Thermal and Mechanical Properties of SiC-TiC^sub 0.5^N^sub 0.5^ Composites

... composites were fabricated from β-SiC and TiN powders with 2 vol% equimolar ... additives by conventional hot pressing. Thermal and mechanical properties of the ... composites were investigated as a function of initial TiN content. Relative densities of =98.9% were achieved for all samples. The addition of a small amount of TiN increased thermal conductivity, flexural strength, and fracture toughness of SiC ceramics. However, further addition of TiN in excess of 10 and 20 vol% deteriorated both thermal conductivity and flexural strength of the composites, respectively. In contrast, the fracture toughness of the composites increased continuously from 4.2 to 6.2 ... with increasing initial TiN content from 0 to 35 vol%, due to crack deflection by ... The maximum values of thermal conductivity and flexural strength were 224 W/m K for a 2 vol% ... and 599 MPa for a 10 vol% ... composite. (ProQuest: ... denotes formulae/symbols omitted.)