title: Microstructure and Phase Composition of Cold Isostatically Pressed and Pressureless Sintered Silicon Nitride.
abstract: The microstructure and physical properties of new Y2O3 and Al2O3 oxide-doped silicon nitride ceramics fabricated by cold isostatic pressing and free sintering were investigated. The phase composition of produced material was also studied by X-ray diffraction at room and elevated temperature. The fabricated ceramics featured a microstructure of Si5AlON7 grains with a fine-grained α-Si3N4 with a small amount of Y2SiAlON5. Described ceramics is attractive for many high-temperature structural applications due to beneficial combination of fine-grained structure with improved mechanical properties and small weight loss.
authors.affiliation: Belgorod National Research University, 85, Pobedy Str., 308015, Belgorod, Russia.
authors.forename: O A
authors.initials: OA
authors.lastname: Lukianova
authors.affiliation: Belgorod National Research University, 85, Pobedy Str., 308015, Belgorod, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Krasilnikov
authors.affiliation: Institute of Hydrobiology of the National Academy of Sciences of Ukraine, 2, Geroyev Stalingrada ave., 04210, Kyiv, Ukraine. parkhomenko@kipt.kharkov.ua.
authors.forename: A A
authors.initials: AA
authors.lastname: Parkhomenko
authors.affiliation: Belgorod National Research University, 85, Pobedy Str., 308015, Belgorod, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Sirota
keywords: Grain size; Microstructure; Phase composition; Silicon nitride