• Title/Summary/Keyword: Furan resin derived carbon

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The Role of Inorganic Compounds Additions on the Matrix Microtexture Control of C/C Composite (무기화합물 첨가에 의한 C/C복합재료의 매트릭스 조직제어)

  • ;安田榮
    • Journal of the Korean Ceramic Society
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    • v.34 no.11
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    • pp.1151-1158
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    • 1997
  • Fracture of uni-directional carbon fiber reinforced carbon matrix composite is strongly dependent on the orientation of basal plane in graphite matrix when it is limited within matrix. The orientation of basal planes are vertically stacked to carbon fiber which results in the weakness for applied tensile or shear force in thermosetting resin derived-carbon matrix composite. Microtextural control of the matrix was tried through chemical interaction between metal carbides and furan resin derived-carbon matrix. SiC and TiO2 addition made the orientation disordered. However, porosity increased due to decomposition of SiC. Interfacial bonding could be controlled by TiO2 addition, but carbon fiber was considerably reacted with TiC during thermal treatment higher than 2$600^{\circ}C$. Therefore, it is desirable to control the thermal treatment temperature at which decomposition of SiC was not serious and TiC/C was not formed eutectoid.

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The Influence of Graphitic Structure on Oxidation Reaction of Carbon Materials (탄소재료의 산화반응에 미치는 흑연구조의 영향)

  • ;Eiichi Yasuda
    • Journal of the Korean Ceramic Society
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    • v.33 no.7
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    • pp.816-822
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    • 1996
  • Dependence of graphitic structure on oxidation of carbon materials was discussed using furan resin-derived carbon with inorganic compounds such as SiC and TiO2 Oxidation of carbon was governed by active site. I. e surface area regardless of the degree of graphitization. When oxidation was considered for not unit weight but unit area graphitization was important factor for oxidation so that the degree of graphitization increased the oxidation rate was delayed. Graphite (tiO2 addition) and turbostratic graphite(SiC addition) were oxidized through the same mechanism. In carbon materials with different structure components more than 2 oxidation of each component was different and amorphous component without the influence of additives on the surface was selectively oxidized in the intial oxidation stage.

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