Influence of Nano-Y2O3 on Crystallization Behavior and Sintering Performance of Fused Quartz Ceramic Materials

Abstract:

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Fused quartz granule (d50=0.019 mm) was used as raw material, nano-Y2O3 (size<0.08 μm) was used as additive with dosages of 1% (in mass, similarly hereinafter), 2% and 3%. Fused quartz ceramic materials were fabricated in reduction atmosphere at 1300 °C, 1350 °C and 1400 °C for 1 h. Properties of samples were researched by measurements of apparent porosity, bending strength and thermal expansion rate, and analyzed by XRD and SEM. The results showed that additive nano-Y2O3 had good inhibiting effect on crystallization of fused quartz sintered at various temperatures, sample added 2% nano-Y2O3 had least thermal expansion rate, diffraction peak intensity and apparent porosity, and it had higher bending strength and more compact microstructure, especially sample sintered at 1350 °C. It can be deduced that 2% nano-Y2O3 plays the excellent role as the crystallization inhibitor and sintering assistant to fused quartz materials sintered at various temperatures.

Info:

Periodical:

Advanced Materials Research (Volumes 284-286)

Main Theme:

Edited by:

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

Pages:

1366-1369

DOI:

10.4028/www.scientific.net/AMR.284-286.1366

Citation:

Y. J. Chen et al., "Influence of Nano-Y2O3 on Crystallization Behavior and Sintering Performance of Fused Quartz Ceramic Materials", Advanced Materials Research, Vols. 284-286, pp. 1366-1369, 2011

Online since:

July 2011

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$35.00

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