Chromate and Chromate–Phosphate Conversion Coatings on Aluminium

被引：0
|
作者：
M. Oki
T. K. Oki
E. Charles
机构：
[1] National Open University of Nigeria,School of Science and Technology
[2] University of Port Harcourt,Institute of Petroleum Studies
[3] Greenfield-Oaks Limited,Technical Department
[4] Niger Delta University,Department of mechanical Engineering
来源：
Arabian Journal for Science and Engineering | 2012年 / 37卷
关键词：
Chromate; Phosphate; Conversion coatings; Thin films; Aerospace; Adhesion;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Investigations of chromate and chromate–phosphate conversion coatings on aluminium using SIMS and AES techniques revealed that they are composed of hydrated chromium oxide/hydroxide and chromium phosphate respectively. These compositions are consistent with the electrochemical mechanism for conversion coating formation on aluminium. Enrichment of the outermost regions of the coatings with coating solution species suggests the gradual migration of these species under a concentration gradient towards the metal/coating interface where coating formation and growth consume such species.
引用
收藏
页码：59 / 64
页数：5
相关论文
共 50 条
  • [21] Effect of surface pretreatments on chromate conversion coatings
    Chidambaram, D
    Clayton, CR
    Halada, GP
    Kearns, JR
    STATE-OF-THE ART APPLICATION OF SURFACE AND INTERFACE ANALYSIS METHODS TO ENVIRONMENTAL MATERIALS INTERACTIONS: IN HONOR OF JAMES E. CASTLE'S 65TH YEAR, PROCEEDINGS, 2001, 2001 (05): : 240 - 250
  • [22] BLACK CHROMATE CONVERSION COATINGS ON ELECTRODEPOSITED ZINC
    NIKOLOVA, M
    HARIZANOV, O
    STEFTCHEV, P
    KRISTEV, I
    RASHKOV, S
    SURFACE & COATINGS TECHNOLOGY, 1988, 34 (04): : 501 - 514
  • [23] Chromate conversion coatings on 2024 Al alloy
    Hughes, AE
    Taylor, RJ
    Hinton, BRW
    SURFACE AND INTERFACE ANALYSIS, 1997, 25 (04) : 223 - 234
  • [24] Chromate-free conversion coatings for aluminum
    Bibber, JW
    PLATING AND SURFACE FINISHING, 2003, 90 (03): : 40 - 43
  • [25] Investigation of the chromate conversion coating on Alclad 2024 aluminium alloy: effect of the pH of the chromate bath
    Campestrini, P
    van Westing, EPM
    Hovestad, A
    de Wit, JHW
    ELECTROCHIMICA ACTA, 2002, 47 (07) : 1097 - 1113
  • [26] Studies on the influence of hexadecylamine on chromate phosphate coating on aluminium
    Narayanan, T.S.N.Sankara
    Subbaiyan, M.
    Transactions of the Institute of Metal Finishing, 1993, 71 (pt 2): : 52 - 54
  • [27] Influence of copper on chromate conversion coating of aluminium alloys
    Liu, Y
    Skeldon, P
    Thompson, GE
    Hashimoto, T
    Smith, CJE
    TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, 2005, 83 (03): : 125 - 129
  • [28] Effects of chromate and chromate conversion coatings on corrosion of aluminum alloy 2024-T3
    Zhao, J
    Xia, L
    Sehgal, A
    Lu, D
    McCreery, RL
    Frankel, GS
    SURFACE & COATINGS TECHNOLOGY, 2001, 140 (01): : 51 - 57
  • [29] CHROMIUM VALENCE STATE IN CHROMATE CONVERSION COATINGS ON ALUMINUM
    WAN, J
    THOMPSON, GE
    LU, K
    SMITH, CJE
    PHYSICA B, 1995, 208 (1-4): : 511 - 512
  • [30] SINGLE DIP BLUE-CHROMATE-CONVERSION-COATINGS
    WILKOWSKI, W
    GALVANOTECHNIK, 1978, 69 (06): : 512 - 514
12345