Fabrication and mechanical properties of Sialon-Si2N2O nanocomposite

Junting Luo; Qing Zhang; Kaifeng Zhang

doi:10.1117/12.780084

1 November 2007 Fabrication and mechanical properties of Sialon-Si₂N₂O nanocomposite

Junting Luo, Qing Zhang, Kaifeng Zhang

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64234W (2007) https://doi.org/10.1117/12.780084
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Nano-structured Si₂N₂O-Sialon composites were prepared by liquid phase sintering method with the amorphous nano-sized Si₃N₄ and nano-sized AlN powders. Nano-sized Al₂O₃ and Y₂O₃ powders synthesized by polyacrylamide gel method were introduced as additives. High relative density 98.6% was observed at low sintering temperature of 1600 °C. XRD analysis indicates that the sintered body consisted of Sialon and Si₂N₂O crystalline phases. SEM and TEM examination confirmed the grain size of sintered body was less than 80nm. The high hardness 22.5GPa and high flexural strength 895MPa were obtained.

Citation Download Citation

Junting Luo, Qing Zhang, and Kaifeng Zhang "Fabrication and mechanical properties of Sialon-Si₂N₂O nanocomposite", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64234W (1 November 2007); https://doi.org/10.1117/12.780084

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