ZrC–ZrB2 matrix composites with enhanced toughness prepared by reactive hot pressing

ZrC–ZrB2 matrix composites were prepared by reactive hot pressing at 1900 °C using ZrC and LaB6 as raw materials. A new layered phase was found, which made the fracture toughness of composites enhanced significantly. The incorporation of SiC further improved fracture toughness and flexural strength of the composites.