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• すぐ身につく分析化学・機器分析の実務 : 基礎、前処理、手法選択、記録作成を現場目線で解説

  矢矧 束穂, 瀬戸山 央（ 担当： 単著）

  日刊工業新聞社  2020年  （ ISBN:9784526080456 ）

  CiNii

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  記述言語：日本語 著書種別：学術書

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• Deformation Behavior and Fracture Strength of Single-Crystal 4H-SiC Determined by Microcantilever Bending Tests

  Yahagi, T; Ohji, T; Yamaguchi, H; Takahashi, T; Nakano, H; Iijima, M; Tatami, J

  ADVANCED ENGINEERING MATERIALS   26 ( 18 )   2024年9月

  DOI Web of Science

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  記述言語：日本語   掲載種別：研究論文（学術雑誌）   共著  

• Microscopic mechanical properties of silicon nitride ceramics corroded in sulfuric acid solution

  Tatami, J; Uda, M; Takahashi, T; Yahagi, T; Iijima, M; Matsui, K; Ohji, T; Nakano, H

  JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   44 ( 9 )   5415 - 5421   2024年8月

  DOI Web of Science

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  記述言語：日本語   掲載種別：研究論文（学術雑誌）   共著  

• Micro-scale mechanical properties of surface layer in ion-exchanged glass

  Fujita Saho, Ohji Tatsuki, Yahagi Tsukaho, Iijima Motoyuki, Tatami Junichi

  Journal of the American Ceramic Society   107 ( 6 )   3666 - 3672   2024年2月

  CiNii Research

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  記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The American Ceramic Society   共著  

  Today, ion-exchanged or chemically strengthened glass is ubiquitously used all over the world, typically for scratch-free display cover of personal mobile phones. It has been known that the strengthening is due to developments of high compressive stress in the surface layer by its internally constrained dilation . We investigated micro-scale mechanical properties of the surface layer itself of a Na+-to-K+ ion-exchanged soda lime silicate glass, revealing that the strength of the layer increased nearly 40% by the ion-exchange with little compression effect from the interior. The fracture toughness, however, was comparable before and after the ion-exchange, indicating that the ion-exchange reduces the crack size of the fracture origin. Theoretical estimates of fracture surface energies verified the measured fracture toughness. It was presumed that the observed crack-size reduction is due to crack healing effects enhanced by the ion-exchange.

• Deformation behavior and bending strength of single crystal 8 mol% yttria-stabilized zirconia at microscopic scale

  Muramoto, M; Tatami, J; Iijima, M; Matsui, K; Yahagi, T; Takahashi, T; Nakano, H; Ohji, T

  JOURNAL OF THE EUROPEAN CERAMIC SOCIETY   44 ( 2 )   1061 - 1069   2024年2月

  DOI Web of Science

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  記述言語：日本語   掲載種別：研究論文（学術雑誌）   共著  

• Deformation behavior and bending strength of single crystal 8 mol% yttria-stabilized zirconia at microscopic scale

  Muramoto Mayuko, Tatami Junichi, Iijima Motoyuki, Matsui Kazumi, Yahagi Tsukaho, Takahashi Takuma, … 全著者表示

  Journal of the European Ceramic Society   44 ( 2 )   1061 - 1069   2023年11月

  CiNii Research

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  記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier Science Ltd.   共著  

  Yield phenomena and bending strength of single crystal 8YSZ were evaluated using microcantilever beam specimens with various crystal orientations. Nonlinearity due to plastic deformation was observed in the stress strain curves, and the yield stress was found to depend on the crystal orientation. TEM observation revealed many areas of disordered lattice in the region where the maximum tensile stress occurred. Resolved shear stress (RSS) was analyzed for the primary {001} and the secondary {110} and {111} slip systems as a function of the angle between the specimen's longitudinal direction and the [001] orientation, indicating that the RSS for the secondary ones was the critical RSS in the angle at 10 degrees or lower while that for the primary one did so at 20 degrees or higher. The measured bending strength, which depended on the crystal orientation, was lower than, but on the same order of magnitude as, the ideal strength.

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