铸造铝合金表面微弧氧化膜的特性研究  

Characterization of Micro-arc Oxidation Coating on Casting Aluminum Alloy

作　　者：张雅萍[1,2] 刘向东[1] 吕凯[1] 

机构地区：[1]内蒙古工业大学材料科学与工程学院,内蒙古呼和浩特010051 [2]内蒙古化工职业学院,内蒙古呼和浩特010011

出　　处：《铸造技术》2014年第5期967-970,共4页Foundry Technology

基　　金：内蒙古自治区高等学校科学研究项目(NJZY11254)

摘　　要：在电解液中添加不同含量的Li2SO4,在铸造铝合金表面制得微弧氧化陶瓷层。采用SEM、XRD和EDS等分析陶瓷层表面形貌及物相组成。结果表明,随着电解液中Li2SO4加入量的增加,微弧氧化膜厚度增加,膜层表面变得粗糙。微弧氧化膜主要是由α-Al2O3、γ-Al2O3、莫来石和非晶相组成。The oxidation coatings on casting aluminum alloy surface were obtained by micro-arc oxidation in electrolyte containing Li2SO4. Characteristics of the coating such as microstructure, phase composition were analyzed by SEM, XRD and EDS. The results show that, with the increase of the Li2SO4 concentration in the electrolyte, the thickness of the coating increases, and the films become more roughness. The micro-arc oxidation films are mainly composed of α-Al2O3,γ-Al2O3, mullite and amorphousness.

关 键 词：ZAlSi12Cu2Mg1合金 微弧氧化 LI2SO4 表征 

分 类 号：TG174.4[金属学及工艺—金属表面处理]