ZL101A铝合金微弧氧化纳米陶瓷涂层的腐蚀行为研究  

Corrosion Behavior 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 Yan-wei;SONG Ren-guo(School of Mechanical Engineering,Zhejiang Industry Polytechnic College,Shaoxing 312000,China;Key Lab of E&M,Ministry of Education&Zhejiang Province,Zhejiang University of Technology,Hangzhou 310014,China;School of Materials Science and Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]浙江工业职业技术学院机械工程学院,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,杭州310014 [3]常州大学材料科学与工程学院,常州213164

出　　处：《人工晶体学报》2018年第9期1960-1965,共6页Journal of Synthetic Crystals

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

摘　　要：本文通过在硅酸盐电解液中加入纳米TiO_2添加剂,研究了在NaCl溶液中长时间浸泡后,ZL101A铸造铝合金微弧氧化陶瓷涂层的腐蚀行为。结果表明,微弧氧化涂层可以在一定程度上保护基体不被腐蚀,电解液中加入纳米TiO_2添加剂后,不但填补部分疏松层的孔洞,也增加了致密层的厚度,有效阻挡了Cl-对基体的直接侵入。TiO 2-containing ceramic coatings were prepared on the ZL101A aluminum alloy substrates by micro-arc oxidation(MAO)in silicate electrolytes doped with different concentrations.The corrosion behavior of micro-arc oxidation ceramic coating on ZL101A cast aluminum alloy after long time immersion in NaCl solution was studied.The results show that the micro-arc oxidation coating can protect the substrate from corrosion.After adding nano TiO 2 additive to the electrolyte,it not only fills the pores of the porous layer,but also increases the thickness of the dense layer,effectively blocking the direct intrusion of the Cl-to the substrate.

关 键 词：微弧氧化 铝合金 腐蚀行为 

分 类 号：TQ174[化学工程—陶瓷工业]