Thermal conductivity and interfacial thermal resistance of thermal barrier coatings

• Project/Area Number: 15K06490
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Takahashi Satoru 首都大学東京, 理工学研究科, 准教授 (80260785)
• Co-Investigator(Kenkyū-buntansha): 阿子島 めぐみ 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究グループ付 (20356356)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 遮熱コーティング / 界面熱抵抗 / 熱伝導率 / 溶射 / 表面・界面物性 / 構造・機能材料 / 複合材料・物性

Outline of Final Research Achievements

A method was newly developed for measuring the thermal conductivity and interfacial thermal resistance of thermal barrier coatings (TBCs), which consist of metallic bond coats (BCs) and ceramic top coats (TCs) on superalloys. The effect of the heat treatment on the interfacial thermal resistance was investigated. It was found that the interfacial thermal resistance depends on the heat treatment. The interfacial thermal resistance decreases with the development of the thermally grown oxide by the heat treatment in air. Furthermore, the TCs by plasma sprayings found to have significantly anisotropic thermal diffusivity.

Research Products

• [Journal Article] Anisotropic Thermal Diffusivities of Plasma-Sprayed Thermal Barrier Coatings (2017)
  • Author(s): Akoshima Megumi、Takahashi Satoru
  • Journal Title: International Journal of Thermophysics Volume: 38 Issue: 9 Pages: 1-12
  • DOI: 10.1007/s10765-017-2267-x
  • Peer Reviewed / Open Access
• [Presentation] 遮熱コーティングの熱伝導率と界面熱抵抗の評価 (2018)
  • Author(s): 勝山秀信，高橋 智，阿子島めぐみ
  • Organizer: 日本機械学会関東支部第24期総会・講演会
• [Presentation] Thermal conductivity and interfacial thermal resistance of thermal barrier coatings (2017)
  • Author(s): Satoru Takahashi, Megumi Akoshima, Akihiro Kanno, Tatsuo Suidzu
  • Organizer: International Thermal Spray Conference & Exposition (ITSC2017)
  • Int'l Joint Research
• [Presentation] Anisotropic Thermal Diffusivity and Microstructure of Thermal Barrier Coating (2017)
  • Author(s): Megumi Akoshima, Satoru Takahashi
  • Organizer: 21st European Conference on Thermophysical Properties
  • Int'l Joint Research
• [Presentation] 遮熱コーティングのセラミックトップコートの熱拡散率異方性の評価 (2017)
  • Author(s): 阿子島めぐみ，高橋 智
  • Organizer: 第28回新構造・機能制御と傾斜機能材料シンポジウム(FGMs-2017)
• [Presentation] レーザフラッシュ法による遮熱コーティングの熱拡散率測定～セラミックトップコートの熱拡散率の異方性について～ (2017)
  • Author(s): 阿子島めぐみ，高橋 智
  • Organizer: 日本溶射学会平成29年度第２回関東支部講演会
• [Presentation] 遮熱コーティングYSZトップコートの熱拡散率の異方性 (2017)
  • Author(s): 阿子島めぐみ，高橋 智
  • Organizer: 第38会日本熱物性シンポジウム
• [Presentation] Anisotropy of Thermal Diffusivity of Plasma Sprayed Thermal Barrier Coating (2016)
  • Author(s): M. Akoshima , S. Takahashi
  • Organizer: The 11th Asian Thermophysical Properties Conference (ATPC 2016)
  • Place of Presentation: パシフィコ横浜 （横浜）
  • Year and Date: 2016-10-04
  • Int'l Joint Research
• [Presentation] Thermal Diffusivity related to Microstructure of YSZ top-coating of Thermal Barrier Coating (2016)
  • Author(s): M. Akoshima, M. Yokota, S. Takahashi
  • Organizer: XIII International Symposium on Temperature and Thermal Measurements in Industry and Science (TEMPMEKO 2016)
  • Place of Presentation: ZAKOPANE （POLAND）
  • Year and Date: 2016-06-29
  • Int'l Joint Research