Fabrication, Microstructure and Properties of Nitrides Bonded Alumina Castables by In Situ Nitridation Reaction

Abstract:

Nitrides(Si₃N₄/Sialon) bonded alumina castables were fabricated by in situ nitridation reaction. Effects of the formation of nitrides on the physical properties, hot strength and thermal shock resistance were investigated. The results show that the phase composition of castables is alumina, a-Si₃N₄, b-Si₃N₄ and Si₂N₂O after fired at 1400^ºC and 1450^ºC, and is alumina, b-Sialon and O’-Sialon after fired at 1500^ºC. Hot modulus of rupture and thermal shock resistance of specimens are noticeably improved due to the formation of nitrides.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 69-72
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.69
• Online since: July 2011
• Authors: Quan Li Jia, Fang Bao Ye, Yu Cui Zhang
• Keywords: Alumina Castables, In Situ Nitridation Reaction, Nitrides, Thermal Shock Resistance

References

[1] A. A. Amadeha, J. C. Labbe and P. E. Quintard: J Euro Ceram Soc. Vol. 25 (2005), p.1041

[2] H. J. Zhang, B. Han and Z. J. Liu: Mater Res Bull. Vol. 41 (2006), p.1681

[3] Z. H. Huang, J. L. Sun, J. X. Wang, et al: Key Eng Mater, Vol. 224-226(2002), p.275

[4] X. C. Zhong: Interceramic. Vol. 44 (1995), p.3

[5] Q. L. Jia, F. B. Ye and X. C. Zhong: Refractories. Vol. 39(2005), p.41 (In Chinese).

[6] X. H. Liu, F. B. Ye and X. C. Zhong: Refractories. Vol. 38(2004), p.151 (In Chinese).

[7] F. L. Riley: J Am Ceram Soc. Vol. 83(2000), p.245

[8] R. G. Pigeon, A. Varma and A. E. Miller: J Mater Sci. Vol. 28 (1993), p. (1919)

[9] P. Peterson, Z. J. Shen, M. Johnsson, et al: J Euro Ceram Soc. Vol. 22 (2002), p.1357

[10] X. C. Zhong: China's Refractories. Vol. 11(2002), p.3