Microstructure of Spark Plasma-Sintered Silicon Nitride Ceramics

被引：35

作者：

Lukianova, O. A. ^{[1
]}

Novikov, V. Yu. ^{[1
]}

Parkhomenko, A. A. ^{[2
]}

Sirota, V. V. ^{[1
]}

Krasilnikov, V. V. ^{[1
]}

机构：

[1] Belgorod Natl Res Univ, 85 Pobedy Str, Belgorod 308015, Russia

[2] NAS Ukraine, Inst Solid State Phys Mat Sci & Technol, Acad Str 1, UA-61108 Kharkov, Ukraine

来源：

NANOSCALE RESEARCH LETTERS | 2017年 / 12卷

关键词：

Silicon nitride; Spark plasma sintering; Microstructure; Hardness;

D O I：

10.1186/s11671-017-2067-z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and phase composition of the high-content Al2O3-Y2O3-doped spark plasma-sintered silicon nitride were investigated. Fully dense silicon nitride ceramics with a typical alpha-Si3N4 equiaxed structure with average grain size from 200 to 530 nm, high elastic modulus of 288 GPa, and high hardness of 2038 HV were spark plasma sintered (SPSed) at 1550 degrees C. Silicon nitride with elongated beta-Si3N4 grains, higher hardness of 1800 HV, density of 3.25 g/cm(3), and Young's modulus 300 GPa SPSed at 1650 degrees C was also reviewed.

引用

页数：6

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