Synthesis of AlN-SiC Ceramics by Hot Pressing

Li Juan Zhou; Yun Xia Zhao; Fan Tao Meng

doi:10.4028/www.scientific.net/KEM.575-576.166

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 575-576Synthesis of AlN-SiC Ceramics by Hot Pressing

Synthesis of AlN-SiC Ceramics by Hot Pressing

Abstract:

AlN-SiC ceramics were prepared at 1950°C by hot pressing (HP) of AlN/SiC powders in stoichiometric proportion. The sintered product was characterized using X-ray diffraction (XRD). Scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS) were utilized to investigate the morphology characteristics. The results show that AlN-SiC phase is well-developed with a close and lamellar structure. The grains are plate-like with the size of 1-3μm, the thickness of 3-5μm and elongated dimension. The results showed that the products had the density of 99 percent of the theoretical, bending strength of 550-800 MPa and fracture toughness of 5-6 MPa·m^1/2. The distribution of AlN-SiC grains is relatively uniform.

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Key Engineering Materials (Volumes 575-576)

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166-169

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https://doi.org/10.4028/www.scientific.net/KEM.575-576.166

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Online since:

September 2013

Authors:

Li Juan Zhou, Yun Xia Zhao, Fan Tao Meng

Keywords:

AlN-SiC, Hot Pressing, Microstructure, Sintering, Solid Solution

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