The effect of adding nanocrystalline ZrO2 and submicron TiC to ultrafine Al2O3 on mechanical properties and the microstructure of the composites developed by hot pressing was investigated. It was shown that by means of hot pressing in argon atmosphere at the sintering temperature of 1500 °C one can obtain the composites of Al2O3-ZrO2-TiC with a fine structure and minimal porosity. It was shown that in the material a multi-scale hierarchical structure is formed, which possesses high physical and mechanical properties: the hardness and fracture toughness was 22 GPa and 5.2 MPa∗m1/2, respectively. It has been shown that mechanical properties of the composite are better than those of commercial composites based on aluminum oxide (Al2O3, ZTA, Al2O3-TiC) and are comparable to those of silicon nitride.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Publication status||Published - 8 Aug 2016|
|Event||International Seminar on Interdisciplinary Problems in Additive Technologies - Tomsk, Russian Federation|
Duration: 16 Dec 2015 → 17 Dec 2015
ASJC Scopus subject areas
- Materials Science(all)