We demonstrate a route to synthesize ultra high-temperature ceramic coatings of ZrB2 at temperatures below 1,300 K using Zr/B reactive multilayers. Highly textured crystalline ZrB2 is formed at modest temperatures, because of the absence of any oxide at the interface between Zr and B, and the very short diffusion distance that is inherent to the multilayer geometry. The kinetics of the ZrB2 for...

Abstract The main goal of this study is optimization of densification of ZrB2-SiC composites reinforced with chopped Cf prepared by SPS. Taguchi method is employed as statistical design of experiment (DOE) to optimize densification parameters including SiC, Cf, MoSi2, HfB2 and ZrC content, milling time of Cf and SPS parameters such as temperature, time and pressure. Each of these factors ...

• ZrB2-SiC ceramics were joined using Ni foil filler and spark plasma sintering. Joining mechanisms of identified. Mechanical tests performed to evaluate the mechanical properties fabricated joints. Oxidation behaviour joint was characterised analysed over a wide range temperature. is crucial for ultra-high temperature (UHTCs) be used in demanding environments due difficulty manufacturing large...