The evolution of the multi-scale microstructure a (Zr,Ta)B2 solid solution was studied as function time and temperature. ceramics were produced by hot pressing mixture ZrB2 with 15 vol% TaSi2 followed annealing at 2100 °C. Formation super-saturated led to precipitation TaC nano-needles within micron-sized boride grain matrix. Phase stability diagrams used define conditions partial pressure sint...

The impact of Si3N4 content on the hardness and microstructural developments ZrB2-SiC material has been investigated thoroughly in present investigation. Having prepared raw materials a jar mill, samples containing various amounts were hot-pressed at 1850 °C. Furthermore, XRD, FESEM, HRTEM utilized to evaluate microstructure samples. formation in-situ h-BN was proved by mentioned methods. Also,...