Special Features of Oxide Layer Formation on Magnesium Alloys during Plasma Electrolytic Oxidation

被引：1

作者：

Kossenko, A. ^{[1
]}

Zinigrad, M. ^{[1
]}

机构：

[1] Ariel Univ, Sci Pk, IL-40700 Ariel, Israel

来源：

GLASS PHYSICS AND CHEMISTRY | 2018年 / 44卷 / 02期

关键词：

plasma electrolytic oxidation; surface treatment; magnesium; islands mechanism; anomalous voltage form; MICRO-ARC OXIDATION; CORROSION BEHAVIOR; MG ALLOY; CONTAINING COATINGS; ALUMINUM-ALLOYS; HIGH EMISSIVITY; PEO COATINGS; DUTY CYCLE; AZ31; RESISTANCE;

D O I：

10.1134/S1087659618020098

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The process of the oxidation of magnesium alloys in a silicate electrolyte during plasma electrolytic oxidation is investigated. An anomalous form of the chronogram of the formation voltage of the oxide layer in the electrolytes with the highest silicate concentration (approximately 0.15 M Na2SiO3 center dot 5H(2)O) is detected. X-ray diffraction analysis, scanning electron microscopy with energy dispersive X-ray spectroscopy analysis, and thickness gauges are used to characterize the surface microstructure, phase composition, and thickness, respectively. Mechanisms for the initial period of PEO and the "insular" growth were described. During the "insular" growth, islands consisting of vitrified components of the electrolyte are growing on the original smooth surface.

引用

页码：62 / 70

页数：9

共 55 条

[1] Assessment of duplex coating combining plasma electrolytic oxidation and polymer layer on AZ31 magnesium alloy [J].