In the present work, densification behavior and mechanical features (fracture toughness Vickers hardness) of undoped TiN-doped ZrB2 ceramic materials, hot-pressed at 1800 ºC under 15 MPa for 1 hr, were studied. The addition only 5 wt% TiN into has resulted in an increase its relative density from 83% to 90 %. Removal oxide contaminations like B2O3 via chemical reactions with new secondary phase...

Mechanical properties and microstructure were compared for zirconium diboride two solid solutions containing 3 6 at% tantalum diboride. X-ray diffraction indicated that the ceramics nearly phase-pure dissolved into ZrB2 lattice to form (Zr,Ta)B2 solutions. Microstructural analysis samples achieved full relative density with average grain sizes ranged from 3−5 μm. The three compositions had simi...