Characterization and Mechanical Properties of TiN/O′-Sialon Ceramics Prepared from High Titania Slag

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TiN/O′-Sialon ceramics were prepared by pressureless sintering using high titania slag, silicon fume and bauxite chalmette as the starting materials. Phase compositions and microstructure were analyzed by XRD and SEM. The effect of TiO2 content in the staring materials on densification behavior and mechanical properties was studied. The results showed that the sintered samples consisted of O′-Sialon and TiN. O′-Sialon exhibited equiaxied morphology and the particle sizes were about 1-3μm. TiN showed fine granular morphology and most of the particle have lower size than 0.5μm. For the samples sintered at 1500°C using raw materials containing 30wt%TiO2, bulk density, hardness and flexure strength are 3.1g/cm3, 9.2GPa and 169MPa, respectively.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu

Pages:

1353-1357

DOI:

10.4028/www.scientific.net/AMR.284-286.1353

Citation:

T. Jiang et al., "Characterization and Mechanical Properties of TiN/O′-Sialon Ceramics Prepared from High Titania Slag", Advanced Materials Research, Vols. 284-286, pp. 1353-1357, 2011

Online since:

July 2011

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$35.00

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