A Gas Pressure Sintering Furnace for Structural Ceramics

2001 ◽  
Author(s):  
I-Wei Chen
Keyword(s):  
Gas Pressure ◽  
Structural Ceramics ◽  
Gas Pressure Sintering

Development of α-β SiAlON Ceramics from Different Si3N4 Starting Powders

2008 ◽  
Vol 403 ◽  
pp. 107-108 ◽  
Author(s):  
Nurcan Calis Acikbas ◽  
Ferhat Kara ◽  
Hasan Mandal
Keyword(s):  
Fracture Toughness ◽  
Process Parameters ◽  
Gas Pressure ◽  
Economic Viability ◽  
Si3n4 Powder ◽  
Gas Pressure Sintering

- SiAlON ceramics were produced from different starting Si3N4 powders including β-Si3N4 and α-Si3N4 powders and mixtures of these powders. Gas pressure sintering was used for sintering. After sintering, resultant fracture toughness values were correlated with microstructure and starting powders. By optimizing chemistry and process parameters; - SiAlON ceramics with reasonable fracture toughness can be produced from rather coarse β-Si3N4 powder. This could improve the economic viability of SiAlON ceramics since -Si3N4 powders are less costly.

Luminescence properties of a green-emitting Eu2+-doped Sr-containing SiAlON phosphors by gas pressure sintering

2015 ◽  
Vol 26 (6) ◽  
pp. 3805-3812 ◽  
Author(s):  
Chunlei Zhao ◽  
Qian Ma ◽  
Ronghui Liu ◽  
Huibing Xu ◽  
Hongqi Ye ◽  
...  
Keyword(s):  
Gas Pressure ◽  
Luminescence Properties ◽  
Gas Pressure Sintering

Influence of powder characteristics on gas pressure sintering of Si3N4

1988 ◽  
Vol 23 (9) ◽  
pp. 3413-3419 ◽  
Author(s):  
M. Mitomo ◽  
N. Yang ◽  
Y. Kishi ◽  
Y. Bando
Keyword(s):  
Gas Pressure ◽  
Powder Characteristics ◽  
Gas Pressure Sintering

Thermal Conductivity of Si₃N₄ Ceramics Fabricated From Carbothermal-reduction-derived Powder

2021 ◽  
Author(s):  
Yuelong Wang ◽  
Xingyu Li ◽  
Haoyang Wu ◽  
Baorui Jia ◽  
Deyin Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Fracture Toughness ◽  
Grain Size ◽  
Flexural Strength ◽  
Grain Boundaries ◽  
Carbothermal Reduction ◽  
Secondary Phase ◽  
Gas Pressure ◽  
Gas Pressure Sintering

Abstract Si3N4-based ceramic (Si3N4-5wt%Y2O3-3wt%MgO) was obtained from carbothermal-reduction-derived powder combined with gas pressure sintering. The phase, microstructure, thermal conductivity and mechanical properties of Si3N4 ceramics were comprehensively analyzed. Dense Si3N4 ceramic with uniform grain size was obtained after sintering at 1900°C for 7 h under a N2 pressure of 1.2 MPa. The secondary phase consisted of Y4Si2O7N2 and Y2Si3O3N4 was found to gather around triangular grain boundaries. The thermal conductivity, flexural strength, hardness and fracture toughness of the Si3N4 ceramics were 95.7 W·m-1·k-1, 715 MPa, 17.2 GPa and 7.2 MPa·m1/2, respectively. The results were compared with product derived from commercial powder, the improvement of thermal conductivity (~8.3%) and fracture toughness (~4.3%) demonstrating the superiority of Si3N4 ceramics prepared from carbothermal-reduction-derived powder.

Effect of B4C Content on Densification Behavior of SiC-B4C Ceramics

2014 ◽  
Vol 997 ◽  
pp. 454-456
Author(s):  
Yun Long Zhang ◽  
Yu Min Zhang ◽  
Ming Hu ◽  
Xiao Gang Song
Keyword(s):  
Rare Earth ◽  
Rare Earth Oxide ◽  
Gas Pressure ◽  
Volume Shrinkage ◽  
Densification Behavior ◽  
Sintering Aids ◽  
Phase Constitution ◽  
Sintering Additives ◽  
Multi Phase ◽  
Gas Pressure Sintering

The SiC-B4C multi-phase ceramics was fabricated by gas-pressure sintering technology. The rare-earth oxide Al2O3combined with Er2O3/SiO2was served as sintering aids. The results were shown that the combination of Al2O3/Er2O3/SiO2sintering additives were effective for densification of SiC-B4C multi-phase ceramics. The influence of B4C content on the phase constitution, microstructure and densification behavior of the SiC-B4C multi-phase ceramics were detailed. The lose weight and volume shrinkage rate of SiC-B4C multi-phase ceramics had similar evolvement trend when B4C content increased. Keywords: Gas-Pressure Sintering, SiC-B4C multi-phase ceramics, densification behavior.

Hot Isostatic Pressing and Gas-Pressure Sintering

2014 ◽  
pp. 171-187
Author(s):  
Michael J. Hoffmann ◽  
Stefan Fünfschilling ◽  
Deniz Kahraman
Keyword(s):  
Hot Isostatic Pressing ◽  
Gas Pressure ◽  
Isostatic Pressing ◽  
Gas Pressure Sintering
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