Effect of Temperature on the Phase Behaviors of Zircon by Carbothermal Reduction-Nitridation

Abstract:

Phase behaviors of zircon at different temperatures via carbothermal reduction-nitridation were investigated in this study. By using zircon as raw material, with carbon coke as reducing agent, the influence of reaction temperatures (1450, 1500, 1550 and 1600 °C, respectively) on phase behaviors and microstructure of the products was characterized by X-ray diffraction analysis (XRD), scanning electronic microscopy (SEM) and energy dispersive spectroscopy (EDS). The results shows that by carbothermal reduction-nitridation, the main phases in the final products of zircon are m-ZrO₂, c-ZrO₂, β-SiC, ZrN and β-Si₃N₄ at different temperatures for 4 hours.

• Periodical: Key Engineering Materials (Volume 492)
• Pages: 480-483
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.492.480
• Online since: September 2011
• Authors: Li Yin, Zhao Hui Huang, You Guo Xu, Yue Tong Li, Yang Gai Liu, Ming Hao Fang
• Keywords: Carbothermal Reduction-Nitridation, Phase Behaviour, Zircon

References

[1] B.Y. Ma and J.K. Yu: Trans. Nonferrous Met. Soc. China. Vol. 19(2009), p.1222.

[2] J.Y. Li, Y. Sun, Y. Tan, et al.: Chem. Eng. J. Vol. 144 (2008), p.149.

[3] X.J. Zhao, D.L. Chen, H.Q. Ru, et al.: J. Eur. Ceram. Soc. Vol. 31(2011), p.883.

[4] M. Hamidouche, N. Bouaouadja, R. Torrecillas, et al.: Ceram. Int. Vol. 33(2007), p.655.

[5] R. Gouttebaron, G. Terwagne, M. Hecq, et al.: Surf. Coat. Technol. Vol. 174-175(2003), p.240.

[6] Y. Sun, B. Yao, Q. He, et al.: J. Alloys Compd. Vol. 479(2009), p.599.

[7] P.K. Panda, L. Mariappan and T.S. Kannan: Ceram. Int. Vol. 26(2000), p.455.

[8] T. Jiang, X.X. Xue, P.N. Duan, et al.: Ceram. Int. Vol. 34(2008), p.1643.

[9] H. Arik: J. Eur. Ceram. Soc. Vol. 23(2003), p. (2005).