Preparation of Alpha Alumina Fine Powders by Hydrothermal Oxidation Method

Masahiro Yoshimura, Shin Ya Kikugawa, Shigeyuki Sōmiya

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Fine powders of α-AlaO3 were prepared by hydrothermal oxidation of Al metal powders. Under 100 MPa, Al yielded Boehmite between 200°C and 400°C, and finally produced α-Al2O3 above 600°C in the open capsule. On the other hand, unreacted Al metal remained until 700°C in the sealed capsule. This hydrothermal oxidation method is one of the methods to prepare fine α-Al2O3 particle having around 1 μm in size.

Original languageEnglish
Pages (from-to)207-210
Number of pages4
Journaljournal of the japan society of powder and powder metallurgy
Issue number5
Publication statusPublished - 1983 Jan

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry


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