Characterization of Mg,Al-hydrotalcite conversion film on Mg alloy and Cl- and CO32- anion-exchangeability of the film in a corrosive environment

被引：152

作者：

Lin, J. K. ^{[1
]}

Hsia, C. L. ^{[1
]}

Uan, J. Y. ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Mat Engn, Taichung 402, Taiwan

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 11期

关键词：

magnesium alloys; corrosion; coating; minerals; anion-exchangeability;

D O I：

10.1016/j.scriptamat.2007.02.020

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work explores an environmentally clean method for synthesizing chemical conversion coatings on Mg alloy. An Mg,Al-hydrotalcite (Mg6Al2(OH)(16)CO3 center dot 4H(2)O) layer was initially developed on Mg alloy in an HCO3-/CO32- aqueous solution to protect the alloy from corrosion. The Mg,Al-hydrotalcite-coated Mg sample had a much greater corrosion resistance than an as-die-cast sample. In a corrosive environment (chloride solution), the hydrotalcite layer exhibited CO32- for Cl- anion-exchangeability, causing that the layer protected Mg alloy against corrosion. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：927 / 930

页数：4

共 22 条

[11] Hydrogen production via hydrolysis reaction from ball-milled Mg-based materials [J].

Grosjean, MH ;

Zidoune, M ;

Roué, L ;

Huot, JY .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2006, 31 (01) :109-119

[12] Recycling automotive magnesium scrap [J].

Hanko, G ;

Antrekowitsch, H ;

Ebner, P .

JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2002, 54 (02) :51-54

[13]

Javaid A, 2006, MAGNESIUM TECHNOLOGY 2006, PROCEEDINGS, P7

[14] Characterization of the chemical conversion films that form on Mg-Al alloy in colloidal silica solution [J].

Kim, SJ ;

Zhou, Y ;

Ichino, R ;

Okido, M ;

Tanikawa, S .

METALS AND MATERIALS INTERNATIONAL, 2003, 9 (02) :207-213

[15]

LIDE DR, 1992, HDB CHEM PHYSICS, P4

[16]

LIN GS, 2005, J ELECTROCHEM SOC, V152, P54

[17] SYNTHESIS OF HYDROTALCITE-LIKE COMPOUNDS AND THEIR PHYSICOCHEMICAL PROPERTIES - SYSTEMS MG2+-AL3+-SO42- AND MG2+-AL3+-CRO42- [J].

MIYATA, S ;

OKADA, A .

CLAYS AND CLAY MINERALS, 1977, 25 (01) :14-18

[18]

PETRUCCI RH, 2002, GENERAL CHEM, P885

[19]

SKAR JI, 2004, ICEPAM INT C ENV FRI, P1

[20] Mechanism of dihydrogen formation in the magnesium-water reaction [J].

Taub, IA ;

Roberts, W ;

LaGambina, S ;

Kustin, K .

JOURNAL OF PHYSICAL CHEMISTRY A, 2002, 106 (35) :8070-8078

← 1 2 3 →