Abstract
The composition 20% TiB2-55% TiC-25% SiC (mol%) was selected and the hot pressing parameters were optimized using optimal design. The optimized hot-pressed material had a bend strength > 1200 M Pa, a thermal shock resistance of 300 °C, and a bend strength at 1200 °C of 456 MPa. The pressureless sintering of the selected composite was optimized, with and without additives. Powders sintered without additives (2200 °C, 2 h) had a low density (92.2%) and strength (480 MPa). Carbon and boron additives led to higher densities (97.5%) but did not improve the strength.
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de Mestral, F., Thévenot, F. Ceramic composites: TiB2-TiC-SiC. J Mater Sci 26, 5561–5565 (1991). https://doi.org/10.1007/BF00553659
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DOI: https://doi.org/10.1007/BF00553659