Journal Paper

• Gaku Okuma, Tsukasa Shimizugawa, Shingo Ozaki, Toshio Osada, Shingo Machida, Yutaro Arai, Ryo Inoue, Hideki Kakisawa, Yuki Sada, Masayuki Uesugi, Akihisa Takeuchi, Fumihiro Wakai. Strength-limiting defects evolved from heterogeneities during the sintering of high-purity submicron alumina powder, Journal of the European Ceramic Society, Elsevier, Vol. 45, No. 16, pp. 117679, Dec. 2025.
• Keitaro HIRAOKA, Gaku OKUMA, Akihisa TAKEUCHI, Masayuki UESUGI, Yuki SADA, Ken-ichi KATSUMATA, Atsuo YASUMORI, Kei MAEDA. Effect of cristobalite on the response to indentation in potassium-fluorrichterite glass-ceramics, Journal of the Ceramic Society of Japan, Vol. 133, No. 11, pp. 1-6, Nov. 2025.
• Shuqi Guo, Gaku Okuma, Kimiyoshi Naito, Hideki Kakisawa. Volume fraction dependence of electrical conductivity in B4C-based composites with ZrB2-ZrC, Materials Letters, Vol. 397, No. 15, pp. 138820, Oct. 2025.
• Shingo Machida, Yasuo Nagano, Gaku Okuma. Superheated steam-induced surface-accelerated amorphous-to-crystalline transition in an aluminosilicate inorganic polymer, CrystEngComm, Vol. 27, pp. 6146-6154, Sept. 2025.
• Shingo Machida, Daisaku Yokoe, Masaya Suzuki, Toshimichi Shibue, Gaku Okuma, Daiki Takeda. Mutual phase stability between kaolinite-derived hexacelsian and zirconia in a mixed system, Inorganic Chemistry, Vol. 64, pp. 18479-18489, Sept. 2025.
• Shuqi Guo, Gaku Okuma, Kimiyoshi Naito, Hideki Kakisawa. Effect of thermal exposure at 1200 °C and 1400 °C on microstructure and mechanical properties of reactive hot-pressed LaMgAl11O19 ceramics, Ceramics International, Vol. 51, No. 20, pp. 31200-31208, Aug. 2025.
• Shuqi Guo, Gaku Okuma, Kimiyoshi Naito, Hideki Kakisawa. Microstructure and mechanical properties of reactive hot-pressed LaMgAl11O19 ceramics, Ceramics International, Vol. 51, No. 3, pp. 4058-4066, Mar. 2025.

Book

• Gaku Okuma. セラミックスの固相/液相焼結方法, セラミックスの製造プロセスと解析評価技術および最新トレンド, 株式会社R＆D支援センター, Nov. 2025.

International Conference (Reviewed)

• Gaku Okuma, Tsukasa Shimizugawa, Shingo Ozaki, Toshio Osada, Fumihiro Wakai. Formation and Evolution of Complex Pores from Heterogeneities during Sintering of High-Purity Submicron Alumina, The 39th International Korea – Japan Seminar on Ceramics, Nov. 2025.
• Gaku Okuma, Ryutaro Usukawa, Toshio Osada, Fumihiro Wakai. 3D Observation of Microstructural Changes in Tape-Cast Alumina during Sintering Using Synchrotron X-ray CT, 2nd JSME International Conference on Materials & Processing (ICM&P 2025), 日本機械学会, Nov. 2025.
• Gaku Okuma, Tsukasa Shimizugawa, Shingo Ozaki, Toshio Osada, Fumihiro Wakai. Evolution of Complex Pores from Heterogeneities during Sintering of High-Purity Submicron Alumina, The Fifteenth International Conference on the Science and Technology for Advanced Ceramics (STAC15), Sept. 2025.
• Gaku Okuma. Evolution of heterogeneous microstructure in sintering of tape-cast alumina laminates observed by synchrotron X-ray CT, The 7th International Conference on Computer Communication and the Internet (ICCCI 2025), 粉体工学会, July 2025.
• Gaku Okuma. Synchrotron X-ray multiscale observation of heterogeneous microstructures and defects in ceramics during sintering, 49TH INTERNATIONAL CONFERENCE AND EXPOSITION ON ADVANCED CERAMICS AND COMPOSITES, The American Ceramic Society, Jan. 2025.

International Conference (Not reviewed / Unknown)

• Gaku Okuma. Multiscale Synchrotron X-ray Observation of Microstructural Heterogeneity and Defect Evolution in Ceramics during Sintering, International Symposium on Green Processing for Advanced Ceramics (IGPAC 2025), Oct. 2025.

Domestic Conference (Not reviewed / Unknown)

• gaku okuma. 高信頼性材料実現を目指す焼結プロセスの放射光X線CTマルチスケール解析, 粉体粉末冶金協会2025年度秋季大会, Oct. 2025.
• 土谷 惇人, 鈴木 飛鳥, 大熊 学, 尾﨑 由紀子, 星野 真人, 上椙 昌之. In-situ X 線CTによるCu粉末焼結過程の観察, 日本金属学会第175回秋期講演大会, Sept. 2025.
• Gaku Okuma, Tsukasa Shimizugawa, Shingo Ozaki, Toshio Osada, FUMIHIRO WAKAI. サブミクロンアルミナ焼結における破壊強度を支配する複雑気孔領域の進展, 第38回日本セラミックス協会秋季シンポジウム, Sept. 2025.
• 谷口 晴哉, 大熊 学, 新井 優太郎, 垣澤 英樹, 津之浦 徹, 鶴田 秀樹, 井上 遼. 放射光CTと深層学習を用いた画像セグメンテーションによる耐熱複合材料の損傷検出, 第38回日本セラミックス協会秋季シンポジウム, Sept. 2025.
• 尾﨑 由紀子, 土谷 惇人, 大熊 学, 鈴木 飛鳥, 星野 真人, 上椙 真之. In-situ X線CTによるCu粉末焼結過程の3D粒子形態変化の定量化, 日本金属学会2025年秋期(第177回)講演大会, Sept. 2025.
• Gaku Okuma. 放射光X線CT観察に基づく焼結中の不均質由来の欠陥形成機構の解明, 東海若手セラミスト懇話会 2025年 夏期セミナー, June 2025.
• 井上 遼, 新井 優太郎, 垣澤 英樹, 大熊 学. CMCの損傷・破壊とCT画像と深層学習を用いた特性予測, 日本材料学会第74期学術講演会, May 2025.

Other Publication

• Gaku Okuma. アルミナ積層体内部の焼結中の微構造と欠陥形状変化の放射光X線CT観察, 耐火物, Vol. 77, No. 9, pp. 424-432, Sept. 2025.
• Toshio Osada, Gaku Okuma, Shingo Ozaki. 高信頼性セラミックスのデータ駆動型設計を目指して, FC Report, Vol. 43, No. 3, pp. 105-110, July 2025.
• Gaku Okuma. 高信頼性材料の実現を目指した焼結組織の放射光X線CTマルチスケール解析, 粉体および粉末冶金, Vol. 72, No. 5, pp. 121-128, July 2025.
• Gaku Okuma. 濃くて短いドイツ留学記, Vol. 60, No. 7, pp. 498-499, July 2025.
• Gaku Okuma. 焼成（脱脂・焼結）, 粉体技術誌 入門講座, 日本粉体工業技術協会, Vol. 17, No. 5, pp. 413-416, Mar. 2025.

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