Oxidation Resistance and Graphitization of Boron Oxide Implanted Carbon/Carbon Composites

  • Joo, Hyeok-Jong (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Oh, In-Hwan (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Ahn, Il-Hwan (Department of Polymer Science and Engineering, Chungnam National University)
  • Received : 2004.07.27
  • Accepted : 2004.08.30
  • Published : 2004.09.30

Abstract

Chop molding composites and 2D carbon/carbon composites were manufactured by hot press molding method. Phenol resin of novolac type was used for matrix precursor and PAN-based carbon, PAN-based graphite and pitch-based carbon fiber were used for reinforcement and boron oxide was used for oxidation retardant. All of the composites were treated by $2000^{\circ}C$ and $2400^{\circ}C$ graphitization process, respectively. After graphitization process, amount of a boron residue in carbon/carbon composites is much according to irregularity of used raw materials. Under the presence of boron in carbon/carbon composites, catalytic effect of boron was a little at $2000^{\circ}C$ graphitization temperature. However, it was quite at $2400^{\circ}C$ graphitization.