Formation mechanism of phosphate conversion film on Mg-8.8Li alloy

被引：98

作者：

Song, Yingwei ^{[1
]}

Shan, Dayong ^{[1
]}

Chen, Rongshi ^{[1
]}

Zhang, Fan ^{[1
]}

Han, En-Hou ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

CORROSION SCIENCE | 2009年 / 51卷 / 01期

关键词：

Magnesium; XPS; Oxide coatings; AZ91D MAGNESIUM ALLOY; CORROSION-RESISTANCE; THIN SHEET; COATINGS; FORMABILITY; GROWTH;

D O I：

10.1016/j.corsci.2008.10.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel phosphate conversion film was obtained on Mg-8.8Li alloy. The film formation mechanism was studied by electrochemical measurements, scanning electron microscopy (SEM) observation and X-ray photoelectron spectroscopy (XPS) analysis. The deposition of conversion film contained three stages. Stage I: loose surface film consisting of oxides and hydroxides was dissolved to expose the bare substrate. Stage II: beta phase was preferentially dissolved, accompanying with the deposition of conversion film, and then a phase was deposited with conversion film. Stage III: conversion film was gradually improved until the dynamic balance of film dissolution and formation was established. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：62 / 69

页数：8

共 21 条

[1] Evaluation of microstructural effects on corrosion behaviour of AZ91D magnesium alloy [J].

Ambat, R ;

Aung, NN ;

Zhou, W .

CORROSION SCIENCE, 2000, 42 (08) :1433-1455

[2] Mechanical properties and microstructures of various Mg-Li alloys [J].

Chang, Tien-Chan ;

Wang, Jian-Yih ;

Chu, Chun-Len ;

Lee, Shyong .

MATERIALS LETTERS, 2006, 60 (27) :3272-3276

[3] Improvement in stannate chemical conversion coatings on AZ91 D magnesium alloy using the potentiostatic technique [J].

Elsentriecy, Hassan H. ;

Azumi, Kazuhisa ;

Konno, Hidetaka .

ELECTROCHIMICA ACTA, 2007, 53 (02) :1006-1012

[4] Phosphate coatings on magnesium alloy AM60 part 1: study of the formation and the growth of zinc phosphate films [J].

Kouisni, L ;

Azzi, M ;

Zertoubi, M ;

Dalard, F ;

Maximovitch, S .

SURFACE & COATINGS TECHNOLOGY, 2004, 185 (01) :58-67

[5] Crystallography of the bcc/hcp transformation in a Mg-8Li alloy [J].

Kral, M. V. ;

Muddle, B. C. ;

Nie, J. F. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 460 :227-232

[6] The process of electrochemical deposited hydroxyapatite coatings on biomedical titanium at room temperature [J].

Kuo, MC ;

Yen, SK .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2002, 20 (1-2) :153-160

[7] Growth of zinc phosphate coatings on AZ91D magnesium alloy [J].

Li, G. Y. ;

Lian, J. S. ;

Niu, L. Y. ;

Jiang, Z. H. ;

Jiang, Q. .

SURFACE & COATINGS TECHNOLOGY, 2006, 201 (3-4) :1814-1820

[8] Formation and properties of stannate conversion coatings on AZ61 magnesium alloys [J].

Lin, CS ;

Lin, HC ;

Lin, KM ;

Lai, WC .

CORROSION SCIENCE, 2006, 48 (01) :93-109

[9] Study on the corrosion resistance of phytic acid conversion coating for magnesium alloys [J].

Liu Jianrui ;

Guo Yina ;

Huang Weidong .

SURFACE & COATINGS TECHNOLOGY, 2006, 201 (3-4) :1536-1541

[10]

Moulder J.F., 1979, HDB XRAY PHOTOELECTR

← 1 2 3 →