Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91

被引：88
作者：
Arrabal, R. [1 ]
Mingo, B. [1 ]
Pardo, A. [1 ]
Matykina, E. [1 ]
Mohedano, M. [2 ]
Merino, M. C. [1 ]
Rivas, A. [3 ]
Maroto, A. [3 ]
机构：
[1] Univ Complutense, Fac Ciencias Quim, Dept Ciencia Mat, E-28040 Madrid, Spain
[2] Helmholtz Zentrum Geesthacht, Magnesium Innovat Ctr, Inst Mat Res, D-21502 Geesthacht, Germany
[3] Fdn CIDAUT, Dept Aleac Ligeras, Valladolid 47151, Spain
来源：
CORROSION SCIENCE | 2015年 / 97卷
关键词：
A; Magnesium; Alloy; B; AFM; C. Atmospheric corrosion; MECHANICAL-PROPERTIES; BEHAVIOR; RESISTANCE; NEODYMIUM; AM50; IMPROVEMENT; ALUMINUM; GD;
D O I：
10.1016/j.corsci.2015.04.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of Nd on the atmospheric corrosion performance of AZ91 alloy was evaluated as per PV1210 standard. Additionally, immersion and electrochemical measurements were carried out. The beneficial effect of Nd is associated with: (i) suppressed galvanic corrosion between alpha-Mg and secondary phases, (ii) refined beta-phase morphology and (iii) increased proportion of carbonates in the outer surface layer. In case of atmospheric corrosion, the role of beta-phase is the least important factor out of the three. The optimum Nd content is 0.5 wt.%. Further additions do not improve significantly the corrosion performance. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：38 / 48
页数：11
相关论文
共 34 条
  • [11] Corrosion product formation during NaCl induced atmospheric corrosion of magnesium alloy AZ91D
    Jonsson, Martin
    Persson, Dan
    Thierry, Dominique
    [J]. CORROSION SCIENCE, 2007, 49 (03) : 1540 - 1558
  • [12] Atmospheric corrosion of two field-exposed AZ31B magnesium alloys with different grain size
    Liao, Jinsun
    Hotta, Makoto
    Motoda, Shin-ichi
    Shinohara, Tadashi
    [J]. CORROSION SCIENCE, 2013, 71 : 53 - 61
  • [13] Corrosion of magnesium in humid air
    Lindström, R
    Johansson, LG
    Thompson, GE
    Skeldon, P
    Svensson, JE
    [J]. CORROSION SCIENCE, 2004, 46 (05) : 1141 - 1158
  • [14] The influence of carbon dioxide on the atmospheric corrosion of some magnesium alloys in the presence of NaCl
    Lindström, R
    Svensson, JE
    Johansson, LG
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (04) : B103 - B107
  • [15] The influence of yttrium (Y) on the corrosion of Mg-Y binary alloys
    Liu, Ming
    Schmutz, Patrik
    Uggowitzer, Peter J.
    Song, Guangling
    Atrens, Andrej
    [J]. CORROSION SCIENCE, 2010, 52 (11) : 3687 - 3701
  • [16] Effect of rare earth element Ce and La on corrosion behavior of AM60 magnesium alloy
    Liu, Wenjuan
    Cao, Fahe
    Chang, Linrong
    Zhang, Zhao
    Zhang, Jianqing
    [J]. CORROSION SCIENCE, 2009, 51 (06) : 1334 - 1343
  • [17] Corrosion properties and corrosion evolution of as-cast AZ91 alloy with rare earth yttrium
    Luo, T. J.
    Yang, Y. S.
    [J]. MATERIALS & DESIGN, 2011, 32 (10): : 5043 - 5048
  • [18] Influence of chloride ion concentration and temperature on the corrosion of Mg-Al alloys in salt fog
    Merino, M. C.
    Pardo, A.
    Arrabal, R.
    Merino, S.
    Casajus, P.
    Mohedano, M.
    [J]. CORROSION SCIENCE, 2010, 52 (05) : 1696 - 1704
  • [19] Mohedano M., 2011, TRATAMIENTOS SUPERFI, P345
  • [20] Corrosion behaviour of magnesium/aluminium alloys in 3.5 wt.% NaCl
    Pardo, A.
    Merino, M. C.
    Coy, A. E.
    Arrabal, R.
    Viejo, F.
    Matykina, E.
    [J]. CORROSION SCIENCE, 2008, 50 (03) : 823 - 834
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