Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/18

  • 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

    構造解析 (Raman, Solid-State NMR)
    Physical Chemistry of melts, super cooled liquid, and glasses
    Structural analysis (Raman, Solid-State NMR)l
    Metallurgical slags
    Vitrified nuclear waste
Research Subject
Relation between micro-structure and physico-chemical properties for silicate melts and glasses

研究の背景 Background


Silicate melts are common liquid material for the high temperature industries; the melts are used as metallurgical slags, solvent for nuclear waste and so on. Silicate glasses, which can be made by cooling the melts, are also used fundamental and functional materials. However, the relation between the physico-chemical properties and the micro-structure of the silicate melts and glasses has not been clarified. It makes difficult to optimize the function of the materials.

研究の目標 Outcome


Physical properties (e.g., viscosity, thermal conductivity, surface tension) of the silicate melts and chemical properties of their glasses are investigated as functions of temperature and chemical composition. Microstructure of the melts and glasses are investigated by the Raman and the NMR spectroscopies. Establishment of structure-based model for those physico-chemical properties is a goal of our challenge.

研究図Research Figure

Fig.1. Additive effect of alkali oxides on the viscosity of the CaO-SiO2-Al2O3 system at 1873 K. Fig.2. 27Al MAS NMR spectra of the CaO-SiO2-Al2O3- K2O glasses obtained at 18.8 T. Fig.3. Optical image of Li2Si2O5 melt on a Pt substrates at 1473 K under Ar atmosphere.

文献 / Publications

ISIJ Int, 46, 352 (2006). ISIJ Int, 51, 333 (2011). ISIJ Int, 53, 185 (2013). J. MMIJ, 129, 203 (2013). ISIJ Int, 53, 185 (2013). ISIJ Int, 54, 2039 (2014).