High aspect ratio β-Si3N4 grain growth

被引：28

作者：

Perera, DS ^{[1
]}

Mitchell, DRG ^{[1
]}

Leung, S ^{[1
]}

机构：

[1] Australian Nucl Sci & Technol Org, Div Mat, Menai, NSW 2234, Australia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 06期

关键词：

aspect ratio; grain growth; microstructure-final; Si3N4;

D O I：

10.1016/S0955-2219(99)00201-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

It has been shown by others that high aspect ratio beta-Si3N4 grains formed in-situ on sintering lead to high fracture toughness in Si3N4 ceramics. In this work beta-Si3N4 powder was sintered at 1750 degrees C for varying times with Y2O3, La2O3, SiO2, and CaO additives. The microstructure of the materials was examined by electron microscopy and microanalysis. The beta-Si3N4 grain growth rate was controlled by diffusion through the liquid phase. A maximum aspect ratio of about 20 was observed for beta-Si3N4 grains heated for 6 h and was dependent on the chemistry of the liquid phase present. The formation of high aspect ratio Si3N4 at a relatively low temperature and short sintering times is discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：789 / 794

页数：6

共 50 条

[31] Preparation, Properties and Growth Mechanism of Low-Cost Porous Si3N4 Ceramics with High Levels of β-Si3N4 Powders
State Key Laboratory for Mechanical of Materials, Xi’an Jiaotong University, Shaanxi, Xi’an
710049, China
Silicon, 1876, 4 (1357-1367):
[32] β-Si3N4及添加β-Si3N4的α-Si3N4的气氛加压烧结
张宝林
庄汉锐
罗新宇
李文兰
硅酸盐通报, 1999, (02) : 37 - 41+47
[33] Investigation of Si3N4–TiN/Si3N4–Si3N4 trilayer composites with residual surface compression
Jow Lay Huang
Feng Chi Chou
Horng Hwa Lu
Journal of Materials Research, 1997, 12 : 2357 - 2365
[34] Laser surface nanostructuring for reliable Si3N4/Si3N4 and Si3N4/Invar joined components
Salvo, Milena
Casalegno, Valentina
Suess, Manuela
Gozzelino, Laura
Wilhelmi, Christian
CERAMICS INTERNATIONAL, 2018, 44 (11) : 12081 - 12087
[35] SI3N4 GRAIN-BOUNDARY INVESTIGATION BY HREM
SHULIN, W
CHEN, YT
JEFFERSON, DA
JOURNAL OF METALS, 1981, 33 (09): : A31 - A31
[36] Effect of grain size and grain structure on the thermal conductivity of β-Si3N4
Akimune, Yoshio
Munakata, Fumio
Matsuo, Kazuo
Okamoto, Yusuke
Hirosaki, Naoto
Satoh, Chikai
Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, 1999, 107 (1252): : 1180 - 1182
[37] Effect of grain size on the thermal conductivity of Si3N4
Natl. Indust. Res. Inst. of Nagoya, Hirate-cho 1-1, Kita-ku, Nagoya 462, Japan
不详
J Am Ceram Soc, 3 (777-779):
[38] Effect of grain size on the thermal conductivity of Si3N4
Watari, K
Hirao, K
Toriyama, M
Ishizaki, K
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1999, 82 (03) : 777 - 779
[39] Wettability of PdNi(Co)-Cr alloys on Si3N4 ceramic and joining of Si3N4 to Si3N4
Hua-Ping Xiong
Bo Chen
Wan-Lin Guo
Lei Ye
Welding in the World, 2015, 59 : 33 - 44
[40] Effect of grain size and grain structure on the thermal conductivity of β-Si3N4
Akimune, Y
Munakata, F
Matsuo, K
Okamoto, Y
Hirosaki, N
Satoh, C
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN, 1999, 107 (12) : 1180 - 1182

← 1 2 3 4 5 →