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The manufacturing conditions, such as the amount of BeO sintering aid, the temperature and the pressure of hot-pressing on SiC ceramics having high thermal con ductivity and high electrical resistivity were studied. SiC ceramics with addition of 2.0wt% of BeO hot pressed at 2050•Ž, 30MPa for 1h gave the high ther mal conductivity of 270W/m•EK and the high electrical resistivity of 4•~1013ƒ¶•Ecm. The effects of impurities were also studied. The BN addition decreased the ther mal conductivity, while AlN caused the decrease of the electrical resistivity.

Influence of Manufacturing Conditions on the Characteristics of SiC Ceramics with Addition of BeO