Preparation of Alpha Alumina Fine Powders by Hydrothermal Oxidation Method

Masahiro Yoshimura; Shin Ya Kikugawa; Shigeyuki Sōmiya

doi:10.2497/jjspm.30.207

Preparation of Alpha Alumina Fine Powders by Hydrothermal Oxidation Method

Masahiro Yoshimura, Shin Ya Kikugawa, Shigeyuki Sōmiya

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	207-210
Number of pages	4
Journal	journal of the japan society of powder and powder metallurgy
Volume	30
Issue number	5
DOIs	https://doi.org/10.2497/jjspm.30.207
Publication status	Published - 1983 Jan

All Science Journal Classification (ASJC) codes

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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title = "Preparation of Alpha Alumina Fine Powders by Hydrothermal Oxidation Method",

abstract = "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.",

author = "Masahiro Yoshimura and Kikugawa, {Shin Ya} and Shigeyuki Sōmiya",

year = "1983",

month = jan,

doi = "10.2497/jjspm.30.207",

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AU - Kikugawa, Shin Ya

AU - Sōmiya, Shigeyuki

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N2 - 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.

AB - 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.

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ER -

Preparation of Alpha Alumina Fine Powders by Hydrothermal Oxidation Method

Abstract

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