The Oxidation Behavior of ZrB2-Based Mixed Boride
Zirconium diboride based composites containing silicon carbide with relative densities in excess of 99 % were produced by hot-pressing. Oxidation test was conducted in air at 1500 °C. ZrB2-SiC composite showed relatively low oxidation resistance due to the non-uniform surface silica-rich layer. But in case of mixed boride-SiC composites further improvement of the oxidation performance were observed due to the phase separation in the surface silica-rich layer.
Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo
S. J. Lee and D. K. Kim, "The Oxidation Behavior of ZrB2-Based Mixed Boride", Key Engineering Materials, Vol. 403, pp. 253-255, 2009