Influence of casting porosity on the corrosion behaviour of Mg0.1Si

被引：32
作者：
Cao, Fuyong [1 ,2 ]
Shi, Zhiming [1 ,2 ,3 ]
Song, Guang-Ling [1 ,4 ]
Liu, Ming [5 ]
Dargusch, Matthew S. [2 ,3 ]
Atrens, Andrej [1 ,2 ]
机构：
[1] Univ Queensland, Mat Engn, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia
[2] Univ Queensland, Queensland Ctr Adv Mat Proc & Mfg AMPAM, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Def Mat Technol Ctr, Brisbane, Qld 4072, Australia
[4] Oak Ridge Natl Lab, Corros Sci & Technol, Oak Ridge, TN 37831 USA
[5] GM China Sci Lab, Shanghai 201206, Peoples R China
来源：
CORROSION SCIENCE | 2015年 / 94卷
基金：
澳大利亚研究理事会;
关键词：
Magnesium; Polarisation; Weight loss; EIS; SEM; ENHANCED CATALYTIC-ACTIVITY; CHLORIDE-ION CONCENTRATION; HIGH-PURITY MAGNESIUM; MECHANICAL-PROPERTIES; PURE MAGNESIUM; MG; ALLOY; MICROSTRUCTURE; AZ91; DISSOLUTION;
D O I：
10.1016/j.corsci.2015.02.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of casting porosity on the corrosion behaviour of Mg0.1Si was investigated for immersion in 3.5% NaCl solution saturated with Mg(OH)(2). The corrosion behaviour was characterised using (i) hydrogen evolution, (ii) weight loss, (iii) cathodic polarisation curves, (iv) electrochemical impedance spectroscopy (EIS), and (v) an examination of the corroded surfaces. Specimens with porosity had higher corrosion rates attributed to the corrosion associated with the pores activating significant corrosion over the whole specimen surface, wherein important aspects were (i) the breakdown of a partly protective surface film, and (ii) micro-galvanic acceleration of the corrosion by Fe-rich particles. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：255 / 269
页数：15
相关论文
共 70 条
  • [1] The in vivo and in vitro corrosion of high-purity magnesium and magnesium alloys WZ21 and AZ91
    Abidin, Nor Ishida Zainal
    Rolfe, Barbara
    Owen, Helen
    Malisano, Julian
    Martin, Darren
    Hofstetter, Joelle
    Uggowitzer, Peter J.
    Atrens, Andrej
    [J]. CORROSION SCIENCE, 2013, 75 : 354 - 366
  • [2] [Anonymous], UHLIG CORROSION HDB
  • [3] Stress corrosion cracking of nano/sub-micron E906 magnesium alloy
    Arnon, Amir
    Aghion, Eli
    [J]. ADVANCED ENGINEERING MATERIALS, 2008, 10 (08) : 742 - 745
  • [4] Atrens A, 2011, WOODHEAD PUBL MATER, P117
  • [5] Atrens A., 2015, ADV ENG MAT
  • [6] Possible dissolution pathways participating in the Mg corrosion reaction
    Atrens, Aleks D.
    Gentle, Ian
    Atrens, Andrej
    [J]. CORROSION SCIENCE, 2015, 92 : 173 - 181
  • [7] Advances in Mg corrosion and research suggestions
    Atrens, Andrej
    Song, Guang-Ling
    Cao, Fuyong
    Shi, Zhiming
    Bowen, Patrick K.
    [J]. JOURNAL OF MAGNESIUM AND ALLOYS, 2013, 1 (03) : 177 - 200
  • [8] THE SPECTRUM OF MAGNESIUM HYDRIDE
    BERNATH, PF
    BLACK, JH
    BRAULT, JW
    [J]. ASTROPHYSICAL JOURNAL, 1985, 298 (01) : 375 - 381
  • [9] Evidence for enhanced catalytic activity of magnesium arising from anodic dissolution
    Birbilis, N.
    King, A. D.
    Thomas, S.
    Frankel, G. S.
    Scully, J. R.
    [J]. ELECTROCHIMICA ACTA, 2014, 132 : 277 - 283
  • [10] Poisoning the corrosion of magnesium
    Birbilis, N.
    Williams, G.
    Gusieva, K.
    Samaniego, A.
    Gibson, M. A.
    McMurray, H. N.
    [J]. ELECTROCHEMISTRY COMMUNICATIONS, 2013, 34 : 295 - 298
1234567