Microstructure and Phase Composition of Cold Isostatically Pressed and Pressureless Sintered Silicon Nitride

被引：22
作者：
Lukianova, O. A. [2 ]
Krasilnikov, V. V. [2 ]
Parkhomenko, A. A. [1 ]
Sirota, V. V. [2 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Hydrobiol, 2 Geroyev Stalingrada Ave, UA-04210 Kiev, Ukraine
[2] Belgorod Natl Res Univ, 85 Pobedy Str, Belgorod 308015, Russia
来源：
NANOSCALE RESEARCH LETTERS | 2016年 / 11卷
关键词：
Silicon nitride; Microstructure; Grain size; Phase composition; MECHANICAL-PROPERTIES; STRENGTH; CERAMICS;
D O I：
10.1186/s11671-016-1365-1
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 alpha-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.
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页数：6
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