Effect of Rare Earth Nano-Oxides on Sintering and Crystallization of Fused Quartz Ceramic Materials

Yue Jun Chen; Zhi Fa Wang; Jing Long Bu; Li Xue Yu; Rong Lin Wang; Rui Sheng Wang

doi:10.4028/www.scientific.net/AMR.295-297.1418

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 295-297Effect of Rare Earth Nano-Oxides on Sintering and...

Effect of Rare Earth Nano-Oxides on Sintering and Crystallization of Fused Quartz Ceramic Materials

Abstract:

Fused quartz powder (size<0.04mm) was used as raw material, nano-Y₂O₃, nano-CeO₂and nano-La₂O₃ (size<0.08μm) were dividedly used as additives with dosage of 2% each. Fused quartz ceramic materials were sintered in reduction atmosphere at 1300°C, 1350°C and 1400°C for 1h. The effect of rare earth nano-oxides on sintering and crystallization of the fused quartz ceramic were researched by measurements of apparent porosity, bending strength and thermal expansion rate, and analyses of XRD and SEM. The results showed that additives nano-Y₂O₃, nano-CeO₂and nano-La₂O₃ had obvious effect of inhibiting crystallization of fused quartz, and the samples added nano-Y₂O₃ and nano-La₂O₃ were better. Sample added nano-Y₂O₃ had least thermal expansion rate. Sample added nano-La₂O₃ had higher bending strength, and it showed that nano-La₂O₃ had better effect on sintering of fused quartz ceramic. It can be deduced that nano-La₂O₃ plays the excellent role as the crystallization inhibitor of fused quartz materials.

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Periodical:

Advanced Materials Research (Volumes 295-297)

Pages:

1418-1421

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.295-297.1418

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Online since:

July 2011

Authors:

Yue Jun Chen, Zhi Fa Wang, Jing Long Bu, Li Xue Yu, Rong Lin Wang, Rui Sheng Wang

Keywords:

Crystallization, Fused Quartz, Rare Earth Nano-Oxide, Sintering, Thermal Expansion

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