Cyclic-Oxidation Behavior of Multilayered Pt/Ru-Modified Aluminide Coating

Yingxue Song, Hideyuki Murakami, Chungen Zhou

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Multilayered Pt/Ru modified aluminide coating for thermal barrier coating (TBC) systems has been investigated. 2 μm Pt+2 μm Ru+2 μm Pt was first deposited on nickel-base superalloy DZ125 by electrodeposition, and then the coating was treated by annealing and a conventional pack-cementation aluminizing process. The cyclic oxidation tests were carried out at 1423 K in air. It was found that the thermal cyclic oxidation resistance of Pt/Ru-modified aluminide coating was comparable to that of Pt-modified aluminide coating, which was much better than simply aluminized DZ125. The addition of Ru to Pt-modified aluminide coating increased the resistance to rumpling. The microstructures and phase constitutions of the coating before and after oxidation were investigated.

Original languageEnglish
Pages (from-to)280-288
Number of pages9
JournalJournal of Materials Science and Technology
Volume27
Issue number3
DOIs
Publication statusPublished - 2011 Apr 22
Externally publishedYes

Keywords

  • Aluminide coating
  • Cyclic oxidation
  • Pt/Ru-modified

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Polymers and Plastics
  • Metals and Alloys
  • Materials Chemistry

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