Multifunctional hetero-modulus composites in the B4C-BN-TiC-SiC-C system

作者：Kovziridze Z^*; Nizharadze N; Tabatadze G; Nikoleishvili E; Mestvirishvili Z; Kinkladze V

来源：Journal of the European Ceramic Society, 2011, 31(10): 1921-1926.

DOI：10.1016/j.jeurceramsoc.2011.01.017

Experiments have been carried out to develop multifunctional composites with improved properties and structure for use in air turbines, ballistic armor, cutting tools and atomic reactors. For optimization of the sintering process, microstructure improvement and increased plasticity we used MgO, Y2O3 additives. The composites contained carbon fiber (S-242 L-av = 370 mu m, d = 13 mu m) the carbide stoichiometric composition was maintained. Sintering was by hot pressing (25 MPa) in vacuum in the interval of 1800-1900 degrees C with dwell time 5-7 min. Structural analysis proved the homogeneous structure of the composite. The properties satisfy ISO standards. In summary, H-v = 24 GPa, compressive strength = 2300 MPa, HRA = 94, bending strength = 500-600 MPa.

• 出版日期2011-9