Ye ZHANG, Yuping ZENG. Progress of Porous Silicon Nitride Ceramics Prepared via Self-propagating High Temperature Synthesis [J]. Journal of Inorganic Materials, 2022, 37(8): 853
- Journal of Inorganic Materials
- Vol. 37, Issue 8, 853 (2022)
![Optical picture (a) and amplified microstructures (b-d) of the porous Si3N4 ceramics prepared by gel-casting and SHS[32]](/richHtml/jim/2022/37/8/853/img_1.png)
1. Optical picture (a) and amplified microstructures (b-d) of the porous Si3N4 ceramics prepared by gel-casting and SHS[32]
![Schematic illustration of the fabrication of porous Si3N4 ceramics by SHS[47]](/richHtml/jim/2022/37/8/853/img_2.png)
2. Schematic illustration of the fabrication of porous Si3N4 ceramics by SHS[47]
![Microstructures of the porous Si3N4 ceramics fabricated by different (p) pressures of N2 gas (p) and average particle sizes of Si powder (d50)[46]](/Images/icon/loading.gif){kind=icon}
3. Microstructures of the porous Si3N4 ceramics fabricated by different (p ) pressures of N2 gas (p ) and average particle sizes of Si powder (d 50)[46]
4. Schematic of the formation mechanism of porous Si3N4 starting from Si with different particle sizes[46]
5. Microstructures of different areas of the SHS-fabricated Si3N4 ceramics[59]
6. Weibull plots of flexural strength for samples prepared with different types of Si3N4 diluent and shaping pressures[59]
7. Relationship between flexural strength and porosity of ceramics prepared by different methods
8. Room-temperature and high-temperature flexural strength of the fabricated porous Si3N4 ceramics with different sintering additives[56]
9. Stress-strain curves of the obtained porous Si3N4 ceramics during fracture at 1400 ℃[56]
10. Microstructures and average grain sizes of the SHS-fabricated Si3N4 ceramics prepared with different Y2O3 mass content as sintering additive[62]
11. Room-temperature and high-temperature flexural strength of the fabricated porous Si3N4 ceramics as function of sintering additives addition[62]
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Table 1. Composition of raw materials, parameters of SHS process and properties of the fabricated samples
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Table 2. Correlation coefficient and Weibull modulus of samples obtained with two different Si3N4 powders and varied shaping pressures[59]
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