Electrochemical behaviour of the β-phase intermetallic (Mg2Al3) as a function of pH as relevant to corrosion of aluminium-magnesium alloys

被引：130

作者：

Lyndon, J. A. ^{[1
]}

Gupta, R. K. ^{[1
]}

Gibson, M. A. ^{[2
]}

Birbilis, N. ^{[1
]}

机构：

[1] Monash Univ, Dept Mat Engn, ARC Ctr Excellence Design Light Met, Clayton, Vic 3800, Australia

[2] CSIRO Div Proc Sci & Engn, Clayton South MDC, Clayton, Vic 3169, Australia

来源：

CORROSION SCIENCE | 2013年 / 70卷

关键词：

Aluminium; Magnesium; Intermetallics; Polarisation; MG; CRACKING;

D O I：

10.1016/j.corsci.2012.12.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The intermetallic phase Mg2Al3 was synthesised in bulk form to permit electrochemical characterisation. Polarisation testing was performed in 0.01 M NaCl across the pH range of 2-10, which is relevant to instances where the Mg2Al3 phase populates Al-alloys (i.e. 5xxx series). Mg2Al3 is capable of sustaining high dissolution rates, but this is pH dependent. As such, the range of currents sustained over the E-pH space are reported and are of general use for reconciling localised corrosion or corrosion model feedstock in other works. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：290 / 293

页数：4

共 22 条

[1] Investigation and discussion of characteristics for intermetallic phases common to aluminum alloys as a function of solution pH [J].

Birbilis, N. ;

Buchheit, R. G. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2008, 155 (03) :C117-C126

[2] Electrochemical characteristics of intermetallic phases in aluminum alloys - An experimental survey and discussion [J].

Birbilis, N ;

Buchheit, RG .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (04) :B140-B151

[3] Quantification of Sensitization in AA5083-H131 via Imaging Ga-Embrittled Fracture Surfaces [J].

Birbilis, N. ;

Zhang, R. ;

Lim, M. L. C. ;

Gupta, R. K. ;

Davies, C. H. J. ;

Lynch, S. P. ;

Kelly, R. G. ;

Scully, J. R. .

CORROSION, 2013, 69 (04) :396-402

[4] A COMPILATION OF CORROSION POTENTIALS REPORTED FOR INTERMETALLIC PHASES IN ALUMINUM-ALLOYS [J].

BUCHHEIT, RG .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (11) :3994-3996

[5] The electrochemistry of intermetallic particles and localized corrosion in Al alloys [J].

Buchheit, RG ;

Boger, RK ;

Carroll, MC ;

Leard, RM ;

Paglia, C ;

Searles, JL .

JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2001, 53 (07) :29-+

[6]

Buczynski J., 2011, 220 ECS M

[7]

Bumiller E., 2011, Ph.D. diss

[8]

Bumiller E., 2011, 2011 DOD CORR C PALM

[9] EFFECT OF THERMAL AND THERMOMECHANICAL PROCESSING ON PROPERTIES OF AL-MG ALLOYS [J].

CONSERVA, M ;

LEONI, M .

METALLURGICAL TRANSACTIONS, 1975, 6 (01) :189-195

[10]

DAVIS JR, 1990, ASM HDB, V2, P29

← 1 2 3 →