화학공학소재연구정보센터
Journal of Materials Science, Vol.36, No.3, 673-677, 2001
Preparation and properties of TaC/C/TaC similar to TaC composite micro-tubes by vapor phase tantalizing of the regular carbon micro-coils/micro-tubes
TaC/C/TaC similar to TaC composite micro-tubes were prepared by the vapor phase tantalizing of the regular carbon micro-coils/micro-tubes, and the preparation conditions and some properties were examined. The carbon micro-coils with a tube-like morphology were tantalized from the surface to the core of the carbon fibers with full preservation of the tube-like morphology to form TaC/C/TaC similar to TaC composite micro-tubes. The bulk electrical resistivity and specific surface area of the TaC/C/TaC similar to TaC composite micro-tubes were 4 x 10(-3) to 5 x 10(-4) Omega .m and 5 x 10(3) to 2 x 10(4) m(2)/kg, respectively, depending on the tantalized ratio and the bulk density.