Lukianova O A, Krasilnikov V V, Parkhomenko A A, Sirota V V
Belgorod National Research University, 85, Pobedy Str., 308015, Belgorod, Russia.
Institute of Hydrobiology of the National Academy of Sciences of Ukraine, 2, Geroyev Stalingrada ave., 04210, Kyiv, Ukraine.
Nanoscale Res Lett. 2016 Dec;11(1):148. doi: 10.1186/s11671-016-1365-1. Epub 2016 Mar 15.
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.
研究了通过冷等静压和自由烧结制备的新型Y2O3和Al2O3氧化物掺杂氮化硅陶瓷的微观结构和物理性能。还通过室温及高温下的X射线衍射研究了所制备材料的相组成。所制备的陶瓷具有Si5AlON7晶粒的微观结构，以及细晶粒的α-Si3N4和少量的Y2SiAlON5。由于细晶粒结构与改善的机械性能和小重量损失的有益结合，所述陶瓷对许多高温结构应用具有吸引力。
