Anodizing of pure magnesium in KOH-aluminate solutions under sparking

被引：163
|
作者：
Khaselev, O [1 ]
Weiss, D
Yahalom, J
机构：
[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel
[2] Dead Sea Work Ltd, IL-84100 Beer Sheva, Israel
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1999年 / 146卷 / 05期
关键词：
D O I：
10.1149/1.1391838
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Anodizing of magnesium was studied in solutions containing 3 M KOH + 0.6 M KF + 0.21 M Na3PO4, with and without addition of 0.4 M and 1.1 M of aluminate. At constant applied current, the process occurs in two stages. First, the voltage rises linear ly until an initial breakdown occurs. A thin and compact oxide film is formed at this stage. In the second stage an intense continuous spark is maintained on the metal surface. A thick oxide film is formed at the site of sparking. The formation of the film is accompanied by voltage oscillation and gas evolution. The anodic films formed under continuous breakdown conditions are rough and porous and enriched in aluminum. Anodic films formed in a bath containing 1.1 M aluminate at 15 mA/cm(2) are composed of a single oxide phase MgAl2O4 spinel. (C) 1999 The Electrochemical Society. S0013-4651(98)09-036-3. All rights reserved.
引用
收藏
页码：1757 / 1761
页数：5
相关论文
共 50 条
  • [1] Structure and composition of anodic films formed on binary Mg-Al alloys in KOH-aluminate solutions under continuous sparking
    Khaselev, O
    Weiss, D
    Yahalom, J
    CORROSION SCIENCE, 2001, 43 (07) : 1295 - 1307
  • [2] The anodic behavior of binary Mg-Al alloys in KOH-aluminate solutions
    Khaselev, O
    Yahalom, J
    CORROSION SCIENCE, 1998, 40 (07) : 1149 - 1160
  • [3] Anodizing of magnesium alloy AZ31 in alkaline solutions with silicate under continuous sparking
    Chai, Liyuan
    Yu, Xia
    Yang, Zhihui
    Wang, Yunyan
    Okido, Masazumi
    CORROSION SCIENCE, 2008, 50 (12) : 3274 - 3279
  • [4] Anodizing steel in KOH and NaOH solutions
    Burleigh, T. D.
    Dotson, T. C.
    Dotson, K. T.
    Gabay, S. J.
    Sloan, T. B.
    Ferrell, S. G.
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (10) : C579 - C586
  • [5] PREPARATION OF MAGNESIUM ALUMINATE FROM SODIUM ALUMINATE SOLUTIONS AND MAGNESIUM SALTS
    GALIMOV, GG
    SELIVERSTOV, NF
    RYABIN, VA
    ZHITKOVA, TN
    BERG, NA
    KALITINA, LN
    LEONTEVA, IA
    SAVCHENKO, YI
    INORGANIC MATERIALS, 1986, 22 (04) : 559 - 563
  • [6] Anodizing under sparking of AZ31B magnesium alloy in Na3PO 4 electrolyte
    Asoh H.
    Matsuoka S.
    Ayama H.S.
    Ono S.
    Keikinzoku/Journal of Japan Institute of Light Metals, 2010, 60 (11): : 608 - 614
  • [7] Synthesis and characterization of pure nanocrystalline magnesium aluminate spinel powder
    Tavangarian, F.
    Emadi, R.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 489 (02) : 600 - 604
  • [8] Constant voltage anodizing of Mg-Al alloys in KOH-Al(OH)3 solutions
    Technion-Israel Inst of Technology, Haifa, Israel
    J Electrochem Soc, 1 (190-193):
  • [9] Constant voltage anodizing of Mg-Al alloys in KOH-Al(OH)3 solutions
    Khaselev, O
    Yahalom, J
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (01) : 190 - 193
  • [10] Study on the anodizing of AZ31 magnesium alloys in alkaline borate solutions
    Wu, C. S.
    Zhang, Z.
    Cao, F. H.
    Zhang, L. J.
    Zhang, J. Q.
    Cao, C. N.
    APPLIED SURFACE SCIENCE, 2007, 253 (08) : 3893 - 3898
12345