The effect of surface pre-treatments on corrosion behavior of cerium-based conversion coatings on Al 7075-T6

被引：23
|
作者：
Danaee, I. [1 ]
Zamanizadeh, H. R. [1 ]
Fallahi, M. [1 ]
Lotfi, B. [2 ]
机构：
[1] Petr Univ Technol, Abadan Fac Petr Engn, Abadan, Iran
[2] Shahid Chamran Univ, Dept Mat Sci & Engn, Ahvaz, Iran
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2014年 / 65卷 / 08期
关键词：
ALUMINUM; OXIDE; DEPOSITION; RESISTANCE; 2024-T3; NUCLEATION; INHIBITION; PARAMETERS; LAYERS;
D O I：
10.1002/maco.201307147
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cerium-based conversion coatings were deposited on Al 7075-T6 and characterized to determine the effect of different surface pre-treatments on the corrosion rate and surface morphology. The methods of potentiodynamic polarization and scanning electron microscopy were employed. The experimental results suggest that cerium-based conversion coating is corrosion resistant in NaCl solution. Corrosion current decreased with alkaline cleaning and acid activation of aluminum surface before cerium oxide deposition. Alkaline cleaning and activation improved deposition of cerium-based conversion coatings compared to only alkaline cleaning. Analysis of the surface morphology of the coatings showed that the coatings deposited on the alkaline cleaning and acid treated panels exhibited lower visible cracks compared to coatings on only alkaline cleaned panels.
引用
收藏
页码：815 / 819
页数：5
相关论文
共 50 条
  • [41] Corrosion resistance of cerium-based chemical conversion coatings on AA5083 aluminium alloy
    Dabalà, M
    Ramous, E
    Magrini, M
    MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION, 2004, 55 (05): : 381 - 386
  • [42] Ratcheting strain and its effect on low cycle fatigue behavior of Al 7075-T6 alloy
    Sreenivasan, S.
    Mishra, Srimant Kumar
    Dutta, Krishna
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 698 : 46 - 53
  • [43] Fatigue Behavior of Al 7075-T6 Plates Repaired with Composite Patch under the Effect of Overload
    Bachir Bouiadjra, Bel Abbes
    Mohammed, S. M. A. K.
    Benyahia, Faycal
    Albedah, Abdulmohsen
    METALS, 2021, 11 (12)
  • [44] Electrochemical investigation on the hydrogen permeation behavior of 7075-T6 Al alloy and its influence on stress corrosion cracking
    Zheng, Chuan-bo
    Yan, Bing-hao
    Zhang, Ke
    Yi, Guo
    INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2015, 22 (07) : 729 - 737
  • [45] Electrochemical investigation on the hydrogen permeation behavior of 7075-T6 Al alloy and its influence on stress corrosion cracking
    Chuan-bo Zheng
    Bing-hao Yan
    Ke Zhang
    Guo Yi
    InternationalJournalofMineralsMetallurgyandMaterials, 2015, 22 (07) : 729 - 737
  • [46] Electrochemical investigation on the hydrogen permeation behavior of 7075-T6 Al alloy and its influence on stress corrosion cracking
    Chuan-bo Zheng
    Bing-hao Yan
    Ke Zhang
    Guo Yi
    International Journal of Minerals, Metallurgy, and Materials, 2015, 22 : 729 - 737
  • [47] Microstructure and Mechanical Behavior of Al 7075-T6 Subjected to Shallow Cryogenic Treatment
    Mohan, K.
    Suresh, J. A.
    Ramu, Palaniappan
    Jayaganthan, R.
    JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2016, 25 (06) : 2185 - 2194
  • [48] Influence of retrogression and reaging treatments on the strength and stress corrosion resistance of aluminium alloy 7075-T6
    Park, J.K.
    Materials Science and Engineering A, 1988, A103 (02): : 223 - 231
  • [49] Microstructure and Mechanical Behavior of Al 7075-T6 Subjected to Shallow Cryogenic Treatment
    K. Mohan
    J. A. Suresh
    Palaniappan Ramu
    R. Jayaganthan
    Journal of Materials Engineering and Performance, 2016, 25 : 2185 - 2194
  • [50] THE INFLUENCE OF GALVANIC CURRENT ON CERIUM-BASED CONVERSION COATINGS ON MG, AL, AND GALVANIZED STEEL COUPLES
    Maddela, Surender
    O'Keefe, Matthew J.
    Wang, Yar-Ming
    MAGNESIUM TECHNOLOGY 2012, 2012, : 235 - 239
12345