Effect of Hf addition on high temperature properties of Ir-containing alloy coatings

H. Murakami, K. Kamiya, A. Yamaguchi, Y. N. Wu, S. Kuroda

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

In the present study, high temperature properties of Ir-modified and Ir-Hf-modified aluminide coatings on Ni-based single crystal superalloy TMS-82+ were discussed. They were prepared by depositing pure Ir and Ir-Hf alloys on TMS-82+ using magnetron sputtering and EB-PVD, followed by a conventional Al-pack cementation process. The effects of Hf addition on the oxidation resistance and top-coat spallation resistance were investigated. Cyclic oxidation test at 1423K for 1h as one heating cycle revealed that while there is a small difference in oxidation kinetics and spallation lives between Ir and Ir-Hf coatings, drastic difference in surface morphology was observed. After 50 oxidation cycles the Ir-modified aluminide coating showed surface rumpling whereas the Ir-Hf modified aluminide coatings kept the flat surface. It was also revealed that excessive addition of Hf promoted the internal oxidation, resulting in the deterioration of substrates. These results agree with the conventional Pt-modified aluminide coatings and Ni-Al-Hf alloys.

元の言語English
ホスト出版物のタイトルProgress in Light Metals, Aerospace Materials and Superconductors
出版者Trans Tech Publications Ltd
ページ1689-1694
ページ数6
エディションPART 3
ISBN(印刷物)0878494324, 9780878494323
DOI
出版物ステータスPublished - 2007 1 1
イベント2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006 - Beijing, China
継続期間: 2006 6 252006 6 30

出版物シリーズ

名前Materials Science Forum
番号PART 3
546-549
ISSN(印刷物)0255-5476
ISSN(電子版)1662-9752

Other

Other2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006
China
Beijing
期間06/6/2506/6/30

ASJC Scopus subject areas

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

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  • これを引用

    Murakami, H., Kamiya, K., Yamaguchi, A., Wu, Y. N., & Kuroda, S. (2007). Effect of Hf addition on high temperature properties of Ir-containing alloy coatings. : Progress in Light Metals, Aerospace Materials and Superconductors (PART 3 版, pp. 1689-1694). (Materials Science Forum; 巻数 546-549, 番号 PART 3). Trans Tech Publications Ltd. https://doi.org/10.4028/0-87849-432-4.1689