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Thermal analysis of powdered alumina materials

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Abstract

How a DSC result is influenced by the particle size distribution of a powder sample is shown, and a simple and optimal method to be included in a routine DSC analysis (e.g., purity determination) to improve the reliability of the analysis is proposed. In case ofα-Al2O3 powder, most reliable heat capacity data can be obtained by preparing a powder with a self-similar particle size distribution with a distribution constant of 0.7, and by compressing it under a pressure of 1.5 MPa for a duration of 5 min or longer.

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Authors and Affiliations

  1. Department of Electronics and Informatics, North Shore College of SONY Institute, Atsugi, 243, Kanagawa

    Sadao Tsutsumi

  2. School of Education, Waseda University, Shinjuku, 160-50, Tokyo, Japan

    Riko Ozao, Hiroshi Ogura, Moyuru Ochiai & Sadao Tsutsumi

Authors
  1. Riko Ozao
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  2. Hiroshi Ogura
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  3. Moyuru Ochiai
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  4. Sadao Tsutsumi
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Additional information

This work is partially supported by the Research Fund of North Shore College of SONY Institute. R.O. wishes to express her gratitude to the support.

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Ozao, R., Ogura, H., Ochiai, M. et al. Thermal analysis of powdered alumina materials. Journal of Thermal Analysis 49, 961–970 (1997). https://doi.org/10.1007/BF01996782

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  • DOI: https://doi.org/10.1007/BF01996782

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