Liquid Phase Sintering of α-Si3N4 by Spark Plasma Sintering

2007 ◽  
pp. 1062-1064
Author(s):  
Fa Qiang Yan ◽  
Fei Chen ◽  
Qiang Shen ◽  
Lian Meng Zhang
Keyword(s):  
Liquid Phase ◽  
Spark Plasma Sintering ◽  
Liquid Phase Sintering ◽  
Plasma Sintering ◽  
Spark Plasma

scholarly journals Effect of Doped CeO with Si3N4 Powders on the Densification Mechanism During

2021 ◽  
Author(s):  
Yao Liu
Keyword(s):  
Liquid Phase ◽  
Relative Density ◽  
Stress Exponent ◽  
Spark Plasma Sintering ◽  
Liquid Phase Sintering ◽  
Creep Model ◽  
Stress Regime ◽  
Densification Mechanism ◽  
Plasma Sintering ◽  
Spark Plasma

Abstract The densification mechanism of doped CeO with Si3N4 powder during Spark Plasma Sintering (SPS) was investigated under temperatures ranging from 1500 to 1750 °C at soaking pressures of 30, 40, 50 MPa. Results showed that the relative density of Si3N4 ceramics sintered at 1650 °C and 30 MPa was 97.9%. A creep model was employed to determine the mechanism, which can be interpreted on the basis of the stress exponent (n). The results showed that the mechanism was controlled by liquid phase sintering at low effective stress regime (n=1).

Liquid Phase Sintering of α-Si3N4 by Spark Plasma Sintering

2007 ◽  
Vol 336-338 ◽  
pp. 1062-1064 ◽  
Author(s):  
Fa Qiang Yan ◽  
Fei Chen ◽  
Qiang Shen ◽  
Lian Meng Zhang
Keyword(s):  
Liquid Phase ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Liquid Phase Sintering ◽  
Sintering Behavior ◽  
Sintering Aids ◽  
Factors Influencing ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Si3n4 Ceramics

In this study, spark plasma sintering (SPS) was applied to prepare α-Si3N4 ceramics of different densities with magnesia, silicon dioxide, alumina as the sintering aids. The sintering behavior and liquid phase sintering (LPS) mechanism were discussed and the factors influencing the density of the prepared samples were analyzed. Microstructures of sintered samples were observed and the phase compositions were analyzed. The results showed that α-Si3N4 ceramics can be sintered by SPS based on the reaction among α-Si3N4 and sintering additives which lead to the liquid phase and the density can be well controlled from 2.48 to 3.09 g/cm3 while the content of the sintering aids changes from 10% to 28.5% and sintering temperature from 1400°C to 1500°C.

Liquid-phase assisted spark-plasma sintering of SiC nanoceramics and their nanocomposites with carbon nanotubes

2017 ◽  
Vol 37 (5) ◽  
pp. 1929-1936 ◽  
Author(s):  
Victor M. Candelario ◽  
Rodrigo Moreno ◽  
Zhijian Shen ◽  
Fernando Guiberteau ◽  
Angel L. Ortiz
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Spark Plasma Sintering ◽  
Plasma Sintering ◽  
Spark Plasma
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