ZrB₂-based nanocomposites with and without carbon nanotubes (CNTs) as reinforcement were prepared at 1600 °C by spark plasma sintering. The effects of CNTs on the microstructure and mechanical properties of nano-ZrB₂ matrix composites were studied. The results indicated that adding CNTs can inhibit the abnormal grain growth of ZrB₂ grains and improve the fracture toughness of the composites. Th...

In order to clearly understand the details of ZrO₂ formation during ablation, high intensity continuous laser was chosen to irradiate ZrB₂/SiC. The results reveal that there are two different modes of ZrO₂ formation depending on whether liquid SiO₂ is present. When liquid SiO₂ is present, ZrO₂ generated by the oxidation of ZrB₂ is firstly dissolved into SiO₂. Then, ZrO₂ will precipitate again, ...

The sinterability, microstructure, and mechanical properties of pure TiB2- CrB2-doped ZrB2 prepared by spark plasma sintering were investigated. solid solutions synthesized the complete borothermal reduction to form (Zr0.95Ti0.05)B2 (Zr0.95Cr0.05)B2. results showed that solution yielded smaller particle size than sinterability was also improved with use solutions, as evidenced an increase relat...

Ultra-high temperature ceramics (UHTCs) are most recently getting much attention for structural parts of hypersonic missiles with their cruising speed more than Mach 5. Most the UHTCs poor sinterability carbides, nitrides, and borides. Therefore, they have been studied developed a long time. However, there still many problems to solve. In this paper, based on solid-state reaction presented as a...