Microarc oxidation of corrosion resistant ceramic coating on a magnesium alloy

Hongfei Guo; Maozhong An; Shen Xu; Huibin Huo

doi:10.1016/j.matlet.2005.11.066

Microarc oxidation of corrosion resistant ceramic coating on a magnesium alloy

Hongfei Guo^*
, Maozhong An
, Shen Xu
, Huibin Huo

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

87 Scopus citations

Abstract

A ceramic coating was fabricated on AZ31B magnesium alloy in alkaline silicate solution by microarc oxidation to improve its corrosion resistance. XRD analysis indicates that the ceramic coating is composed of spinel phase Mg ₂SiO₄ and MgO. SEM images indicate that the coating is composed of two layers, a porous outer layer and a dense inner layer. A few circular pores of 1-3 μm diameter are present in the porous outer layer, but they do not penetrate the dense inner layer. The corrosion resistance of magnesium alloys coated with ceramic coating was improved considerably as verified by potentiodynamic polarization curves and weight loss measurement in 3.5 wt.% NaCl solution.

Original language	English
Pages (from-to)	1538-1541
Number of pages	4
Journal	Materials Letters
Volume	60
Issue number	12
DOIs	https://doi.org/10.1016/j.matlet.2005.11.066
State	Published - Jun 2006

Keywords

Ceramics
Coatings
Corrosion
Magnesium alloy
Microarc oxidation

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10.1016/j.matlet.2005.11.066

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title = "Microarc oxidation of corrosion resistant ceramic coating on a magnesium alloy",

abstract = "A ceramic coating was fabricated on AZ31B magnesium alloy in alkaline silicate solution by microarc oxidation to improve its corrosion resistance. XRD analysis indicates that the ceramic coating is composed of spinel phase Mg 2SiO4 and MgO. SEM images indicate that the coating is composed of two layers, a porous outer layer and a dense inner layer. A few circular pores of 1-3 μm diameter are present in the porous outer layer, but they do not penetrate the dense inner layer. The corrosion resistance of magnesium alloys coated with ceramic coating was improved considerably as verified by potentiodynamic polarization curves and weight loss measurement in 3.5 wt.\% NaCl solution.",

keywords = "Ceramics, Coatings, Corrosion, Magnesium alloy, Microarc oxidation",

author = "Hongfei Guo and Maozhong An and Shen Xu and Huibin Huo",

year = "2006",

month = jun,

doi = "10.1016/j.matlet.2005.11.066",

language = "英语",

volume = "60",

pages = "1538--1541",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Microarc oxidation of corrosion resistant ceramic coating on a magnesium alloy

AU - Guo, Hongfei

AU - An, Maozhong

AU - Xu, Shen

AU - Huo, Huibin

PY - 2006/6

Y1 - 2006/6

N2 - A ceramic coating was fabricated on AZ31B magnesium alloy in alkaline silicate solution by microarc oxidation to improve its corrosion resistance. XRD analysis indicates that the ceramic coating is composed of spinel phase Mg 2SiO4 and MgO. SEM images indicate that the coating is composed of two layers, a porous outer layer and a dense inner layer. A few circular pores of 1-3 μm diameter are present in the porous outer layer, but they do not penetrate the dense inner layer. The corrosion resistance of magnesium alloys coated with ceramic coating was improved considerably as verified by potentiodynamic polarization curves and weight loss measurement in 3.5 wt.% NaCl solution.

AB - A ceramic coating was fabricated on AZ31B magnesium alloy in alkaline silicate solution by microarc oxidation to improve its corrosion resistance. XRD analysis indicates that the ceramic coating is composed of spinel phase Mg 2SiO4 and MgO. SEM images indicate that the coating is composed of two layers, a porous outer layer and a dense inner layer. A few circular pores of 1-3 μm diameter are present in the porous outer layer, but they do not penetrate the dense inner layer. The corrosion resistance of magnesium alloys coated with ceramic coating was improved considerably as verified by potentiodynamic polarization curves and weight loss measurement in 3.5 wt.% NaCl solution.

KW - Ceramics

KW - Coatings

KW - Corrosion

KW - Magnesium alloy

KW - Microarc oxidation

UR - https://www.scopus.com/pages/publications/33644865250

U2 - 10.1016/j.matlet.2005.11.066

DO - 10.1016/j.matlet.2005.11.066

M3 - 文章

AN - SCOPUS:33644865250

SN - 0167-577X

VL - 60

SP - 1538

EP - 1541

JO - Materials Letters

JF - Materials Letters

IS - 12

ER -

Microarc oxidation of corrosion resistant ceramic coating on a magnesium alloy

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Keywords

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