PREPARATION OF MIXED FINE Al//2O//3-HfO//2 POWDERS BY HYDROTHERMAL OXIDATION.

Hideo Toraya, Masahiro Yoshimura, Shigeyuki Somiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Mixed Al//2O//3-HfO//2 powders were prepared by hydrothermal oxidation of the intermetallic compound HfAl//3 and the mixture HfAl//3-4Al at 400 degree to 700 degree C under 100 MPa. Monoclinic HfO//2 with particle sizes of 10-20 nm was finely dispersed among the alpha -Al//2O//3 with sizes ranging from nanometers to micrometers. The temperature-time dependence of the reactions of Al, HfAl//3, and HfAl//3-4Al with H//2O was examined.

Original languageEnglish
Title of host publicationAdvances in Ceramics
EditorsNils Claussen, Manfred Ruehle, Arthur Harold Heuer
PublisherAmerican Ceramic Soc Inc
Pages806-815
Number of pages10
ISBN (Print)0916094642
Publication statusPublished - 1984 Dec 1

Publication series

NameAdvances in Ceramics
Volume12
ISSN (Print)0730-9546

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Toraya, H., Yoshimura, M., & Somiya, S. (1984). PREPARATION OF MIXED FINE Al//2O//3-HfO//2 POWDERS BY HYDROTHERMAL OXIDATION. In N. Claussen, M. Ruehle, & A. H. Heuer (Eds.), Advances in Ceramics (pp. 806-815). (Advances in Ceramics; Vol. 12). American Ceramic Soc Inc.