Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/04

  • 研究者氏名
    Researcher Name

    助永壮平 Sohei SUKENAGA
    准教授 Associate Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    プロセスシステム工学研究部門 材料分離プロセス研究分野
    Division of Process and System Engineering, Materials Separation Processing
  • 研究キーワード
    Research Keywords

    Physical property measurement and structural characterization of oxide melts, super-cooled liquids, and glasses
    Metallurgical slags, fluxes, and vitrified nuclear waste
Research Subject
Improving function of oxide solvent and glasses based on structure

研究の背景 Background


Molten oxides are indispensable solvent materials used in high-temperature industries, e.g., metallurgical processes and nuclear waste vitrification. Also, oxide glasses, which can be obtained by cooling the melts, have been widely used as fundamental and functional materials. However, the mechanism of the variations in their properties with the change in composition and temperature remains unclear. It has still been challenging to maximize the function of these disordered materials without understanding the mechanism.

研究の目標 Outcome


To correlate the properties with structure, we have been conducting the “precise measurements of physical properties (e.g., viscosity, thermal conductivity, surface tension) for the molten oxides and glasses” and “structural characterization of these materials” using nuclear magnetic resonance and Raman Spectroscopies. Our goal is to maximize the function of the disordered oxide materials by controlling the structure.

研究図Research Figure

Fig.1 Pictorial descriptions of research contents related to understanding the physical properties of molten oxides. An illustration on the left shows the principle of the rotating cylinder method for viscosity measurement. A 27Al NMR spectrum of quenched glass is shown on the right as an example of structural characterization.

Fig.2 A photograph of synthesized sodium borosilicate glass with the size of 6 mm  6 mm  1mm for property measurements (e.g., thermal conductivity, density).

文献 / Publications

物性測定: Front Mater, 8(2021), 753746 (10.3389/fmats.2021.753746)., ISIJ Int, 60(2020), 2794 (10.2355/isijinternational.ISIJINT-2020-326).
構造解析: J Non-Cryst Solids, 587 (2022), 121600 (10.1016/j.jnoncrysol.2022.121600)., J Phys Chem Lett,8(2017), 2274 (10.1021/acs.jpclett.7b00465).