Effect of Hf Addition on Oxidation Properties of Pt-Ir Modified Aluminide Coating
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- Yamaguchi Akihiro
- Department of Materials Science and Engineering, Shibaura Institute of Technology Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS)
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- Murakami Hideyuki
- Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS)
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- Kuroda Seiji
- Coating Materials Group, Composites and Coatings Center, National Institute for Materials Science (NIMS)
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- Imai Hachiro
- Department of Materials Science and Engineering, Shibaura Institute of Technology
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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.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 48 (9), 2422-2426, 2007
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679226759040
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- NII論文ID
- 10019853732
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 8885251
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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