Effect of Hf addition on oxidation properties of Pt-Ir modified aluminide coating

Akihiro Yamaguchi*, Hideyuki Murakami, Seiji Kuroda, Hachiro Imai

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

In the present study, the effect of Hf addition on oxidation kinetics of Pt-Ir modified aluminide coatings was investigated. Pt-15 at%Ir and Pt-15 at%Ir with trace amount of Hf films with 7-8 μm thick were deposited on a Ni-based single crystal superalloy TMS-82+ using magnetron sputtering, followed by a diffusion treatment and conventional Al pack cementation. While there were no significant microstructual differences observed in as aluminized specimens, cyclic oxidation test at 1423 K revealed clear advantages of Hf addition. Hf containing coatings showed smaller mass change with retarded surface rumpling during cyclic oxidation test. These results confirmed the beneficial effects of Hf addition reported for other alloy systems such as Pt modified γ-γ′ coatings and Pt modified aluminide coatings.

本文言語English
ページ(範囲)2422-2426
ページ数5
ジャーナルMaterials Transactions
48
9
DOI
出版ステータスPublished - 2007 9月
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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