... Mohs)9.5 Application of Nano Scale Beta Silicon Carbide Whisker:1. Composite in space shuttle fuselage, ... Protective armor in tank and armored car5. Ceramic series: ceramic cutting tool, special purpose structural ceramics, ... bulletproof ceramics, piezoelectric ceramics, ceramic seals, thermocouple device, ceramic bearing, heat-resistant ceramic, ceramic grassroots, high-frequency ceramics, textile ...