Effect of Nd on the corrosion behaviour of AM50 and AZ91D magnesium alloys in 3.5 wt.% NaCl solution

被引：204

作者：

Arrabal, R. ^{[1
]}

Pardo, A. ^{[1
]}

Merino, M. C. ^{[1
]}

Mohedano, M. ^{[1
]}

Casajus, P. ^{[1
]}

Paucar, K. ^{[2
]}

Garces, G. ^{[3
]}

机构：

[1] Univ Complutense Madrid, Fac Ciencias Fis, Dept Ciencia Mat, E-28040 Madrid, Spain

[2] Univ Nacl Ingn, Fac Ingn Quim & Text, Lima, Peru

[3] Ctr Nacl Invest Met CSIC, Madrid 28040, Spain

来源：

CORROSION SCIENCE | 2012年 / 55卷

关键词：

Magnesium; Polarization; Weight loss; Pitting corrosion; MECHANICAL-PROPERTIES; PURE MAGNESIUM; MICROSTRUCTURE; RESISTANCE; PROTECTION; NEODYMIUM; CHLORIDE; OXIDES;

D O I：

10.1016/j.corsci.2011.10.033

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The corrosion performance of AM50 and AZ91D alloys containing up to 1.5 wt.% Nd was investigated by electrochemical and gravimetric measurements in 3.5 wt.% NaCl at 22 degrees C. The alloys were characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and surface potential maps. In Nd-containing alloys, formation of Al2Nd and Al-Mn-Nd intermetallic compounds reduced the volume fraction and modified the morphology of the beta-Mg17Al12 phase. The addition of Nd improved the corrosion resistance of the alloys due to increased passivity of the surface film and suppression of micro-galvanic couples. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：301 / 312

页数：12

共 42 条

[21]

Effect of mischmetal on the corrosion properties of Mg-5Al alloy [J].

Nam, N. D. ;

Kim, W. C. ;

Kim, J. G. ;

Shin, K. S. ;

Jung, H. C. .

CORROSION SCIENCE, 2009, 51 (12) :2942-2949

[22]

Effect of RE elements on the microstructural evolution of as cast and SIMA processed Mg-4Al alloy [J].

Nayyeri, Mohammad Javad ;

Khomamizadeh, Farzad .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (05) :1567-1572

[23]

Effect of combinative addition of strontium and rare earth elements on corrosion resistance of AZ91D magnesium alloy [J].

Niu Jie-xin ;

Chen Qiu-rong ;

Xu Nai-xin ;

Wei Zhong-ling .

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, 2008, 18 (05) :1058-1064

[24]

Morphology and structure of water-formed oxides on ternary MgAl alloys [J].

Nordlien, JH ;

Nisancioglu, K ;

Ono, S ;

Masuko, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1997, 144 (02) :461-466

[25]

Okamoto H., 1992, ALLOY PHASE DIAGRAMS, P331

[26]

Influence of microstructure and composition on the corrosion behaviour of Mg/Al alloys in chloride media [J].

Pardo, A. ;

Merino, M. C. ;

Coy, A. E. ;

Viejo, F. ;

Arrabal, R. ;

Feliu, S., Jr. .

ELECTROCHIMICA ACTA, 2008, 53 (27) :7890-7902

[27]

Corrosion behaviour of magnesium/aluminium alloys in 3.5 wt.% NaCl [J].

Pardo, A. ;

Merino, M. C. ;

Coy, A. E. ;

Arrabal, R. ;

Viejo, F. ;

Matykina, E. .

CORROSION SCIENCE, 2008, 50 (03) :823-834

[28]

Microstructure of a pressure die cast magnesium-4wt.% aluminium alloy modified with rare earth additions [J].

Pettersen, G ;

Westengen, H ;

Hoier, R ;

Lohne, O .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1996, 207 (01) :115-120

[29]

Schumann S, 2006, MAGNESIUM TECHNOLOGY: METALLURGY, DESIGN DATA, APPLICATIONS, P499

[30]

Measurement of the corrosion rate of magnesium alloys using Tafel extrapolation [J].

Shi, Zhiming ;

Liu, Ming ;

Atrens, Andrej .

CORROSION SCIENCE, 2010, 52 (02) :579-588

← 1 2 3 4 5 →