scholarly journals Preparation of pore gradient silicon nitride ceramics by a high-velocity oxy-fuel spraying technique

2009 ◽  
Vol 117 (1364) ◽  
pp. 445-448
Author(s):  
Fei CHEN ◽  
Qiang SHEN ◽  
Julie M. SCHOENUNG ◽  
Lianmeng ZHANG
Keyword(s):  
Silicon Nitride ◽  
High Velocity ◽  
Nitride Ceramics ◽  
Pore Gradient

Fabrication of Silicon Nitride Ceramics with Pore Gradient Structure

2008 ◽  
Author(s):  
Zhang Lian-meng ◽  
Chen Fei ◽  
Shen Qiang ◽  
Yan Fa-qiang ◽  
Glaucio H. Paulino ◽  
...  
Keyword(s):  
Silicon Nitride ◽  
Gradient Structure ◽  
Nitride Ceramics ◽  
Pore Gradient

Microstructure, toughness and flexural strength of self-reinforced silicon nitride ceramics doped with yttrium oxide and ytterbium oxide

2001 ◽  
Vol 201 (2) ◽  
pp. 238-249 ◽  
Author(s):  
Y. S. Zheng ◽  
K. M. Knowles ◽  
J. M. Vieira ◽  
A. B. Lopes ◽  
F. J. Oliveira
Keyword(s):  
Silicon Nitride ◽  
Flexural Strength ◽  
Yttrium Oxide ◽  
Ytterbium Oxide ◽  
Nitride Ceramics

Effect of α/β phase ratio on microstructure and mechanical properties of silicon nitride ceramics

2001 ◽  
Vol 16 (8) ◽  
pp. 2264-2270 ◽  
Author(s):  
Hirokazu Kawaoka ◽  
Tomohiko Adachi ◽  
Tohru Sekino ◽  
Yong-Ho Choa ◽  
Lian Gao ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Silicon Nitride ◽  
Phase Ratio ◽  
Phase Content ◽  
Sintering Process ◽  
Β Phase ◽  
Nitride Ceramics ◽  
Pulse Electric ◽  
Sintering Condition ◽  
Sintered Materials

Highly densed silicon nitride ceramics with various α/β phase ratios were produced by pulse electric current sintering process. The β-phase content of Si3N4 in sintered materials varied from 20 to 100 wt% depending on the sintering condition. The microstructure was observed by scanning electron microscopy and investigated by image analysis. Young's modulus, hardness, fracture toughness, and strength were strongly dependent on the α/β phase ratio. The fracture toughness increased from 4.6 MPa m1/2 for 20-wt% b-phase content to 8.2 MPa m1/2 for 95-wt% β-phase content, and the fracture strength showed a maximum value of about 1.6 GPa at 60-to-80-wt% β-phase content.

Metallizing of silicon nitride ceramics

1986 ◽  
Vol 2 (3) ◽  
pp. 241
Author(s):  
Akio Sayano ◽  
Shun-ichiro Tanaka ◽  
Kazuo Ikeda
Keyword(s):  
Silicon Nitride ◽  
Nitride Ceramics

Dissolution Rate of Silicon Nitride Ceramics into Molten CaO-Al2O3-SiO2 Slags

2005 ◽  
Vol 80 (4) ◽  
pp. 925-932 ◽  
Author(s):  
Shoichirou Taira ◽  
Yasuyuki Yamasaki ◽  
Kunihiko Nakashima ◽  
Katsumi Mori
Keyword(s):  
Silicon Nitride ◽  
Dissolution Rate ◽  
Nitride Ceramics
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