Characterization of rare-earth conversion films formed on the AZ31 magnesium alloy and its relation with corrosion protection

被引：238
|
作者：
Montemor, M. F.
Simoes, A. M.
Carmezim, M. J.
机构：
[1] Univ Tecn Lisboa, Inst Super Tecn, ICEMS, P-1049001 Lisbon, Portugal
[2] Inst Politecn Setubal, ESTSetubal, P-2910 Setubal, Portugal
来源：
APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 16期
关键词：
magnesium; cerium; lanthanum; XPS; AES; corrosion;
D O I：
10.1016/j.apsusc.2007.02.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two pre-treatments were studied for AZ31 Mg alloy substrates, consisting of immersion in cerium nitrate and lanthanum nitrate solutions for various immersion times. The surface composition was investigated by X-ray photoelectron spectroscopy and Auger electron spectroscopy that revealed the presence of a surface film containing the rare-earth cation, with a composition which was time dependent in the case of the cerium pretreatment. The corrosion behaviour of the pre-treated substrates in 0.005 M NaCl solutions was assessed by potentiodynamic polarization, open circuit potential monitoring and the scanning vibrating electrode technique (SVET). The electrochemical results show that the pre-treatments reduced the corrosion activity of the AZ31 Mg alloy substrates in the presence of chloride ions. The corrosion protection efficiency is dependent on the treatment time. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：6922 / 6931
页数：10
相关论文
共 50 条
  • [21] Corrosion protection of AZ31 magnesium alloy by silane film of partly hydrolysed BTESPT
    Chen, M. -A.
    Huang, R.
    Lu, X. -B.
    CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2011, 46 (06) : 712 - 718
  • [22] Corrosion protection of magnesium alloy AZ31 by coating with poly(ether imides) (PEI)
    Scharnagl, N.
    Blawert, C.
    Dietzel, W.
    SURFACE & COATINGS TECHNOLOGY, 2009, 203 (10-11): : 1423 - 1428
  • [23] Chitosan coatings crosslinked with genipin for corrosion protection of AZ31 magnesium alloy sheets
    Pozzo, Ludmila de Y.
    da Conceicao, Thiago F.
    Spinelli, Almir
    Scharnagl, Nico
    Pires, Alfredo T. N.
    CARBOHYDRATE POLYMERS, 2018, 181 : 71 - 77
  • [24] Hot deformation behavior of an extruded AZ31 alloy doped with rare-earth elements
    Sheikhani, A.
    Roumina, R.
    Mahmudi, R.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 852
  • [25] Conversion coating on magnesium alloy sheet (AZ31) by vanillic acid treatment: Preparation, characterization and corrosion behavior
    Abatti, Guilherme Pazini
    Nunes Pires, Alfredo T.
    Spinelli, Almir
    Scharnagl, Nico
    da Conceicao, Thiago F.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 738 : 224 - 232
  • [26] Effects of rare-earth elements and Ca additions on the microstructure and mechanical properties of AZ31 magnesium alloy processed by ECAP
    Masoudpanah, S. M.
    Mahmudi, R.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 526 (1-2): : 22 - 30
  • [27] Effect of potassium fluoride on structure and corrosion resistance of plasma electrolytic oxidation films formed on AZ31 magnesium alloy
    Wang, Li
    Chen, Li
    Yan, Zongcheng
    Wang, Honglin
    Peng, Jiazhi
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 480 (02) : 469 - 474
  • [28] The Effect of Combined Corrosion Inhibitors on AZ31 Magnesium Alloy
    Wu, Fengjing
    Liu, Xiaojuan
    Xiao, Xin
    Au, Chak-Tong
    MATERIALS PERFORMANCE, 2016, 55 (05) : 42 - 46
  • [29] ELECTROCHEMICAL CORROSION OF MAGNESIUM ALLOY AZ31 WITH ADDITIVE LITHIUM
    Przondziono, J.
    Hadasik, E.
    Szala, J.
    ARCHIVES OF METALLURGY AND MATERIALS, 2017, 62 (04) : 2359 - 2363
  • [30] The surface, microstructure and corrosion of magnesium alloy AZ31 sheet
    Song, Guang-Ling
    Xu, ZhenQing
    ELECTROCHIMICA ACTA, 2010, 55 (13) : 4148 - 4161
12345