Effect of Gd₂O₃-Nd₂O₃ Compound Additive on Crystallization and Sintering of Fused Quartz Ceramic Materials

Abstract:

Fused quartz granules (d₅₀=19 μm) were used as raw material, and Gd₂O₃-Nd₂O₃ (1:1, in mass) 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. The apparent porosity, bending strength and thermal expansion ratios of the samples were examined and the samples were further analysed by means of XRD and SEM. The results showed that the sample sintered at each temperature with 3% Gd₂O₃-Nd₂O₃ had the lowest apparent porosity, the highest bending strength and more compact microstructure. This indicated that 3% Gd₂O₃-Nd₂O₃ was helpful to sintering of fused quartz ceramic materials. The results of XRD and thermal expansion ratio analysis showed that 3% Gd₂O₃-Nd₂O₃ compound additive had better effect on inhibiting crystallization of the samples sintered at 1300 °C and 1350 °C, but had a little effect on inhibiting crystallization of the sample sintered at 1400 °C.

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 665-668
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.665
• Online since: September 2011
• Authors: Heng Yong Wei, Shu Long Liu, Jing Long Bu, Shu Bin Shen, Li Xue Yu, Zhi Fa Wang
• Keywords: Crystallization, Fused Quartz, Gadolinium Oxide, Neodymium Oxide, Sintering

References

[1] X.D. Yuan, W.L. Cui and W.H. Liu: Glass. Vol. 26 (1999), pp.44-46. (In Chinese)

[2] J.S. Xing, S.B. Wang and Y. Zhang: Acta Materiae Compositae Sinica. Vol. 23(2006), pp.75-79. (In Chinese)

[3] C.F. Liu, D.C. Jia and Y. Zhou: Rare Metal Materials and Engineering. Vol. 34 (2005), pp.613-616. (In Chinese)

[4] G.W. Wen, T.Q. Lei and Y. Zhou: Materials Science and Technology. Vol. 9 (2001), pp.1-5. (In Chinese)

[5] Y.S. Li, Z.Q. Han and N. Li: Naihuo Cailiao. Vol. 38 (2004), pp.334-335. (In Chinese)

[6] J.B. Wang, K. Li, S.J. Huang, et al: Bulletin of the Chinese Ceramic Society. Vol. 28 (2009), pp.1107-1111. (In Chinese)

[7] J.J. Yao, B.S. Li and X.X. Huang: Journal of Inorganic Materials. Vol. 12 (1997), pp.47-53. (In Chinese)

[8] F. Ma, Z.F. Wang, J.L. Bu, et al: Advanced Materials Research, Vol. 97-101 (2010), pp.880-883.

[9] Y.W. He, Z.F. Wang, F. Ma, et al: Advanced Materials Research, Vol. 150-151 (2011), pp.1786-1789.

[10] J.L. Bu, F. Ma, Y.H. Zhang, et al: Advanced Materials Research, Vol. 150-151 (2011), pp.1782-1785.