Cyclic formation of boron suboxide crystallites into star-shaped nanoplates

Synthesis of Multilayered Star‐Shaped B6O Particles Using the Seed‐Mediated Growth Method

“…These super-hard materials exhibit high hardness and chemical resistance, and are considered to be a natural choice for lightweight armor applications. [1][2][3][4] However, unlike other commonly used ballistic ceramics, B 4 C and B 6 O naturally exhibit low fracture toughness. 3,4 It is obvious that the mechanical properties of B 6 O are strongly dependent on microstructure development during the consolidation process.…”

“…[1][2][3][4] However, unlike other commonly used ballistic ceramics, B 4 C and B 6 O naturally exhibit low fracture toughness. 3,4 It is obvious that the mechanical properties of B 6 O are strongly dependent on microstructure development during the consolidation process. High-quality B 6 O ceramics usually exhibit excellent crystallinity, stoichiometry, and mechanical properties, with the synthesis of star-like structures being reported only at high pressure.…”

“…3,4 It is obvious that the mechanical properties of B 6 O are strongly dependent on microstructure development during the consolidation process. High-quality B 6 O ceramics usually exhibit excellent crystallinity, stoichiometry, and mechanical properties, with the synthesis of star-like structures being reported only at high pressure. 3 For ceramic powders synthesized at ambient pressure, their oxygen deficiency level (i.e., x < 1 in B 6 O x ) and poor sinterability remain as the main limiting factors.…”

“…High-quality B 6 O ceramics usually exhibit excellent crystallinity, stoichiometry, and mechanical properties, with the synthesis of star-like structures being reported only at high pressure. 3 For ceramic powders synthesized at ambient pressure, their oxygen deficiency level (i.e., x < 1 in B 6 O x ) and poor sinterability remain as the main limiting factors. [5][6][7] Xie et al 6 synthesized star-shaped B 6 O nanoplates through a liquid-phase reaction between amorphous boron and boron oxide at ambient pressure.…”

“…3 For ceramic powders synthesized at ambient pressure, their oxygen deficiency level (i.e., x < 1 in B 6 O x ) and poor sinterability remain as the main limiting factors. [5][6][7] Xie et al 6 synthesized star-shaped B 6 O nanoplates through a liquid-phase reaction between amorphous boron and boron oxide at ambient pressure. The formation of the five-pointed star-shaped crystal was also attributed to cyclic twinning of B 6 O crystals.…”