烟台大学学报（自然科学与工程版）2024，Vol.37Issue(3)：326-333,8.DOI:10.13951/j.cnki.37-1213/n.230209
基于COMSOL的7075铝合金微弧氧化时间及正向电压对氧化膜层的影响
Effect of Micro-arc Oxidation Time and Forward Voltage on Oxide Film of 7075 Aluminum Alloy Based on COMSOL
摘要
Abstract
The effect of micro-arc oxidation time and forward voltage on the thickness and growth trend of 7075 alu-minum alloy film is studied.Taking 7075 aluminum alloy as the research object,the physical model of the alumi-num alloy film-forming process is established with the help of multi-physical field simulation software COMSOL Mu-tiphysics,and the change of film thickness during micro-arc oxidation film-forming process is solved based on the fi-nite element method.The film thickness distribution diagram under specific time or voltage is simulated,and the voltage-film thickness curve,time-film thickness curve are drawn according to the simulation results.The simula-tion results show that when the forward voltage is 350,450 and 550 V,the maximum thickness of the film layer is 38.804,50.150 and 61.496 μm respectively.When the micro-arc oxidation time is 15,25,35 and 45 min,the maximum thickness of the film is 25.075,41.792,58.508 and 75.225 μm,respectively.The thickness of the film decreases gradually from the middle to both sides.According to the simulation results,the following conclu-sions can be drawn:with the increase of forward voltage oxidation time,the thickness of the film increases.The film thickness is positively correlated with the forward voltage and oxidation time.In terms of film thickness distri-bution,the closer the position is to the cathode,the thicker the film layer is,while the farther away from the cath-ode,the thinner the film layer is,and the thickest point and thinnest point of the film layer appear in the same po-sition under different parameters.关键词
微弧氧化/COMSOL/正向电压/氧化时间/7075铝合金Key words
micro-arc oxidation/COMSOL/forward voltage/oxidation time/7075 aluminium alloy分类
通用工业技术引用本文复制引用
柴永生,闫俊鹏,张龙,王守丽..基于COMSOL的7075铝合金微弧氧化时间及正向电压对氧化膜层的影响[J].烟台大学学报（自然科学与工程版）,2024,37(3):326-333,8.基金项目
国家自然科学基金资助项目(62205280). （62205280）
