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Development of High Thermal insulating and High Durability Coatings by Controlling Multiscale Microstructure

Research Project

Project/Area Number 21K03768
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionChiba University

Principal Investigator

Yamazaki Yasuhiro  千葉大学, 大学院工学研究院, 准教授 (70291755)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords遮熱コーティング / 微粒子溶射 / 組織構造制御 / 熱応力緩和 / 遮熱特性
Outline of Research at the Start

本研では,核心をなす問いを『ナノからミリメートルにわたるマルチスケールで組織構造を制御することで,従来はトレードオフの関係にある低熱伝導性と熱応力抑制を両立した耐熱材料が開発可能か?』と設定し,この学術的な問いに対し,TBCを対象として取り上げ,マルチスケール組織構造制御により,工学的解『従来TBCの特性を凌駕する高遮熱性・高耐久性を有するTBCの開発が可能であることを証明する』ことを本研究の目的とする.

Outline of Final Research Achievements

In heat-resistant structural materials, it is required to "suppress thermal stress" by "high thermal conductivity" because a reduction in thermal conductivity causes an increase in internal thermal stress, which accelerates damage and reduces service life. For the question of whether it is possible to achieve both low thermal conductivity and suppression of internal thermal stress, which is generally a trade-off relationship, a novel thermal barrier coating with a composite columnar structure of YbTa3O9 and YSZ layers was developed and investigated for its thermal barrier property and durability. As a result, it was experimentally clarified that the developed coating has superior properties to conventional materials, and it was demonstrated that the columnar composite structure can achieve both low thermal conductivity and thermal stress suppression.

Academic Significance and Societal Importance of the Research Achievements

本研究で提案したナノからミリにわたるマルチスケールの結晶・組織構造制御により,従来,トレードオフの関係にあった低伝導性と熱応力緩和の両立が可能であり,従来遮熱コーティングをはるかに凌駕する耐熱サイクル性が得られることを実証した.さらに,時間軸(経時変化)も考慮した破壊挙動の理解とそれに基づく組織構造の最適化の指針を提示することが可能となった.
得られた成果から,マルチスケール組織構造制御の概念を耐熱構造材料に水平展開することにより,“低熱伝導かつ低熱応力”の機能を有する新しい耐熱構造設計につながることが期待される.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Unsteady Thermal Stresses of Thermal Barrier Coatings under Cyclic Heating2023

    • Author(s)
      SUZUKI Kenji、TOYOKAWA Hidenori、SAJI Choji、YAMAZAKI Yasuhiro、OKUMURA Tadaharu
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 72 Issue: 11 Pages: 821-827

    • DOI

      10.2472/jsms.72.821

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2023-11-15
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Internal Stress Distribution in Suspension Plasma Sprayed Thermal Barrier Coating Subjected to in-plane Tensile Loading2023

    • Author(s)
      山崎 泰広、篠宮 啓介、奥村 忠晴、鈴木 賢治、菖蒲 敬久、中村 唯我
    • Journal Title

      Journal of Japan Thermal Spray Society

      Volume: 60 Issue: 1 Pages: 3-10

    • DOI

      10.11330/jtss.60.3

    • ISSN
      0916-6076, 2186-1080
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of the microstructure of suspension plasma-sprayed thermal barrier coatings on their thermal cycling damage2023

    • Author(s)
      Yamazaki Yasuhiro、Shinomiya Keisuke、Hamaguchi Tatsuya、Habu Yoichiro、Takagi Kaito
    • Journal Title

      Surface and Coatings Technology

      Volume: 456 Pages: 129269-129269

    • DOI

      10.1016/j.surfcoat.2023.129269

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Relationship between the mechanical properties and structure of a suspension plasma-sprayed thermal barrier coating with columnar microstructure2022

    • Author(s)
      Yamazaki Yasuhiro、Morikawa Masahiro、Hamaguchi Tatsuya、Habu Yoichiro、Ohide Yuhei、Takagi Kaito
    • Journal Title

      Surface and Coatings Technology

      Volume: 439 Pages: 128430-128430

    • DOI

      10.1016/j.surfcoat.2022.128430

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] APS法及びSPS法によって成膜されたYbTa3O9/YSZ-TBCの熱サイクル損傷挙動2024

    • Author(s)
      奥村忠晴,山崎泰広
    • Organizer
      日本機械学会第30期関東支部講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] サスペンションプラズマ溶射TBCの耐熱サイクル特性と微視組織の関連性2022

    • Author(s)
      奥村忠晴,篠宮啓佑,山崎泰広
    • Organizer
      日本機械学会2022年度年次大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Effect of microstructure on thermal fatigue life of a suspension plasma sprayed thermal barrier coating with, columnar structure2022

    • Author(s)
      Y. Yamazaki, K. Shinomiya
    • Organizer
      The Japan Society of Mechanical Engineers ICM&P 2022 International Conference on Materials & Processing 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] サスペンションプラズマ溶射 TBC の熱サイクル損傷機構の検討2021

    • Author(s)
      篠宮啓佑,山崎泰広,濱口竜哉,土生陽一郎,大井手雄平,高木海人
    • Organizer
      日本機械学会2021年度年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] ペロブストカイト型酸化物TBCの熱サイクル損傷挙動2021

    • Author(s)
      篠宮啓佑,山崎泰広,濱口竜哉,土生陽一郎,大井手雄平,高木海人
    • Organizer
      第59回日本材料学会高温強度シンポジウム
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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