【作者】 王玉江； 张长鹏； 王博； 王亚子； 黄玉炜； 黄威； 盛忠起； 魏世丞；

【Author】 Wang Yujiang;Zhang Changpeng;Wang Bo;Wang yazi;Huang Yuwei;Huang Wei;Sheng Zhongqi;Wei Shicheng;National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering;College of Mechanical Engineering and Automation, Northeastern University;College of Material Science and Engineering, Chongqing University;

【机构】 陆军装甲兵学院装备再制造技术国防科技重点实验室； 东北大学机械工程与自动化学院； 重庆大学材料科学与工程学院；

【摘要】 将纳米TiO₂添加到铝合金微弧氧化电解液中,在5083铝合金表面制备了微弧氧化层。选择电流密度、氧化时间、TiO₂浓度三个工艺参数,设计了三因素三水平的正交试验。选定表面形貌和Ti原子比两个指标对微弧氧化层进行评价,优选了微弧氧化的工艺参数。采用扫描电镜（SEM）观察了微弧氧化层的表面形貌。采用电化学工作站对微弧氧化的试样进行了阻抗和极化曲线测量,分析发现微弧氧化的最优工艺参数为电流密度15A/dm²,TiO₂浓度为4g/L,氧化时间为30min。通过盐雾试验,验证了微弧氧化层有优良的耐蚀性。更多还原

【Abstract】 Micro arc oxidation coating was prepared on 5083 aluminum alloy by adding nano TiO₂ to the micro arc oxidation electrolyte. The orthogonal experiment of three factors and three levels was designed by selecting the three technological parameters of current density, oxidation time and TiO₂ concentration. The surface morphology and Ti atomic ratio of two parameters were evaluated, and the technological parameters of micro arc oxidation were optimized. The surface morphology of micro arc oxidation was observed by scanning electron microscope（SEM）. The impedance and polarization curves of micro arc oxidation were measured by electrochemical workstation, analysis showed that the optimal process parameters for Mao oxidation are current density 15 A/dm², TiO₂ concentration is 4 g/L, oxidation time is 10 min.Through salt spray test, it is proved that the coating has excellent corrosion resistance.更多还原