Synthesis and characterization of single-walled carbon nanotube/silicon carbide composites

G. Yamamoto, K. Yokomizo, M. Omori, Y. Sato, T. Takahashi, T. Hashida, K. Motomiya, A. Okubo, S. Watanabe, K. Tohji

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

Abstract

Single-walled carbon nanotube (SWCNT)/SiC composites were successfully prepared by direct thermal decomposition of polycarbosilane (PCS) precursor. The SWCNT/SiC composites were prepared by the hot-pressing the SWCNTs-PCS (7:3 mass%) mixture at temperatures of 1000, 1400 and 1800°C under a pressure of 120 MPa. The effects of SiC synthesis and processing temperatures on the mechanical properties of the resultant composites were investigated by comparing the experimental data obtained from the SWCNT/SiC composites and the binder-free SWCNT solids. The XRD and TEM-EDS analyses revealed that the β-SiC was successfully prepared through direct thermal decomposition of PCS precursor. The specific modulus and strength of the SWCNT/SiC composites were always about 8 GPa/Mg/m3 and 20 MPa/Mg/m3 higher than those of the binder-free SWCNT solid under identical processing temperatures. Such remarkable stiffening and strengthening by SiC synthesis may be due to the load-transfer efficiency of SWCNTs in the SWCNT/SiC composites.

Original languageEnglish
Title of host publicationWATER DYNAMICS
Subtitle of host publication3rd International Workshop on Water Dynamics
Pages94-99
Number of pages6
DOIs
Publication statusPublished - 2006 May 15
EventWATER DYANMICS: 3rd International Workshop on Water Dynamics - Sendai, Japan
Duration: 2005 Nov 162005 Nov 17

Publication series

NameAIP Conference Proceedings
Volume833
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherWATER DYANMICS: 3rd International Workshop on Water Dynamics
CountryJapan
CitySendai
Period05/11/1605/11/17

Keywords

  • Hot-pressing method
  • Mechanical properties
  • Polycarbosilane
  • Single-walled carbon nanotube

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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