硫酸电解液中铝合金硬质阳极氧化膜的表面形貌及性能研究  

Study on Surfcce Morphology and Properties of Hard Anodic Oxidation Film on Aluminum Alloy Prepared in Sulfuric Acid Electrolyte

作　　者：安思宇 吕威 李雪松[1] AN Siyu;LU Wei;LI Xuesong(Key Laboratory of Advanced Structural Materials,Ministry of Education,Changchun University of Technology,Changchun 130012,China)

机构地区：[1]长春工业大学先进结构材料省部共建教育部重点实验室,吉林长春130012

出　　处：《电镀与环保》2020年第3期50-52,共3页Electroplating & Pollution Control

摘　　要：在硫酸电解液中采用硬质阳极氧化技术对铝合金进行了表面处理,并研究了电流密度对阳极氧化膜性能的影响。结果表明:当电流密度为1.5 A/dm2时,阳极氧化膜表面最光滑,显微硬度最大,自腐蚀电位最正。当电流密度为2.0 A/dm2时,交流阻抗曲线的弧度最大。可见,当电流密度为1.5~2.0 A/dm2时,阳极氧化膜的耐蚀性较好。The aluminum alloy was treated by hard anodic oxidation technology in sulfuric acid,and the effect of current density on the properties of aluminum alloy was studied.The results showed that the anodic oxidation film exhibited a smooth surface,the highest microhardness and sel--corrosion potential when the current density was 1.5 A/dm^2.The arc of the AC impedance curvewas biggest when the current densitywas 2.0 A/dm^2.It can be concluded that the anodic oxidation film possessed excellent corrosion resistance when the current density was at the range of 1.5-2.0A/dm^2.

关 键 词：铝合金 阳极氧化膜 表面形貌 显微硬度 

分 类 号：TG174[金属学及工艺—金属表面处理]