PEO coatings obtained on an Mg-Mn type alloy under unipolar and bipolar modes in silicate-containing electrolytes

被引：144
作者：
Gnedenkov, S. V. [2 ]
Khrisanfova, O. A. [2 ]
Zavidnaya, A. G. [2 ]
Sinebryukhov, S. L. [2 ]
Egorkin, V. S. [2 ]
Nistratova, M. V. [2 ]
Yerokhin, A. [1 ]
Matthews, A. [1 ]
机构：
[1] Univ Sheffield, Dept Mat Engn, Sheffield S10 2TN, S Yorkshire, England
[2] Russian Acad Sci, Inst Chem, Far Eastern Branch, Vladivostok 690022, Russia
来源：
SURFACE & COATINGS TECHNOLOGY | 2010年 / 204卷 / 14期
基金：
俄罗斯基础研究基金会; 英国工程与自然科学研究理事会;
关键词：
Plasma electrolytic oxidation; Silicate-fluoride electrolyte; Mg-Mn alloy; Anticorrosion properties; Microhardness; AZ91D MAGNESIUM ALLOY; MICROARC OXIDATION COATINGS; CORROSION-RESISTANCE; CERAMIC COATINGS; CURRENT-DENSITY; ARC OXIDATION; GROWTH; MICROSTRUCTURE; PERFORMANCE; ANODIZATION;
D O I：
10.1016/j.surfcoat.2009.12.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Protective surface layers with high corrosion resistance (R-p = 3.3.105 ohm cm(2)) and significant microhardness (H = 4.8 GPa), as compared to the substrate material, were obtained on MA8 magnesium alloy by bipolar Plasma Electrolytic Oxidation (PEO) in a silicate-fluoride electrolyte. The phase and elemental composition and morphology of the coatings were investigated. It was found that the application of the bipolar PEO mode enables one to synthesise on the alloy's surface a high-temperature phase of magnesium silicate, forsterite (Mg2SiO4) having good anticorrosion and mechanical properties. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：2316 / 2322
页数：7
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