A reversible high-pressure second-order phase transition in silicon carbide ceramics SiC–BeO

Abstract

Experimental measurements of the effect high pressure and temperature have on the thermal conductivity of silicon carbide SiC–BeO ceramics are presented. The pressure is varied in an interval of up to 400MPa; temperature, in the range of 273–523 K. The results reveal there is a reversible second-order phase transition at pressures of 100–150 MPa.