Advertisement

Journal of Materials Science

, Volume 29, Issue 4, pp 965–972 | Cite as

Effect of annealing upon decomposition of electrodeposited iron-zinc alloy coatings

  • C. A. Drewien
  • A. R. Marder
Papers

Abstract

As-deposited electrodeposited iron-zinc alloy coatings containing η phase, decompose upon heating through a sequence of metastable phases. The h c p η phase transforms to b c c G, or Г-like phase via a rapid diffusional phase transformation in the vicinity of 150 °C. For bulk iron contents of 8–13 wt%, η transforms to 100% G phase. The G phase subsequently transforms at 240 °C to ς′ phase, which in turn transforms to δ or Г1 phase near 300 °C by depletion of iron from the surrounding matrix. The decomposition process may be driven by supersaturation of η with iron.

Keywords

Iron Polymer Phase Transformation Material Processing Supersaturation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    T. Adaniya, Y. Hara, M. Sagiyama, T. Watanabe and T. Honma, in “Surface Modification and Coatings”, edited by R. D. Sisson (ASM, Metals Park, OH, 1986) p. 1.Google Scholar
  2. 2.
    T. Hara, T. Adaniya, M. Sagiyama, T. Honma, A. Tonouchi, T. Watanabe and M. Ohmura, Trans. ISIJ 23 (1983) 954.CrossRefGoogle Scholar
  3. 3.
    T. Adaniya, Y. Hara, M. Sagiyama, T. Honma and T. Watanabe, Plating Surface Finishing 72 (1985) 52.Google Scholar
  4. 4.
    S. Wakano, A. Sakoda, M. Nishihara, T. Kurimoto and Y. Hoboh, in “Surface Modifications and Coatings”, edited by R. D. Sisson (ASM, Metals Park, OH 1986) p. 23.Google Scholar
  5. 5.
    K. Kondo, S. Hinotani and Y. Ohmori, J. Appl. Electrochem. 18 (1988) 154.CrossRefGoogle Scholar
  6. 6.
    Y. Shima, M. Terasaka, K. Nakaoka, T. Hara and T. Honma, Tetsu to Hagane 72 (1986) 66.CrossRefGoogle Scholar
  7. 7.
    M. Kimoto, S. Wakano and A. Shibuya, ibid. 72 (1986) 73.CrossRefGoogle Scholar
  8. 8.
    M. Gu, M. R. Notis and A. R. Marder, in “Proceedings of the International Conference on Zinc and Zinc Alloy Coated Steel Sheet”, edited by Y. Hisamatsu, Galvatech '89, Keidanren Kaikan, Tokyo, Japan 5–7 September (1989), pp. 462–77.Google Scholar
  9. 9.
    T. Watanabe, M. Ohmura, T. Honma and T. Adaniya, SAE Techn. Paper 820424, Warrendale, PA (1982).Google Scholar
  10. 10.
    M. Gu and A. R. Marder, Powder Diff. 6 (2) (1991) 89.CrossRefGoogle Scholar
  11. 11.
    Y. Tokunga and M. Yamada, Trans. ISIJ (1984) 97.Google Scholar
  12. 12.
    M. Gu, Ph D dissertation, Lehigh University, Bethlehem, PA (1989)Google Scholar
  13. 13.
    W. R. Johnson and L. E. Pfister, US Pat. 4540472, Official Gazette (1985) 768.Google Scholar
  14. 14.
    M. Onishi, Y. Wakamatsu and H. Miura Trans. JIM 15 (1974) 331.CrossRefGoogle Scholar

Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • C. A. Drewien
    • 1
  • A. R. Marder
    • 1
  1. 1.Materials Science and Engineering DepartmentLehigh UniversityBethlehemUSA

Personalised recommendations