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Fabrication of Ultra-Strong Glasses via Spatiotemporal Dissipative Structure of Singular Stress Field

Research Project

Project/Area Number 21K18837
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 26:Materials engineering and related fields
Research InstitutionOsaka University (2022-2023)
National Institute of Advanced Industrial Science and Technology (2021)

Principal Investigator

Shinozaki Kenji  大阪大学, 大学院工学研究科, 准教授 (10723489)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsガラス / 破壊靭性 / ナノ粒子 / 応力集中 / ナノ力学 / 延性賦与 / 脆性ー延性転移 / ナノインデンテーション / ナノ構造 / 力学 / 延性 / SPS焼結 / ゾルゲル法 / 有限要素法 / ナノインデンテーション法 / ビッカース試験 / 金属ナノ粒子 / 高靭性 / 脆性-延性遷移 / ホットプレス法 / 残留応力 / 弾塑性
Outline of Research at the Start

ガラスが脆い原因は、亀裂先端で巨大応力(解析上無限大)の特異応力場が形成し、わずかな力で亀裂進展することである。一方、延性材料は降伏により亀裂先端が鈍化するので応力が分散する。そのため、ガラスに塑性、延性を付与するのは有効なアプローチである。申請研究では脆さの原因である特異応力場を時空間的に分散させるナノ構造をガラス中に設計することで、ガラスの強度の飛躍的向上を目指す。

Outline of Final Research Achievements

Glass cracking is an unsolved material issue that has become a social problem. We have proposed the dissipation of singular stress field by imparting ductility to glass as a new approach to improve toughness that is unlike conventional composite or chemical/physical strengthening approaches. For example, we proposed that the dispersion of metal nanoparticles, even with a very small amount of metal nanoparticles (0.5 vol%), can improve fracture toughness by inducing plasticity and reducing the stress concentration at the crack tip by plastic deformation. Through this research, we succeeded in enhancing the fracture toughness by a factor of three, and achieved the best fracture toughness in the world with a very small amount of additives in a process that is suitable for large scale and mass production to a certain extent.

Translated with DeepL.com (free version)

Academic Significance and Societal Importance of the Research Achievements

材料組織に力学的不均質性を導入することで材料の靭性や強度が向上することを提示した。これはガラスのみならず、様々な材料において強い材料を開発する道筋を提示する者である。さらに,産業上、社会上もガラスの割れの問題は大きい。本課題により提示された高靭性ガラスは、従来のアプローチによるガラス物性の限界を突破するものであり、われの根本的解決につながると期待される。ガラスの軽量化を加速し、モバイルや車両などのさらなる軽量化を加速するだけでなく、機械加工性の向上なども期待され、ガラスが使える場面が広がり部材のロングライフサイクル・リユース・リサイクル性向上などを通してSDGsにも貢献す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

    (23 results)

All 2024 2023 2022 2021

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 1 results) Presentation (15 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results)

  • [Journal Article] Fabrication of a robust organic-inorganic perovskite nanoparticle dispersion layer on a glass surface2024

    • Author(s)
      Shinozaki Kenji、Kawano Naoki、Yamada Aiga、Ichikawa Satoshi、Fujima Takuya
    • Journal Title

      Ceramics International

      Volume: 50 Issue: 9 Pages: 14113-14117

    • DOI

      10.1016/j.ceramint.2024.01.315

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Metallic glass reinforcement for the enhanced mechanical performance of oxide glass2023

    • Author(s)
      Louzguine-Luzgin D.V.、Shinozaki K.
    • Journal Title

      Materials Letters

      Volume: 352 Pages: 135193-135193

    • DOI

      10.1016/j.matlet.2023.135193

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Brittle-ductile transition and toughening of silica glass via Ni nanoparticle incorporation at a small volume fraction2023

    • Author(s)
      Liu Lei、Shinozaki Kenji
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 940 Pages: 168874-168874

    • DOI

      10.1016/j.jallcom.2023.168874

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Design of Nanostructures in Glasses toward Higher Toughness2022

    • Author(s)
      SHINOZAKI Kenji
    • Journal Title

      Journal of the Society of Materials Science, Japan

      Volume: 71 Issue: 9 Pages: 768-771

    • DOI

      10.2472/jsms.71.768

    • ISSN
      0514-5163, 1880-7488
    • Year and Date
      2022-09-15
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fabrication of Ti<sub>3</sub>C<sub>2</sub> MXene/borosilicate glass with enhanced fracture toughness2022

    • Author(s)
      Liu Lei、Shinozaki Kenji
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 130 Issue: 8 Pages: 696-700

    • DOI

      10.2109/jcersj2.22053

    • ISSN
      1348-6535, 1882-0743
    • Year and Date
      2022-08-01
    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Thermal conductivity and mechanical properties of soda-lime glass with interfacially connected Au layer fabricated via sputtering and spark plasma sintering2022

    • Author(s)
      Liu Lei、Shinozaki Kenji
    • Journal Title

      Journal of Asian Ceramic Societies

      Volume: 10 Issue: 2 Pages: 424-429

    • DOI

      10.1080/21870764.2022.2068286

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Microstructure and improved fracture toughness of borosilicate glass reinforced by 1 vol% Ag nanoparticles2022

    • Author(s)
      Liu Lei、Shinozaki Kenji
    • Journal Title

      Ceramics International

      Volume: 48 Issue: 20 Pages: 30900-30904

    • DOI

      10.1016/j.ceramint.2022.07.044

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fracture toughness enhancement via sub‐micro silver‐precipitation in silica glass fabricated by spark plasma sintering2021

    • Author(s)
      Liu Lei、Shinozaki Kenji
    • Journal Title

      Journal of the American Ceramic Society

      Volume: 105 Issue: 3 Pages: 1980-1991

    • DOI

      10.1111/jace.18214

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 表面Niナノ粒子分散処理による透明・高靭性ガラスの開発2024

    • Author(s)
      山田大輝, 篠崎健二
    • Organizer
      日本セラミックス協会2024年年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ナノ粒子分散による強靭なガラスの開発2024

    • Author(s)
      篠崎 健二
    • Organizer
      ニューガラスフォーラム 第152回若手懇談会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Ag ナノ粒子分散によるガラスコーティングの破壊靭性向上2023

    • Author(s)
      篠崎 健二, 門馬 宙哉
    • Organizer
      The 34th Meeting on Glasses for Photonics
    • Related Report
      2023 Annual Research Report
  • [Presentation] Enhancement of Fracture Toughness of Glasses via Precipitation of Metal Nanoparticles2023

    • Author(s)
      篠崎健二
    • Organizer
      MRM2023/IUMRS-ICA2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Ag粒子分散によるガラスおよびガラス膜の顕著な破壊靭性向上2023

    • Author(s)
      篠崎 健二, 門馬 宙哉
    • Organizer
      第64 回ガラスおよびフォトニクス材料討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Ag粒子添加によるSiO2ガラス膜の破壊靭性向上2023

    • Author(s)
      門馬 宙哉, 篠崎 健二
    • Organizer
      日本セラミックス協 会 第36回秋季シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Impact of silver nanoparticles on crack growth in silica glass coating2023

    • Author(s)
      門馬 宙哉, 篠崎 健二
    • Organizer
      E-MRS 2023 Spring Meeting
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Agナノ粒子分散によるSiO2ガラスコーティングのクラック進展への影響2022

    • Author(s)
      門馬宙哉、篠崎健二
    • Organizer
      日本セラミックス協会 2022年年会
    • Related Report
      2022 Research-status Report
  • [Presentation] ガラスのナノスケール構造設計による光機能および力学機能エンジニアリング2022

    • Author(s)
      篠崎健二
    • Organizer
      第61回セラミックス基礎科学討論会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Ti3C2 MXene分散によるホウケイ酸ガラスの破壊靭性向上2022

    • Author(s)
      篠崎健二、Lei Liu
    • Organizer
      第83回応用物理学会秋季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Toughness Enhancement of Glasses by Dispersion of Trace Amount of Ni Nanoparticles2022

    • Author(s)
      Kenji Shinozaki, Lei Liu
    • Organizer
      International Congress on Glass 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Toughening of Glass by Imparting Ductility by Nanometals2022

    • Author(s)
      Kenji Shinozaki
    • Organizer
      Materials-2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ナノ金属析出によるガラスの変形挙動制御と高強度化2021

    • Author(s)
      篠崎健二、Lei Liu
    • Organizer
      日本セラミックス協会 第 34回秋季シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 微量の金属ナノ粒子析出によるガラスの破壊靭性向上2021

    • Author(s)
      篠崎健二、Lei Liu
    • Organizer
      32nd Meeting on Glasses for Photonics
    • Related Report
      2021 Research-status Report
  • [Presentation] Toughening of Glass by Imparting Ductility via Morphologically Designed Precipitates2021

    • Author(s)
      篠崎健二、Lei Liu
    • Organizer
      Material Research Meeting 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2021-07-13   Modified: 2025-01-30  

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