　　处：《Transactions of Nonferrous Metals Society of China》2019年第9期1836-1841,共6页中国有色金属学报（英文版）

基　　金：Project(2018MXJH17)supported by the Technology Foundation of Aluminum Corporation of China

摘　　要：Three types of anodic films(unsealed,hot water sealed and agent sealed)were prepared to study the effects of anodic film structure on the adhesive bonding performance of AA5754 automotive sheets.The morphology of the anodic films was examined by using scanning electron microscope(SEM)and the composition was examined by glow discharge optical emission spectroscopy(GDOES).The adhesive bonding strength and the durability in corrosive environment were investigated by using single lap-hear test and salt spray test(SST),respectively.The results showed that the unsealed sample could provide high initial bonding strength,but the durability was poor in corrosive environment.The hot water sealed sample could provide high durability,but the bonding strength was low.In contrast,the agent sealed sample displayed porous structure at outer layer and partially plugged nano pores structure at inner layer,providing both excellent bonding strength and durability.采用5754汽车用铝合金板材制备三种不同类型的阳极氧化膜(未封孔、热水封孔、封闭剂封孔),研究阳极氧化膜的结构对铝合金板材胶接性能的影响。采用扫描电子显微镜(SEM)和辉光放电光谱(GDOES)分别研究阳极氧化膜的显微形貌和成分,采用胶接实验研究不同阳极氧化处理下铝合金板材的胶接接头强度,并结合盐雾实验(SST)研究阳极氧化膜和胶接接头的耐腐蚀性能。结果表明,未封闭试样可以提供高初始胶接强度,但是在腐蚀环境下胶接强度下降;热水封闭的试样在腐蚀环境下胶接强度未出现明显下降,但是胶接强度整体偏低;采用封闭剂处理的试样,膜层结构为外部呈现多孔,内部纳米孔洞被部分封堵,初始胶接强度和耐久性匀很高。

关 键 词：ANODIZING sealing agent glow discharge optical emission spectroscopy(GDOES) LAP-SHEAR BONDING 

分 类 号：TG1[金属学及工艺—金属学]