Hydrothermal Reaction Sintering of High Density Sintered Oxides

  • Shigeyuki Sōmiya

Abstract

Hydrothermal Reaction Sintering is one of methods to produce high density oxides ceramics. Oxide formation occurs between metal and high temperature and high pressure solutions at certain temperature, pressure and time.
$$ Me + {H_2}O \to Me{O_X} + {H_2} $$
Grain size of sintered oxides is smaller than that of starting metal powders. Characteristics of hydrothermal reaction sintering oxides are as follows:
  1. 1)

    Low temperature sintering — able to make sintered body even materials have high vapor pressure, decomposition, and/or transitions.

     
  2. 2)

    Able to make a very fine grain size body.

     
  3. 3)

    Able to make high purity body.

     
  4. 4)

    Able to make high density body.

     
  5. 5)

    Able to make uniform microstructure.

     
  6. 6)

    Able to save energy due to low temperature sintering.

     
  7. 7)

    Able to control valency.

     

Keywords

Relative Density Hydrothermal Reaction Sinter Time Sintered Body Monoclinic Zirconia 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1).
    Shin-ichi Hirano and Shigeyuki Sōmiya “Synthesis and Sintering of Magnetite under Hydrothermal Conditions” The 12 Symposium on Basic Ceramics, p.33, January 30, 1974Google Scholar
  2. 2).
    Shigeyuki Sōmiya and Shin-ichi Hirano “Sintering of Magnetite” Showa 50 nen (1975) Sogokenkyu; Mechanism of Mass Transport in Oxide System p.33 (1976); Chairman Wazo KomatsuGoogle Scholar
  3. 3).
    Shin-ichi Hirano and Shigeyuki Somiya “Hydrothermal Crystal Growth of Magnetite in the Presence of Hydrogen” J. Cryst. Growth; 35 [3] [Oct.] 273–278 (1976)CrossRefGoogle Scholar
  4. 4).
    Shin-ichi Harano and Shigeyuki Sōmiya “Crystal Growth of Magnetite under Hydrothermal Condition with Hydrogen” Forth International Conference on Crystal Growth, March, 1974 Tokyo; Cellected Abstracts 683–4 (1974)Google Scholar
  5. 5).
    Shin-ichi Hirano and Shigeyuki Sōmiya “Sintering and Crystal Growth of Magnetite under Hydrothermal Conditions” Sogo Kenkyu; Diffusion and Sintering Mechanism in Inorganic Materials p.22 (1975) Chairman Yasumichi OishiGoogle Scholar
  6. 6).
    Shin-ichi Hirano and Shigeyuki Sōmiya “Synthesis and Sintering of Wűstite under Hydrothermal Conditions” Abstracts for 1974 Annual Meeting of the Ceramic Society p.116 May 29 (1974)Google Scholar
  7. 7).
    Masahiro Yoshimura and Shigeyuki Sōmiya “Fabrication of Dense, Non-stabilized ZrO2 Ceramics by Hydrothermal Reaction Sintering” J. Am. Ceram. Soc, 59 [2] (Feb.) 256 (1980)Google Scholar
  8. 8).
    Masahiro Yoshimura and Shigeyuki Sōmiya “Hydrothermal Reaction Sintering of Monoclinic Zirconia” Advances in Ceramics, Vol.3, Science and Technology of Zirconia 455–463 (1981) Am. Ceram. Soc., Ed. by A. H. Heuer and L. W. HobbsGoogle Scholar
  9. 9).
    Masahiro Yoshimura and Shigeyuki Sōmiya “Synthesis and Sintering of Zirconia Fine Powders by Hydrothermal Reactions From Zirconium Metal and High-Temperature High Pressure Solutions” Proceedings of the Round Table Conference on Sintering, September, 1981 417–42, Ed. by Kolar, et al.Google Scholar
  10. 10).
    Shigeyuki Sōmiya and Masahiro Yoshimura “Hydrothermal Reaction Sintering of Oxides” Sogo Kenkyu (A) “Formation Processing of Inorganic Materials and its Evaluation” — No. 435044; Chairman Toshiyuki Sata p. 69–75 (March, 1977)Google Scholar
  11. 11).
    Shin-ichi Harano and Shigeyuki Sōmiya “Hydrothermal Reaction Sintering of Pure Cr2O3” J. Am. Ceram. Soc., 59 [11.12] 534 (1976)CrossRefGoogle Scholar
  12. 12).
    Shigeyuki Somiya, Shin-ichi Hirano, Masahiro Yoshimura Shuichi Itoh and Hideyuki Kanai “Hydrothermal Reaction Sintering of Cr2O3 and Iron Oxides” Proceedings of the International Symposium on Factors in Densification and Sintering of Oxide and Non-oxide Ceramics, 1978 Japan, 267–277 (1979) Ed. by S. Somiya and S. Saito (Gakujutsu Bunken Fukyu-kai, Tokyo Institute of Technology, Meguro, Tokyo Japan)Google Scholar
  13. 13).
    Shigeyuki Sōmiya, Masahiro Yoshimura, and Hideyuki Kanai “Hydrothermal Reaction Sintering of Chromic Oxide” J. Materials Sci. Soc., 19 [3] 176–182 (1982) (Sept.)Google Scholar
  14. 14).
    Hideo Toraya, Masahiro Yoshimura and Shigeyuki Sōmiya “Hydrothermal Reaction Sintering of Monoclinic HfO2” J. Am. Ceram. Soc., 65 [9] 1–159-C-160 (1982)Google Scholar
  15. 15).
    Hideo Toraya, Masahiro Yoshimura and Shigeyuki Sōmiya, Preparation of Monoclinic Hafnia Fine Powders by Hydrothermal Oxidation Method, J. Am. Ceram. Soc., 65 [5] C–72, 1982Google Scholar
  16. 16).
    Masahiro Yoshimura, Shen-tan Song and Shigeyuki Sōmiya “Hydrothermal Synthesis and Sintering of LaCrO3 Ferrites, Proceeding of the International Conference September-October 1980 Japan 429–432Google Scholar
  17. 17).
    Shigeyuki Sōmiya, Shin-ichi Hirano, Tamotsu Fukuda and Masahisa Sawada “Problems in Design and Applications of Internal Heating High Pressure Gas Apparatus up to 1000 kg/cm2, up to 1500°C” Koatsu. Gasu 10 [6] Dec. 16–27 (1973)Google Scholar

Copyright information

© Elsevier Science Publishers LTD 1989

Authors and Affiliations

  • Shigeyuki Sōmiya
    • 1
  1. 1.Laboratory for Hydrothermal Syntheses Research Laboratory of Engineering MaterialsTokyo Institute of TechnologyMidori, YokohamaJapan

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