Development of Re-based diffusion barrier coatings on nickel based superalloys

T. Narita, K. Z. Thosin, L. Fengqun, S. Hayashi, Hideyuki Murakami, B. Gleeson, D. Young

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A diffusion barrier type coating with a duplex layer structure, an inner σ-(Re, W, Cr, Ni) as a diffusion barrier and outer Ni-aluminide as an Al reservoir, was formed on a Nickel based, single crystal, superalloy (TMS-82 +) and on Hastelloy X. Oxidation properties of both the alloys with or without the diffusion barrier coating were investigated in air under thermal cycling between room temperature and 1423 K for up to 360 ks. The inner σ layer with a composition (at%) of (35-40) Re, (15-20) W, (15-25) Cr and (15-25) Ni was produced by electrodeposition of Ni-70Re and NJ-20W films from aqueous solutions followed by Cr-pack cementation at temperatures between 1473 and 1573 K, and the outer Ni-aluminides of β-(Ni,Cr)Al + γ′-(Ni,Cr) 3Al was formed by electrodeposition of a Ni film, followed by Al pack cementation. After the 360 ks oxidation it was found that the structure and composition of both σ layer and alloy substrate were retained with little change. Furthermore, there was little Al in the σ layer. It could be concluded that the Re-based alloys such as σ (Re(W),Cr,Ni) are very promising candidates as a diffusion barrier between the outer Al-reservoir layer and alloy substrate at temperature of 1423 K. It was found that the Re(W)-Cr-Ni acts as a diffusion barrier for both inward diffusion of Al and outward diffusion of alloying elements in the alloy substrate.

Original languageEnglish
Pages (from-to)923-929
Number of pages7
JournalMaterials and Corrosion
Volume56
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1
Externally publishedYes

Fingerprint

Diffusion barriers
Nickel
Superalloys
coating
nickel
Coatings
Electrodeposition
Substrates
cementation
substrate
Oxidation
Thermal cycling
Alloying elements
Chemical analysis
Temperature
oxidation
duplex
temperature
Single crystals
aqueous solution

ASJC Scopus subject areas

  • Environmental Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Narita, T., Thosin, K. Z., Fengqun, L., Hayashi, S., Murakami, H., Gleeson, B., & Young, D. (2005). Development of Re-based diffusion barrier coatings on nickel based superalloys. Materials and Corrosion, 56(12), 923-929. https://doi.org/10.1002/maco.200503924

Development of Re-based diffusion barrier coatings on nickel based superalloys. / Narita, T.; Thosin, K. Z.; Fengqun, L.; Hayashi, S.; Murakami, Hideyuki; Gleeson, B.; Young, D.

In: Materials and Corrosion, Vol. 56, No. 12, 01.12.2005, p. 923-929.

Research output: Contribution to journalArticle

Narita, T, Thosin, KZ, Fengqun, L, Hayashi, S, Murakami, H, Gleeson, B & Young, D 2005, 'Development of Re-based diffusion barrier coatings on nickel based superalloys', Materials and Corrosion, vol. 56, no. 12, pp. 923-929. https://doi.org/10.1002/maco.200503924
Narita, T. ; Thosin, K. Z. ; Fengqun, L. ; Hayashi, S. ; Murakami, Hideyuki ; Gleeson, B. ; Young, D. / Development of Re-based diffusion barrier coatings on nickel based superalloys. In: Materials and Corrosion. 2005 ; Vol. 56, No. 12. pp. 923-929.
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