Journal of thermal analysis

, Volume 49, Issue 2, pp 961–970 | Cite as

Thermal analysis of powdered alumina materials

  • Riko Ozao
  • Hiroshi Ogura
  • Moyuru Ochiai
  • Sadao Tsutsumi
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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.

Keywords

distribution constant DSC powder compact Rosin-Rammler particle size distribution thermal resistance 

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Copyright information

© Akadémiai Kiadó 1997

Authors and Affiliations

  • Riko Ozao
    • 2
  • Hiroshi Ogura
    • 2
  • Moyuru Ochiai
    • 2
  • Sadao Tsutsumi
    • 1
    • 2
  1. 1.Department of Electronics and InformaticsNorth Shore College of SONY InstituteKanagawa
  2. 2.School of EducationWaseda UniversityTokyoJapan

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