TATAMI Junichi

Affiliation

Faculty of Environment and Information Sciences, Division of Artificial Environment and Information

Job Title

Professor

Date of Birth

1969

Research Fields, Keywords

Advanced ceramics, Fracture mechanics, Ceramic processing, Microstructural control, Non-oxide ceramics, silicon nitride, aluminum nitride, sialon, Porous ceramics, Nano ceramics, Powder

Mail Address

E-mail address

Related SDGs




ORCID  https://orcid.org/0000-0002-4713-460X

写真a

The Best Research Achievement in the last 5 years 【 display / non-display

  • 【Published Thesis】 Carrier Depletion near the Grain Boundary of a SiC Bicrystal  2019.11

    【Academic Awards Received】 日本セラミックス協会JCS-JAPAN優秀論文賞  2020.06

Graduate School 【 display / non-display

  •  
    -
    1994

    Tokyo Institute of Technology  Graduate School, Division of Science and Engineering  Division of Inorganic Materials  Master Course  Completed

Degree 【 display / non-display

  • Doctor of Engineering -  Tokyo Institute of Technology

Campus Career 【 display / non-display

  • 2012.04
    -
    Now

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Artificial Environment and Information   Professor  

  • 2007.04
    -
    2012.03

    Duty   Yokohama National UniversityFaculty of Environment and Information Sciences   Division of Artificial Environment and Information   Associate Professor  

  • 2002.12
    -
    2007.03

    Duty   Yokohama National UniversityResearch Institute of Environment and Information Sciences   Division of Artificial Environment and Information   Associate Professor  

  • 2001.04
    -
    2002.11

    Duty   Yokohama National UniversityResearch Institute of Environment and Information Sciences   Division of Artificial Environment and Information   Research Associate  

  • 1998.08
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    2001.03

    Duty   Yokohama National UniversityGraduate School of Engineering   Research Associate  

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External Career 【 display / non-display

  • 2017.04
    -
    2021.03

    Kanagawa Institute of Industrial Science and Technology   Project Leader  

  • 1997.04
    -
    1997.11

      Research Fellowship for Young Scientists of the Japan Society for the Promotion of Science  

Academic Society Affiliations 【 display / non-display

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    Ceramics Society of Japan

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Powder

  • Tribology

  • Fracture mechanics

  • Ceramic processing

  • Non-oxide ceramics

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Books 【 display / non-display

  • セラミックスの材料化学

    (Part: Contributor )

    Springer  2020.11 ISBN: 978-981-13-9934-3

  • Powder Technology Handbook, Fourth Edition

    Ko Higashitani, Junichi Tatami, et al. (Part: Contributor )

    CRC Press  2019.10 ISBN: 9780367862800

  • Green and sustainable manufacturing of advanced materials

    Mrityungay Singh, Junichi Tatami, et al. (Part: Contributor )

    Elsevier  2015.08 ISBN: 9780124114975

  • Nanoparticle Technology Handbook 2nd edition

    Masuo Hosokawa, Junichi Tatami, et al. (Part: Contributor )

    Elsevier  2012.03 ISBN: 9780444563682

  • Nanoparticle technology hadbook

    M. Hosokawa, J. Tatami et al., (Part: Joint Work )

    Elsevier  2007.03

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Papers 【 display / non-display

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Review Papers 【 display / non-display

  • Control of Dispersion and Particle Assembling Structures in Non-aqueous, Dense, and Multicomponent Slurries

    Iijima Motoyuki, Morita Seitaro, Tatami Junichi

    Journal of the Society of Powder Technology, Japan ( The Society of Powder Technology, Japan )  57 ( 1 ) 19 - 24   2020

    Introduction and explanation (bulletin of university, research institution)   Joint Work

     View Summary

    <p>Our recent study on design of partial complex of polyethyleneimine and fatty acids/anionic surfactants toward dispersion stability control of non-aqueous, dense, and multicomponent slurries were reviewed. A series of polyethyleneimine complex were successfully designed by simple mixing process and found to effectively adsorb on many species of particles which lead to stability improvement of non-aqueous, dense, multicomponent slurries. A simple elaboration in the mixing orders of powders, solvents, and polyethyleneimine complex also found to compatibly realize the particle assembling and dispersion improvements. An example for applying these dispersion/particle assembling techniques to microstructure design of ceramic green parts will also introduced.</p>

    DOI CiNii

  • Preparation of Nitride Phosphor Particle Dispersed h-BN/Glass Composites

    Torase Natsumi, Tatami Junichi, Iijima Motoyuki, Takahashi Takuma

    Journal of the Society of Powder Technology, Japan ( The Society of Powder Technology, Japan )  57 ( 3 ) 137 - 143   2020

    Introduction and explanation (bulletin of university, research institution)   Joint Work

     View Summary

    <p>Wavelength conversion materials with high thermal conductivity and heat resistance have been strongly desired for high power semiconductor lighting source. Glass has higher heat resistances at elevated temperatures than resin and dispersion of high thermal conductive particles should result in the improvement of thermal conductivity of the composites. In this study, the composites of phosphate glass dispersing nitride phosphor and high thermal conductive particles were fabricated instead of typical composites of resins and oxide phosphors. As a result of verification of reactivity of the nitride phosphor and the high thermal conductive particles with the phosphate glass, between the glass and fillers, the firing temperature was set to 500°C and h-BN particles were selected as high thermal conductive particles. Dense nitride phosphor particles dispersed h-BN/glass composites were successfully obtained by hot-pressing. Thermal conductivity normal to hot-pressing direction was higher than that parallel to hot-pressing direction, and it increased with an increase in the hot-pressing pressure and the quantity of dispersed h-BN particles because of higher density and better orientation of the h-BN particles. Consequently, the nitride phosphor particle dispersed h-BN/glass composites with the thermal conductivity of 9.4 W/(m<sup>−1</sup>·K<sup>−1</sup>) were obtained.</p>

    DOI CiNii

  • In-situ Observation of Change Process in Void Morphology in Powder Bed under Uniaxial Pressing of Al<sub>2</sub>O<sub>3</sub> Granules by Optical Coherence Tomography

    TAKAHASHI Takuma, TATAMI Junichi

    Journal of the Japan Society of Powder and Powder Metallurgy ( Japan Society of Powder and Powder Metallurgy )  67 ( 11 ) 615 - 620   2020

    Introduction and explanation (bulletin of university, research institution)   Joint Work

     View Summary

    <p>Uniaxial pressing is a utilized technique to prepare powder compacts in regions of ceramics, metal, drug, and functional food. On the other hand, it is known that the inhomogeneous structures are induced by stress distribution resulting from applying the anisotropic stress field to the powder bed and they become the origin which forms defect degrading the performance of products. However, the generation process of inhomogeneous structures has not been clarified experimentally. Directly understanding the formation mechanism of the internal structure during uniaxial pressing is very important to control the particle-assembled structure in the powder bed and the quality of products. In this work, the change process in void morphology under uniaxial pressing was observed dynamic-two-dimensionally and intermittent-three-dimensionally by the novel observation system composed of swept-source optical coherence tomography (SS-OCT) and material testing machine. Moreover, the detected voids were evaluated quantitively to directly clarify particle-packing behavior on the initial stage of pressing.</p>

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  • 触媒担体として期待される微小セラミックボール

    Chemical Engineering; New York   106 ( 7 ) 17   1999.07

    Introduction and explanation (others)   Joint Work

  • セラミックスの成形と焼結における粉体特性の重要性

    セラミックス   34   816 - 820   1999

    Introduction and explanation (scientific journal)   Joint Work

Academic Awards Received 【 display / non-display

  • The Commendation for Science and Technology by the Minister of Education,Culture, Sports, Science and Technology:The Young Scientists' Prize,

    2009.04    

  • Poster Presentation Awards (ICAMP and AUSTCERAM2004)

    2004.12    

  • MRS-J Young Scientist Awards

    2003.10    

Grant-in-Aid for Scientific Research 【 display / non-display

  • Grant-in-Aid for Scientific Research(A)

    Project Year: 2017.04  -  2020.03 

  • Grant-in-Aid for Challenging Research (Exploratory)

    Project Year: 2019.06  -  2021.03 

 

Social Contribution(Extension lecture) 【 display / non-display

  • ICCCI2015

    2015.07
     
     

  • ISSNOX4

    2014.05