| 摘要 |
PURPOSE:To obtain a highly functional carbon/ceramic composite material having a homogeneous and dense ceramic coating film formed on the surface of a carbonaceous material or the inner surface of the pores of the material. CONSTITUTION:A polymer sol produced by hydrolyzing a metal alkoxide solution is impregnated under reduced or positive pressure into a porous carbonaceous material having an average pore diameter of 50-200mum and a porosity of 50-70% and the polymer sol is converted into an oxide and/or a carbide by heat-treating in a non-oxidizing atmosphere at >=500 deg.C. The metal of the metal alkoxide is preferably Ti, Al, Zr, Si, B or Mg. |
