Investigation of plasma electrolytic oxidation processes of magnesium alloy MA2-1 under pulse polarisation modes

被引：67
作者：
Timoshenko, AV [1 ]
Magurova, YV [1 ]
机构：
[1] Technol Univ, Moscow Steel & Alloys Inst, Moscow 119991, Russia
来源：
SURFACE & COATINGS TECHNOLOGY | 2005年 / 199卷 / 2-3期
关键词：
anodizing; magnesium; oxide film; plasma;
D O I：
10.1016/j.surfcoat.2004.09.036
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Process of plasma electrolytic oxidation (PEO) of magnesium alloy MA2-1 in an electrolyte containing sodium hydroxide and sodium tripolyphosphate was investigated. The use of pulse shape of polarising current in both positive and negative semi-periods significantly improved efficiency of coating deposition, which is connected with increase in number of microdischarges on the article surface and intensification of plasma chemical synthesis processes. Optimal combination of interval duration before the electric pulse and duration of the pulse itself appeared to be 6 ms and 4 ms, respectively, for positive polarising pulses and 2 ms and 6 ins, respectively, for negative ones. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码：135 / 140
页数：6
相关论文
共 27 条
  • [11] 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
    [J]. CORROSION SCIENCE, 2001, 43 (07) : 1295 - 1307
  • [12] KIMURA C, 1968, JPN J APPL PHYS, V7, P254
  • [13] KIMURA C, 1966, JPN J APPL PHYS, V5, P136
  • [14] PROCESS CHARACTERISTICS AND PARAMETERS OF ANODIC-OXIDATION BY SPARK DISCHARGE (ANOF)
    KRYSMANN, W
    KURZE, P
    DITTRICH, KH
    SCHNEIDER, HG
    [J]. CRYSTAL RESEARCH AND TECHNOLOGY, 1984, 19 (07) : 973 - 979
  • [15] Popova N. E., 1999, P ALL RUSS C EL MEMB, P68
  • [16] Ross R.B., 1988, HDB METAL TREATMENTS
  • [17] RUDNEV VS, 2001, ZASHCH MET, V37, P79
  • [18] Snezhko L. A., 1980, ZASHCH MET, V16, P365
  • [19] TIMONOVA MA, 1977, PROTECTION MAGNESIUM
  • [20] Timoshenko A.V, 1995, ZASHCH MET, V31, P523
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