ZL101A铝合金微弧氧化纳米陶瓷涂层耐腐蚀性能的研究  

Corrosion resistance of micro-arc oxidation nano ceramic coating of ZL101A aluminum alloy

作　　者：张宇[1,2] 赵燕伟[2] 宋仁国 ZHANG Yu;ZHAO Yanwei;SONG Renguo(School of Mechanical Engineering,Zhejiang Industry Polytechnic College,Shaoxing 312000,China;Key Laboratory of Special Purpose Equipment and Advanced Processing Technology,Ministry of Education,Zhejiang University of Technology,Hangzhou 310014,China;School of Materials Science and Engineering,Changzhou University,Changzho＇u 213164,China)

机构地区：[1]浙江工业职业技术学院机械工程学院,浙江绍兴312000 [2]浙江工业大学特种装备制造与先进加工技术教育部/浙江重点实验室,浙江杭州310014 [3]常州大学材料科学与工程学院,江苏常州213164

出　　处：《兵器材料科学与工程》2018年第6期54-58,共5页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51371039);浙江省科技厅公益性技术应用研究计划项目(2017C31039)

摘　　要：在硅酸盐电解液中加入纳米TiO_2添加剂,利用扫描电镜(SEM)、X射线衍射仪(XRD)、电化学工作站等进行动电位极化曲线和电化学阻抗测试,研究经NaCl溶液长时间浸泡后,ZL101A铸造铝合金微弧氧化陶瓷涂层的耐蚀性能。结果表明,在5%的NaCl溶液中浸泡384 h后,涂层才出现比较明显的腐蚀,可见此工艺很大程度改善了涂层的耐腐蚀性能。The ceramic coatings were prepared on the ZL101A aluminum alloy substrates by micro-arc oxidation （MAO） in silicate electrolytes doped with different concentrations of nano TiO2. The corrosion resistance of micro-arc oxidation ceramic coating on ZL101A cast aluminum alloy after long time immersion in NaC1 solution was studied by means of SEM, XRD and electrochemical workstation. The results show that the coating is significantly corroded after immersing in 5% NaC1 solution for 384 h, indicating that this process can improve the corrosion resistance of the coating to a great extent.

关 键 词：微弧氧化 铝合金 腐蚀性能 

分 类 号：TG174.451[金属学及工艺—金属表面处理]