Preparation of In Situ Synthesized SiC Particles Reinforced Highly Porous Si3N4 Ceramics by Gel-Casting

Hong Zeng; Hong Jie Wang; Juan Li Yu; Dan Bo Lin; Guan Jun Qiao; Ji Qiang Gao

doi:10.4028/www.scientific.net/KEM.368-372.898

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Abrasive Erosion Comparison for a Ceramics and a High Chrome Cast Iron Applied in a Slurry Pump
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Preparation of In Situ Synthesized SiC Particles Reinforced Highly Porous Si₃N₄ Ceramics by Gel-Casting
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Surface Oxidation of Carbon Fiber and its Influence on the Properties of Carbon Fiber Reinforced BN-Si₃N₄ Composites
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Sintering Temperature Study of Hot-Pressed Y-SiAlON Ceramics
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HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372Preparation of In Situ Synthesized SiC Particles...

Preparation of In Situ Synthesized SiC Particles Reinforced Highly Porous Si₃N₄ Ceramics by Gel-Casting

Abstract:

In this paper, highly porous Si3N4 ceramics with high strength, homogeneous microstructure were fabricated by introducing a proper amount of nanometer carbon in the Si3N4 slurry by gel-casting. Scanning electron microscopy, X-ray diffraction, Archimedes water-displacement method and three-point bending tests were employed to analyze the microstructures and mechanical properties of the sintered bodies. It was shown by the XRD analysis that SiC particles were formed in the sintered bodies. The pillar β- Si3N4 morphology, homogeneous microstructure and the SiC particles as a reinforcement phase are the contributing factors for high porosity and good mechanical behavior.

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Key Engineering Materials (Volumes 368-372)

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898-900

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.368-372.898

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Online since:

February 2008

Authors:

Hong Zeng, Hong Jie Wang, Juan Li Yu, Dan Bo Lin, Guan Jun Qiao, Ji Qiang Gao

Keywords:

Gelcasting, Porous Ceramics, Silicon Carbide (SiC)

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