电流比对铝合金微弧氧化膜层微观结构和耐蚀性能的影响  

Effect of Current Ratio on Microstructure and Corrosson Performance of Micro-arc Oxidation Coating on Al Alloy

作　　者：郑连泽 杨艳[2] 穆耀钊[2] 韩新罡[2] 魏刚[2] 齐丽娜[2] 冯小平[2] 

机构地区：[1]海装西安局,陕西西安710089 [2]中国船舶重工集团公司第十二研究所,陕西兴平713102

出　　处：《热加工工艺》2015年第6期146-148,共3页Hot Working Technology

摘　　要：在铝酸盐体系溶液中采用不同的电流比对ZL101A铝合金材料进行微弧氧化处理,对所获得的微弧氧化膜层用扫描电镜进行形貌观察分析,用X射线衍射仪对膜层成分进行分析,用极化曲线评价比较膜层耐蚀性。结果表明:当电流比I-/I+=2时,膜层中α-Al2O3的相对含量最高,当电流比I-/I+=1.5时,膜层耐蚀性能最好。ZL101A aluminum alloys were treated by micro-arc oxidation with different current ratios in the aluminate solution.Then the morphology and composition of the film were analyzed with SEM and XRD,respectively.The corrosion resistance of the film was also evaluated by polarization curves.The results show that：when the current ratio of I-/I＋is 2,the relative content of α-Al2O3 in the film is the highest,while when the current ratio of I-/I＋is 1.5,the film has the best corrosion resistance

关 键 词：电流比 微弧氧化 耐蚀性能 

分 类 号：TG174.4[金属学及工艺—金属表面处理]