Výsledky vyhledávání - "Ikuro Fujita"

Novel black bismuth oxide (Bi2O3) with enhanced photocurrent generation, produced by high-pressure torsion straining

Autor: Parisa Edalati, Shinji Munetoh, Qing Wang, Ikuro Fujita, Makoto Arita, Motonori Watanabe, Tatsumi Ishihara, Kaveh Edalati

Publikováno v: Scripta Materialia. 187:366-370

Bismuth oxide (Bi2O3), a yellow semiconductor ceramic, is considered as an advanced photoactive energy material, but its activity still needs further improvement for practical applications. In this study, black Bi2O3 with nanocrystalline structure an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2c9af4dbae4d66eaebd21b0c266a50fe
https://doi.org/10.1016/j.scriptamat.2020.06.052

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Microstructure and phase transformations of silica glass and vanadium oxide by severe plastic deformation via high-pressure torsion straining

Autor: Ikuro Fujita, Xavier Sauvage, Zenji Horita, Kaveh Edalati, Makoto Arita

Publikováno v: Journal of Alloys and Compounds
Journal of Alloys and Compounds, 2019, 779, pp.394-398. ⟨10.1016/j.jallcom.2018.11.086⟩
Journal of Alloys and Compounds, Elsevier, 2019, 779, pp.394-398. ⟨10.1016/j.jallcom.2018.11.086⟩

International audience; Plastic deformation of oxides is generally difficult due to their hard and brittle nature resulting from their covalent or ionic bondings. In this study, severe plastic deformation was successfully introduced in SiO2 glass and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78b34b0a9ce7861afb5decfa220d3094
https://doi.org/10.1016/j.jallcom.2018.11.086

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High-pressure torsion to induce oxygen vacancies in nanocrystals of magnesium oxide: Enhanced light absorbance, photocatalysis and significance in geology

Autor: Kaveh Edalati, Shinji Munetoh, Ikuro Fujita, Motonori Watanabe, Makoto Arita, Zenji Horita, Tatsumi Ishihara, Qing Wang

Publikováno v: Materialia. 11:100670

Magnesium oxide (MgO), which is an insulator ceramic with high significance in geology and earth sciences, is not generally considered as a photocatalyst due to its wide bandgap as ~7.8 eV. Experimental studies show that nanocrystalline MgO can have

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04eb539b0c8ec92ad354198f47024eb9
https://doi.org/10.1016/j.mtla.2020.100670

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Grain growth in nanograined aluminum oxide by high-pressure torsion: Phase transformation and plastic strain effects

Autor: Zenji Horita, Xavier Sauvage, Ikuro Fujita, Kaveh Edalati

Publikováno v: Scripta Materialia
Scripta Materialia, 2018, 152, pp.11-14. ⟨10.1016/j.scriptamat.2018.04.003⟩
Scripta Materialia, Elsevier, 2018, 152, pp.11-14. ⟨10.1016/j.scriptamat.2018.04.003⟩

Application of severe plastic deformation (SPD) to different materials usually leads to significant grain refinement and accelerated phase transformations. This study reports the occurrence of grain growth in nanocrystalline Al2O3 by SPD processing v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6f3fdc44083d2bc8d848e6d9934987e
https://hal.science/hal-02061728

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