Novel sustainable silicothermic synthesis of phase-pure TiB2 fine powder

Silicothermic synthesis of phase‐pure HfB2 fine powder

“…In our recent work on silicothermic synthesis of TiB 2 , the XRD analysis results showed that by introducing sodium oxysalts into the reactant mixtures, there were no evidential existence of Si, TiO 2 in the reacted mass after firing 3h at 900°C, indicating that introducing sodium oxysalts into the reactant mixtures obviously enhanced solubility of Si and TiO 2 in the melt, and would considerably facilitate the mass transfer and the synthesis reaction 27 . In this study, the facts that some amounts of silicon and HfO 2 still remained in the reacted mass after firing 3h at 1000°C seemed that introducing sodium oxysalts into the reactant mixtures could hardly enhance solubility of Si and HfO 2 in the melt.…”

Review on the Development of Titanium Diboride Ceramics

“…Reaction mechanism and microstructure of TiB2 powder synthesis: (a) gas phase method [35]; (b) SHS method [36,37]; (c) High energy ball-milling method [38]; (d) Carbon thermal reduction method [39]; (e) MSS method [40,41]; (f) Sol-gel method [42].…”

“…In Figure 4d, submicron-sized TiB2 particles (100-400 nm) exhibit hexagonal short-column morphologies, displaying excellent dispersion. These particles were identified as single crystalline TiB2 through SAED and XRD analysis [39]. To study the influence of raw precursor materials on the synthesis of TiB2 powders, Yu [55] et al studied the impact of different boron sources (B2O3, H3BO3, and HBO2) on the microstructure and final phase formation of TiB2 at different carbothermal temperatures.…”