Ｎｉ基超合金におけるβ相を用いた耐酸化ＥＱコーティングシステムの開発

DOI Web Site 被引用文献5件 参考文献2件
  • 川岸 京子
    独立行政法人物質・材料研究機構材料研究所超耐熱材料グループ
  • 佐藤 彰洋
    独立行政法人物質・材料研究機構材料研究所超耐熱材料グループ 石川島播磨重工業株式会社航空宇宙事業本部技術開発センター材料技術部
  • 原田 広史
    独立行政法人物質・材料研究機構材料研究所超耐熱材料グループ

書誌事項

タイトル別名
  • Development of Oxidation-Resistant .BETA.-Phase EQ Coating System for Ni-Base Superalloys
  • Development of Oxidation-Resistant β-Phase EQ Coating System for Ni-Base Superalloys

説明

  A new and stable bond coat system, EQ coating, which is in equilibrium thermodynamically with γ/γ′ substrate, suppresses the diffusion of alloying elements between the substrate and coating, and the formation of SRZ. In this study, β phase is proposed as the candidate for oxidation-resistant EQ coating material because of its high Al content. Combinations of γ/γ′ alloy for the substrate material and β alloy for the coating material which are in equilibrium were developed in Ni-Al-Cr ternary system and Ni-base multi-component system. Diffusion couples were made for each combination and were heat treated at 1100°C for 300 h. The concentration profiles of the alloying elements at the interfaces between the β alloy and γ/γ′ alloy in the diffusion couples were analyzed to investigate the existence of the diffusion zone. Cyclic oxidation examination was performed and oxidation properties were discussed.<br>

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 70 (2), 188-191, 2006

    公益社団法人 日本金属学会

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