Synthesis of mono-phase, hexagonal plate-like Al4SiC4 powder via a carbothermal reduction process

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  • LEE Jin-Seok
    Non-oxide Ceramics Group, Nano Ceramics Center, National Institute for Materials Science
  • LEE Sea-Hoon
    Non-oxide Ceramics Group, Nano Ceramics Center, National Institute for Materials Science
  • NISHIMURA Toshiyuki
    Non-oxide Ceramics Group, Nano Ceramics Center, National Institute for Materials Science
  • TANAKA Hidehiko
    Non-oxide Ceramics Group, Nano Ceramics Center, National Institute for Materials Science

書誌事項

タイトル別名
  • Synthesis of mono-phase, hexagonal plate-like Al<sub>4</sub>SiC<sub>4</sub> powder via a carbothermal reduction process
公開日
2008
DOI
  • 10.2109/jcersj2.116.717
公開者
公益社団法人 日本セラミックス協会

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説明

Mono-phase and hexagonal plate-like Al4SiC4 powders were successfully synthesized using a mixture of Al(OH)3, SiO2 and phenolic resin via the carbothermal reduction process. Two-step reaction was compartmentally observed during calcination; the carbothermal reduction of SiO2 between 1300 and 1600°C and that of Al2O3 above 1500°C. X-ray diffraction data indicated the orientation of the compacted powders along c-axis due to the stacking of plate-like Al4SiC4 powders. Microscopic observation showed that the synthesized powders were mainly hexagonal platelets. The main synthetic mechanism of the ternary carbide powder during the carbothermal reduction process was gas-solid reaction. Possible reaction mechanisms which are responsible for the synthesis of Al4SiC4 by the carbothermal reduction process are discussed.

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