Effect of the reinforced boron carbide particulate content of AA6061 alloy on formation of the passive film in seawater

被引：98
作者：
Katkar, V. A. [1 ]
Gunasekaran, G. [1 ]
Rao, A. G. [1 ]
Koli, P. M. [1 ]
机构：
[1] Naval Mat Res Lab, Thana 421506, India
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 09期
关键词：
Metal matrix composites; EIS; Polarisation; SEM; AFM; Passive films; POINT-DEFECT MODEL; METAL-MATRIX COMPOSITES; ANODIC OXIDE-FILMS; CORROSION BEHAVIOR; PITTING BEHAVIOR; ELECTROCHEMICAL-BEHAVIOR; ELECTRONIC-PROPERTIES; AA2024/SICP COMPOSITES; PIT NUCLEATION; ALUMINUM;
D O I：
10.1016/j.corsci.2011.04.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of boron carbide (B4C) reinforcement on the corrosion of AA6061 alloy was studied by investigating passive films formed in seawater. The higher passive current and its potential-dependence for these composites indicated formation of porous passive film. Electrochemical impedance spectroscopy (EIS) graph suggests that the alloy surface is partly or totally active. The formed passive film is n-type semiconductor junction in nature. The difference between corrosion potential (E-corr) and potential at zero charge (RC) suggests that the chloride ions responsible for film breakdown exist within the passive film. A suitable mechanism is proposed for the passive film breakdown. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2700 / 2712
页数：13
相关论文
共 66 条
  • [1] Influence of the degree of polishing of alloy AA 5083 on its behaviour against localised alkaline corrosion
    Aballe, A
    Bethencourt, M
    Botana, FJ
    Marcos, M
    Sánchez-Amaya, M
    [J]. CORROSION SCIENCE, 2004, 46 (08) : 1909 - 1920
  • [2] Influence of the cathodic intermetallics distribution on the reproducibility of the electrochemical measurements on AA5083 alloy in NaCl solutions
    Aballe, A
    Bethencourt, M
    Botana, FJ
    Cano, M
    Marcos, M
    [J]. CORROSION SCIENCE, 2003, 45 (01) : 161 - 180
  • [3] Localized alkaline corrosion of alloy AA5083 in neutral 3.5% NaCl solution
    Aballe, A
    Bethencourt, M
    Botana, FJ
    Cano, MJ
    Marcos, M
    [J]. CORROSION SCIENCE, 2001, 43 (09) : 1657 - 1674
  • [4] ABELLE A, 2000, P EURR 2000 LOND UK
  • [5] Mechanism of localized corrosion of aluminum-silicon carbide composites in a chloride containing environment
    Ahmad, Z
    Paulette, PT
    Aleem, BJA
    [J]. JOURNAL OF MATERIALS SCIENCE, 2000, 35 (10) : 2573 - 2579
  • [6] Degradation of aluminum metal matrix composites in salt water and its control
    Ahmad, Z
    Abdul A, BJ
    [J]. MATERIALS & DESIGN, 2002, 23 (02): : 173 - 180
  • [7] Effect of the final annealing of cold rolled stainless steels sheets on the electronic properties and pit nucleation resistance of passive films
    Amri, J.
    Souier, T.
    Malki, B.
    Baroux, B.
    [J]. CORROSION SCIENCE, 2008, 50 (02) : 431 - 435
  • [8] CHLORIDE-ION PENETRATION INTO OXIDE-FILMS ON ALUMINUM AUGER AND XPS STUDIES
    ATANASOSKA, LD
    DRAZIC, DM
    DESPIC, AR
    ZALAR, A
    [J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1985, 182 (01) : 179 - 186
  • [9] EFFECT OF REINFORCEMENT ON THE PITTING BEHAVIOR OF ALUMINUM-BASE METAL MATRIX COMPOSITES
    AYLOR, DM
    MORAN, PJ
    [J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1985, 132 (06) : 1277 - 1281
  • [10] Bockris J. O. M., 2000, MODERN ELECTROCHEMIS, DOI DOI 10.1016/j.cattod.2012.08.013
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