Oxidation-resistant high-strength carbonaceous material.

摘要

The carbonaceous body of the invention is prepared by shaping and sintering a uniform powdery mixture composed of a powder of a low-temperature coke, a powder of boron carbide and a powder of silicon carbide in such a proportion that the weight proportion of the boron carbide and the silicon carbide is in the range from 2:98 to 80:20 and the volume proportion of the coke powder and the combination of the boron carbide and silicon carbide is in the range from 50:50 to 95:5. The carbonaceous body thus obtained is highly resistant against air oxidation even at a temperature of 1400 °C in addition to the outstandingly high mechanical strengths in comparison with conventional carbonaceous shaped materials such as artificial graphite.