title: Effects of ultrasound on the evolution of plasma electrolytic oxidation process on 6061Al alloy.
abstract: The plasma electrolytic oxidation (PEO) process of 6061Al alloy was carried out under the conditions with and without the assistance of ultrasound, respectively. The effects of ultrasound on the evolution of voltage, micro-discharge, morphology and composition of PEO coatings were investigated. The results show that ultrasound can greatly decrease the dielectric breakdown voltage of the coatings, increase the number of micro-discharges while decrease their average size, promote the evolution of micro-discharges, decrease the number and the average size of residual discharge pores in the coatings after 30min of the process, promote the homogeneous distribution of elements and the formation of α-Al2O3 and 3Al2O3⋅2SiO2 in the coatings.
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China. Electronic address: sdj217@ysu.edu.cn.
authors.forename: Dejiu
authors.initials: D
authors.lastname: Shen
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China. Electronic address: hdl0618@163.com.
authors.forename: Donglei
authors.initials: D
authors.lastname: He
authors.affiliation: Dong Guan EONTEC Co., Ltd, Dongguan 523662, PR China.
authors.forename: Fangfei
authors.initials: F
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Changhong
authors.initials: C
authors.lastname: Guo
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Jingrui
authors.initials: J
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Guolong
authors.initials: G
authors.lastname: Li
authors.affiliation: State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and Engineering, Yanshan University, Qinhuangdao 066004, PR China.
authors.forename: Haojie
authors.initials: H
authors.lastname: Ma
keywords: 6061Al alloy; Plasma electrolytic oxidation; Ultrasound