Microstructual characterization of sputtered Pt-Ir coatings on Ni-base single crystal superalloy

Aya Suzuki, Masanori Harada, Yingna Wu, Hideyuki Murakami

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Characterization of Pt-Ir alloy coatings on a Ni-base single crystal superalloy was carried out. Pt-Ir alloys with varied composition were sputter-deposited on TMS-82+, which were then subjected to annealing and Al-pack cementation treatments. It was found that all the as-deposited films consisted of Pt-Ir solid solutioned fee single phase, while the annealing treatment at 1423 K for 1 h drastically changed the microstructure, depending on the composition of coated layers. On the other hand, concentration profiles of alloying elements were not drastically changed by the Al-pack cementation process. It was also revealed that Ir addition increases the surface hardness of all the as-deposited, annealed, and aluminized specimens.

Original languageEnglish
Pages (from-to)1760-1763
Number of pages4
JournalMaterials Transactions
Volume46
Issue number8
DOIs
Publication statusPublished - 2005 Aug 1
Externally publishedYes

Keywords

  • Aluminizing
  • Bond coat
  • Ni-base superalloy
  • Platinum-iridium

ASJC Scopus subject areas

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

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