7 records found.
The variation of oxygen and cation vacancies in strontium titanate polycrystals flash-sintered under direct and alternating electric fields
- Journal article
- Creator
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;Shunta Inagaki (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author)Kiyoshi Kobayashi (author) (Search by this author)
;
Takahisa Yamamoto (author) (Search by this author) - Keyword
- flash sintering, strontium titanate, oxygen vacancies, strontium vacancies, electron energy-loss spectroscopy
- Date published
- 2025-06-07
- Updated at
- 2025-09-29 16:30:21 +0900
Healing behavior of microcracks on the surface of yttria-stabilized polycrystals using an ultrafast high-temperature sintering method
- Journal article
- Creator
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Toshiki Sato (author) (Search by this author)
https://orcid.org/0009-0009-6673-2355
(unauthenticated)
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;Ayu Kodaira (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author)Koji Morita (author) (Search by this author)National Institute for Materials Science
;
Takahisa Yamamoto (author) (Search by this author)
https://orcid.org/0000-0001-9929-2805
(unauthenticated)
- Keyword
- ultrafast high-temperature sintering (UHTS), microcrack healing, Vickers
- Date published
- 2024-11-26
- Updated at
- 2025-02-12 16:30:15 +0900
Rapid titanium carbide synthesis from titanium and graphite powders via ultrafast high-temperature sintering
- Journal article
- Creator
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Daiki Akutagawa (author) (Search by this author)
https://orcid.org/0009-0005-1546-7003
(unauthenticated)
;
;Toshiki Sato (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author)Kiyoshi Kobayashi (author) (Search by this author)
;
Takahisa Yamamoto (author) (Search by this author)
https://orcid.org/0000-0001-9929-2805
(unauthenticated)
- Keyword
- titanium carbide, graphite, ultrafast high-temperature sintering, self-propagating high-temperature synthesis
- Date published
- 2025-06-06
- Updated at
- 2025-06-12 12:30:31 +0900
Microstructural analysis of flash-healed Vickers-indented microcracks near positive/negative electrodes on the (001) surface of cubic zirconia single crystals under direct current electric fields
- Journal article
- Creator
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;Shunsuke Kayukawa (author) (Search by this author);Yutaro Katsuyama (author) (Search by this author);Ayu Kodaira (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author)Koji Morita (author) (Search by this author)
;
Takahisa Yamamoto (author) (Search by this author)
https://orcid.org/0000-0001-9929-2805
(unauthenticated)
- Keyword
- current effect, flash event, zirconia, crack healing
- Date published
- 2024-04-22
- Updated at
- 2024-09-30 10:53:24 +0900
Effect of Initial Grain Size on Crack Healing Behavior under DC Electric Field of Zirconia (8Y‐CSZ) Ceramic
- Journal article
- Creator
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;Shoma Takahashi (author) (Search by this author)National Institute for Materials ScienceKoji Morita (author) (Search by this author)National Institute for Materials Science
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;Kohta Nambu (author) (Search by this author)National Institute for Materials Science;Daisuke Terada (author) (Search by this author)Kiyoshi Kobayashi (author) (Search by this author)National Institute for Materials Science
;
;Tomoharu Tokunaga (author) (Search by this author)Takahisa Yamamoto (author) (Search by this author)
- Keyword
- crack healing, flash event, current effect, zirconia
- Date published
- 2023-03-03
- Updated at
- 2024-09-25 16:30:45 +0900
Flash self‐joining of Y‐TZP ceramics assisted with an AC electric field
- Journal article
- Creator
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;Kohta Nambu (author) (Search by this author)National Institute for Materials Science;Taisuke Kitaoka (author) (Search by this author)Koji Morita (author) (Search by this author)National Institute for Materials Science
;
;Kohei Soga (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author);Takahisa Yamamoto (author) (Search by this author);Hiroshi Masuda (author) (Search by this author)Hidehiro Yoshida (author) (Search by this author)
- Keyword
- joining, current effect, zirconia, fracture strength
- Date published
- 2022-11-22
- Updated at
- 2024-11-06 16:30:53 +0900
Flash healing of Vickers microcracks formed on the (001) surface of cubic zirconia single crystals
- Journal article
- Creator
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;Shunsuke Kayukawa (author) (Search by this author);Yutaro Katsuyama (author) (Search by this author);Ayu Kodaira (author) (Search by this author);Tomoharu Tokunaga (author) (Search by this author)Koji Morita (author) (Search by this author)
;
;Atsutomo Nakamura (author) (Search by this author)Takahisa Yamamoto (author) (Search by this author)
- Keyword
- current effect, flash event, zirconia, crack healing
- Date published
- 2023-06-02
- Updated at
- 2025-06-02 08:30:07 +0900