ChemInform Abstract: PREPARATION OF HIGH-DENSITY SILICON NITRIDE BY A GAS-PRESSURE SINTERING PROCESS

1982 ◽  
Vol 13 (16) ◽  
Author(s):  
C. GRESKOVICH
Keyword(s):  
Silicon Nitride ◽  
Gas Pressure ◽  
High Density ◽  
Sintering Process ◽  
Gas Pressure Sintering

Defects Analysis of Large Size Silicon Nitride Balls Sintered by Gas Pressure Sintering

2010 ◽  
Vol 434-435 ◽  
pp. 61-63
Author(s):  
Feng Sun ◽  
Wei Ru Zhang ◽  
Ting Yan Tian ◽  
Xiang Hong Teng ◽  
Min Chao Ru ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Silicon Nitride ◽  
Temperature Gradient ◽  
Raw Materials ◽  
Gas Pressure ◽  
Sintering Process ◽  
The Core ◽  
Large Size ◽  
Defects Analysis ◽  
Gas Pressure Sintering

The sections of Φ55mm silicon nitride balls, sintered by gas pressure sintering were analyzed. The results show that temperature gradient during of the sintering process from the surface to the core of large size silicon nitride balls occurred because of the lower thermal conductivity of Si3N4. With the diameter increasing, the temperature gradient was more visible. The impurity of raw materials, such as free Si, free C and other metal oxides, like the SiO2 could produce gas, such as SiO, CO and so on, during the sintering process through the thermodynamic analysis. The producing gas exhausted more difficultly with the diameter of silicon nitride balls increasing. These factors were the most important to the defects of large size silicon nitride balls during the sintering process and made cracks and crescent on the surface of balls.

Grain Growth During Gas-Pressure Sintering of beta-Silicon Nitride

1990 ◽  
Vol 73 (8) ◽  
pp. 2441-2445 ◽  
Author(s):  
M. Mitomo ◽  
M. Tsutsumi ◽  
H. Tanaka ◽  
S. Uenosono ◽  
F. Saito
Keyword(s):  
Silicon Nitride ◽  
Grain Growth ◽  
Gas Pressure ◽  
Gas Pressure Sintering

scholarly journals Gas-Pressure Sintering of β-Silicon Nitride Containing Y2O3 and Nd2O3

1992 ◽  
Vol 100 (1162) ◽  
pp. 826-829 ◽  
Author(s):  
Naoto HIROSAKI ◽  
Motohide ANDO ◽  
Yoshio AKIMUNE ◽  
Mamoru MITOMO
Keyword(s):  
Silicon Nitride ◽  
Gas Pressure ◽  
Gas Pressure Sintering
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