Diffusion behavior of interstitials in platinum-metal-group metals

• Project/Area Number: 20760477
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Structural/Functional materials
• Research Institution: National Institute for Materials Science
• Principal Investigator: SEKIDO Nobuaki National Institute for Materials Science, 環境・エネルギー材料萌芽ラボ, 主任研究員 (10462516)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
• Keywords: 高温材料 / 拡散 / 金属物性 / 表面処理 / 界面構造 / 格子欠陥 / 元素戦略 / 白金族金属

Research Abstract

This project has focused on designing an effective coating system against carbon based high temperature structural materials. Platinum group metals were chosen as candidates for a diffusion barrier that prevents carbon outward and oxygen inward diffusion. Their applicability was examined on the basis of carbon diffusion behavior. Pt is found to possess quite low carbon diffusivity, suggesting that Pt is promising for this type of application.

Research Products

• [Journal Article] Growth behavior and interfacial character of Ir3Y precipitates in the Ir2Y Lave phase matrix (2010)
  • Author(s): N. Sekido, Y. Yamabe-Mitarai
  • Journal Title: Mater. Trans. 51 Pages: 447-454
  • Peer Reviewed
• [Journal Article] Second Phase Precipitation within a Laves Phase in the Ir-Y Binary System (2010)
  • Author(s): N. Sekido, Y. Yamabe-Mitarai
  • Journal Title: Materials Science Forum 638-642 Pages: 1400-1405
  • Peer Reviewed
• [Journal Article] Growth behavior and interfacial character of Ir3Y precipitates in the Ir2Y Lave phase matrix (2010)
  • Author(s): Nobuaki Sekido, Yoko Yamabe-Mitarai
  • Journal Title: Materials Transaction 51 Pages: 447-454
  • Peer Reviewed
• [Journal Article] Second Phase Precipitation within a Laves Phase in the Ir-Y Binary System (2010)
  • Author(s): Nobuaki Sekido, Yoko Yamabe-Mitarai
  • Journal Title: Materials Science Forum 638-642 Pages: 1400-1405
  • Peer Reviewed
• [Journal Article] Development of porous ceramics layers through sublimation of metallic phases (2009)
  • Author(s): N. Sekido, Y. Yamabe-Mitarai
  • Journal Title: International Journal of Refractory Metals and Hard Materials 27 Pages: 907-911
  • Peer Reviewed
• [Journal Article] Phase equilibria and oxidation behavior of Ir-rich Ir-Y binary alloys (2009)
  • Author(s): N. Sekido, H. Murakami, Y. Yamabe-Mitarai
  • Journal Title: Journal of Alloys and Compounds 476 Pages: 107-112
  • Peer Reviewed
• [Journal Article] Development of porous ceramics layers through sublimation of metallic phases (2009)
  • Author(s): Nobuaki Sekido, Yoko Yamabe-Mitarai
  • Journal Title: International Journal of Refractory Metals and Hard Materials 27 Pages: 907-911
  • Peer Reviewed
• [Journal Article] Phase equilibria and oxidation behavior of Ir-rich Ir-Y binary alloys (2009)
  • Author(s): Nobuaki Sekido
  • Journal Title: Journal of Alloys and Compounds 476 Pages: 107-112
  • Peer Reviewed
• [Presentation] Laves相Ir2Yに析出したIr3Yの成長とその界面構造 (2009)
  • Author(s): 関戸信彰、御手洗容子
  • Organizer: 日本金属学会2009年秋期大会
  • Place of Presentation: 京都大学
  • Year and Date: 2009-09-15
• [Presentation] Laves 相Ir2Yに析出したIr3Yの成長とその界面構造 (2009)
  • Author(s): 関戸信彰
  • Organizer: 日本金属学会2009年秋期大会
  • Place of Presentation: 京都大学
  • Year and Date: 2009-09-15
• [Presentation] Ir2Y母相中におけるIr3Y相の析出とその成長挙動 (2009)
  • Author(s): 関戸信彰、御手洗容子
  • Organizer: 日本金属学会2009年度春期大会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2009-03-30
• [Presentation] Ir_2Y母相中におけるIr_3Y相の析出とその成長挙動 (2009)
  • Author(s): 関戸 信彰
  • Organizer: 日本金属学会2009年度春期大会
  • Place of Presentation: 東京工業大学
  • Year and Date: 2009-03-30
• [Presentation] Laves相Ir2YにおけるIr3Yの析出挙動 (2008)
  • Author(s): 関戸信彰、御手洗容子
  • Organizer: 日本金属学会2008年秋期大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2008-09-23
• [Presentation] Laves相Ir_2YにおけるIr_3Yの析出挙動 (2008)
  • Author(s): 関戸 信彰
  • Organizer: 日本金属学会2008年秋期大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2008-09-23
• [Patent(Industrial Property Rights)] 多孔質セラミックとその製造方法 (2008)
  • Inventor(s): 関戸信彰/御手洗容子
  • Industrial Property Rights Holder: (独)物質・材料研究機構
  • Industrial Property Number: 2008-194565
  • Filing Date: 2008-07-29