Interdiffusion behavior of electroplated platinum-iridium alloys on nickel-base single crystal superalloy TMS-82+

Y. N. Wu, A. Suzuki, Hideyuki Murakami, S. Kuroda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the present study, platinum-iridium alloys (Ir = 15.8, 27.3, 36.1, 100at.%) were electroplated on a nickel-base single crystal superalloy TMS-82+ followed by a diffusion treatment at 1373K for 1 h. Interdiffusion behavior between the Pt-Ir films and substrates was investigated in terms of chemical composition, phase constitution and morphology. X-ray analysis revealed that annealed specimens consisted of several fee solid solutioned phases with various lattice parameters, together with ordered intermetallic compounds (Ll 2-(Pt,Ni)3Al and B2-(Ir,Ni)Al), due to the inward diffusion of Pt and Ir from the electrodeposited films to the superalloy substrates, and the outward diffusion of solute elements (Ni, Al, Cr, Co) in the superalloy substrates into the films during annealing. The depth concentration analysis indicated that the Pt-36.1Ir film effectively retarded the outward diffusion of solute elements, especially nickel, from the substrate.

Original languageEnglish
Title of host publicationHigh-Temperature Oxidation and Corrosion 2005 - Proceedings of the International Symposium on High-Temperature Oxidation and Corrosion 2005
Pages293-300
Number of pages8
Publication statusPublished - 2006 Dec 1
Externally publishedYes
EventInternational Symposium on High-Temperature Oxidation and Corrosion, ISHOC-05 - Nara, Japan
Duration: 2005 Nov 302005 Dec 2

Publication series

NameMaterials Science Forum
Volume522-523
ISSN (Print)0255-5476

Other

OtherInternational Symposium on High-Temperature Oxidation and Corrosion, ISHOC-05
CountryJapan
CityNara
Period05/11/3005/12/2

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Keywords

  • Electroplating
  • Interdiffusion
  • Pt-Ir

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Wu, Y. N., Suzuki, A., Murakami, H., & Kuroda, S. (2006). Interdiffusion behavior of electroplated platinum-iridium alloys on nickel-base single crystal superalloy TMS-82+. In High-Temperature Oxidation and Corrosion 2005 - Proceedings of the International Symposium on High-Temperature Oxidation and Corrosion 2005 (pp. 293-300). (Materials Science Forum; Vol. 522-523).