Fabrication of macroporous silicon carbide ceramics by intramolecular carbothermal reduction of phenyl-bridged polysilsesquioxane

Joji Hasegawa, Kazuyoshi Kanamori, Kazuki Nakanishi, Teiichi Hanada

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Macroporous SiC ceramics were obtained from porous phenyl-bridged polysilsesquioxane prepared by a sol-gel method accompanied by spinodal decomposition subsequently subjected to intramolecular carbothermal reduction. By this method, we can obtain macroporous SiC ceramics with improved atomic-level homogeneity and controlled pore size more easily than by intermolecular carbothermal reduction using a mixture of SiO2 and carbon powder. Therefore, the resultant SiC ceramics have sufficiently high purity without washing with hydrofluoric acid to remove residual SiO 2.

Original languageEnglish
Pages (from-to)7716-7720
Number of pages5
JournalJournal of Materials Chemistry
Volume19
Issue number41
DOIs
Publication statusPublished - Oct 22 2009

Fingerprint

Carbothermal reduction
Silicon carbide
Hydrofluoric Acid
Fabrication
Spinodal decomposition
Hydrofluoric acid
Washing
Powders
Sol-gel process
Pore size
Carbon
polysilsesquioxane
silicon carbide

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

Cite this

Fabrication of macroporous silicon carbide ceramics by intramolecular carbothermal reduction of phenyl-bridged polysilsesquioxane. / Hasegawa, Joji; Kanamori, Kazuyoshi; Nakanishi, Kazuki; Hanada, Teiichi.

In: Journal of Materials Chemistry, Vol. 19, No. 41, 22.10.2009, p. 7716-7720.

Research output: Contribution to journalArticle

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