氧化时间对ZL205A铝合金微弧氧化膜层的影响  

Effect of Oxidation Time on Micro-arc Oxidation Coating of ZL205A Aluminum Alloy

作　　者：李宏战[1] 李争显[1] 杜继红[1] 李少龙[1] 叶源盛 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2016年第10期2741-2745,共5页Rare Metal Materials and Engineering

基　　金：十二五某配套协作项目资助

摘　　要：在硅酸钠体系溶液中,研究了不同氧化时间对ZL_20_5A铝合金表面微弧氧化层表面形貌、厚度、元素分布及相组成的影响。结果表明,随氧化时间的增加,氧化膜表面微孔数量减少、孔径增大,膜层厚度不断增大;膜层中的Al、Si元素略有变化,O、P元素变化并不明显;氧化膜主要由α-Al_2O_3和Mullite(Al_6Si_2O_(13))组成,随着氧化时间的增加,膜层中的α-Al_2O_3和Mullite相含量不断提高,Mullite相主要由阳极反应中生成的Si O_2及Al_2O_3共同作用而产生。The influences of different oxidation time on surface morphology, thickness, elemental distribution and phase composition of micro-arc oxidation coatings on ZL205A was studied. The results show that with the increase of oxidation time, the number of micro-pores decreases while the size of micro-pores,the thickness increase. The content of Al, Si has little changes, O, P element did not change significantly. The MAO coating are mainly composed of α- Al2O3 and Mullite（Al6Si2O13）, with increasing oxidation time, the content of α- Al2O3 and Mullite increased,the Mullite phase mainly generated by the anode reaction product of SiO2 and Al2O3.

关 键 词：微弧氧化 氧化时间 ZL205A 铝合金 

分 类 号：TG174.4[金属学及工艺—金属表面处理]