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Synthesis of Sic Fine Particles by Gas-Phase Reaction Under Short-Time Microgravity

Published online by Cambridge University Press:  25 February 2011

Takeshi Okutani ,
Yoshinori Nakata ,
Masaakt Suzuki ,
Yves Maniette ,
Nobuyoshi Goto ,
Osamu Odawara  and
Kiyoshi Mori
Takeshi Okutani
Affiliation:
Government Industrial Development Laboratory, Hokkaido, 2-17 Tsuklsamu-Higashi, Toyohlra-ku, Sapporo 062, JAPAN
Yoshinori Nakata
Affiliation:
Government Industrial Development Laboratory, Hokkaido, 2-17 Tsuklsamu-Higashi, Toyohlra-ku, Sapporo 062, JAPAN
Masaakt Suzuki
Affiliation:
Government Industrial Development Laboratory, Hokkaido, 2-17 Tsuklsamu-Higashi, Toyohlra-ku, Sapporo 062, JAPAN
Yves Maniette
Affiliation:
Government Industrial Development Laboratory, Hokkaido, 2-17 Tsuklsamu-Higashi, Toyohlra-ku, Sapporo 062, JAPAN
Nobuyoshi Goto
Affiliation:
Hoxan Corporation, Nishi 1-Chome Kita 3-J0, Chuo-ku, Sapporo 060, JAPAN
Osamu Odawara
Affiliation:
Hoxan Corporation, Nishi 1-Chome Kita 3-J0, Chuo-ku, Sapporo 060, JAPAN
Kiyoshi Mori
Affiliation:
Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 227, JAPAN
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Abstract

SiC fine particles were synthesized by the gas-phase thermal decomposition of tetramethylsilane (Si(CH3)4) in hydrogen under microgravity of 10−4G for 10 sec. Rapid heating to the temperature over 800°C which is required for thermal decomposition of Si(CH3)4) under short-time microgravity was attained using a chemical oven where the heat of exothermic reaction of combustion synthesis of Ti-A1-4B composites was used as the heat source. Monodisperse and spherical SiC fine particles were synthesized under microgravity, whereas aggregates of SiC fine particles were synthesized under 1 G gravity. The SiC particles synthesized under microgravity (150-200 nm) were bigger in size and narrower in size distribution than those under 1 G gravity (100-150 nm).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 286: Symposium J – Nanophase and Nanocomposite Materials , 1992 , 113
Copyright
Copyright © Materials Research Society 1993

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References

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