The effect of Zn concentration on the corrosion behavior of Mg-xZn alloys

被引：284

作者：

Song, Yingwei ^{[1
]}

Han, En-Hou ^{[1
]}

Shan, Dayong ^{[1
]}

Yim, Chang Dong ^{[2
]}

You, Bong Sun ^{[2
]}

机构：

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

[2] Korea Inst Mat Sci, Chang Won 641831, South Korea

来源：

CORROSION SCIENCE | 2012年 / 65卷

基金：

中国国家自然科学基金;

关键词：

Magnesium; EIS; Polarization; Pitting corrosion; AZ31 MAGNESIUM ALLOY; Y-ZR ALLOYS; MECHANICAL-PROPERTIES; NACL SOLUTION; 2ND PHASES; CA ALLOYS; MN ALLOY; MICROSTRUCTURE; CHLORIDE; AZ91;

D O I：

10.1016/j.corsci.2012.08.037

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Zn concentration on the corrosion behavior of Mg-xZn alloys is investigated. The microstructure is observed by scanning electron microscopy (SEM). The corrosion resistance is evaluated by electrochemical and immersion tests. The initiation and propagation of corrosion are analyzed based on the electrochemical measurements and corrosion morphologies observation. It is found that the MgxZny second phases are precipitated on the boundaries and their volume fractions rise with increasing Zn concentration. As a result, the corrosion resistance of Mg-xZn alloys reduces with increasing Zn concentration, which is greatly associated with the micro-cathodic effect of the MgxZny second phases. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：322 / 330

页数：9

共 39 条

[1] Analysis of the electrochemical reaction behavior of alloy AZ91 by EIS technique in H3PO4/KOH buffered K2SO4 solutions [J].

Anik, Mustafa ;

Celikten, Gizem .

CORROSION SCIENCE, 2007, 49 (04) :1878-1894

[2]

[Anonymous], 2002, INTRO ELECTROCHEMICA

[3] Relationship between the corrosion behavior and the thermal characteristics and microstructure of Mg-0.5Ca-xZn alloys [J].

Bakhsheshi-Rad, H. R. ;

Abdul-Kadir, M. R. ;

Idris, M. H. ;

Farahany, S. .

CORROSION SCIENCE, 2012, 64 :184-197

[4] AC impedance spectroscopy in characterizing time-dependent corrosion of AZ91 and AM50 magnesium alloys -: Characterization with respect to their microstructures [J].

Baril, G ;

Blanc, C ;

Pébère, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (12) :B489-B496

[5] The role of Mg2Si on the corrosion behavior of wrought Mg-Zn-Mn alloy [J].

Ben-Hamu, G. ;

Eliezer, D. ;

Shin, K. S. .

INTERMETALLICS, 2008, 16 (07) :860-867

[6] The role of Si and Ca on new wrought Mg-Zn-Mn based alloy [J].

Ben-Hamu, G. ;

Eliezer, D. ;

Shin, K. S. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 447 (1-2) :35-43

[7] Microstructure and corrosion behavior of Mg-Zn-Ag alloys [J].

Ben-Hamu, G. ;

Eliezer, D. ;

Kaya, A. ;

Na, Y. G. ;

Shin, K. S. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 435 :579-587

[8] Corrosion behaviour of stressed magnesium alloys [J].

Bonora, PL ;

Andrei, M ;

Eliezer, A ;

Gutman, EM .

CORROSION SCIENCE, 2002, 44 (04) :729-749

[9] Mechanical properties of naturally aged Mg-Zn-Cu-Mn alloy [J].

Buha, J. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 489 (1-2) :127-137

[10]

Cal S.H., MAT SCI ENG C

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