Theoretical Analysis on Thermal Shock Resistance of Refractories

Abstract:

So far, thermal shock theories have not been well verified in refractories. This paper compared hypothesis and failure mechanism of two typical thermal shock theories, analyzed the applications of two typical theories in refractories from working environment, failure process and microstructure differences. And thinks that the critical stress fracture theory is suitable for nearly ideal brittle refractory with ceramic bond and used in thermal shock extremely harsh environment; thermal shock damage theory suites to evaluate multiple loops thermal shock. Analyzed the factors influencing the thermal shock parameters, and discussed Ways to improve the thermal shock resistance of refractories from destructive force and resistive force of refractories. Conclusions are that choosing small swelling expansion rate and high thermal conductivity material, reducing the micro stress concentration and adding flexible phase, these three methods can be used to make refractories with good resistance to thermal shock.

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 145-150
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.145
• Online since: December 2014
• Authors: Tian Fei Ma*, Xin Fu Wang, Liang Zhao
• Keywords: Refractory, Theoretical Analysis, Thermal Shock Resistance

References

[1] N.M. Rendtorff, L.B. Garrido, E.F. Aglietti: Ceramics International Vol. 37(4) (2011), p.1430.

[2] Runsheng Yin, Dexian Zhu, Keming Gen: Refractories Vol. 43(1) (2009), p.74 (In Chinese).

[3] Bei Chen, Peidao Dong, Zehua Zhou: Refractories Vol. 35(6) (2001), p.325 (In Chinese).

[4] M.V. Swain: J Am Ceram Soc Vol. 73(3) (1990), p.626.

[5] Deyu Kong, Hui Yang, Guihua Chen: Journal of the Chinese ceramic society Vol. 30(Supplement) (2002), p.110 (In Chinese).

[6] Hongxia Li: Refractories Handbook, Beijing Metallurgical Industry Press (2007).

[7] Pengfei He, C. Yuan, R. Stern, W.J. Clegg: Journal of Materials Engineering Vol. (11) (2001), p.7 (In Chinese).

[8] Xiujuan Li, Jiamei He, Chun'e Hu: Refractories Vol. 36(6) (2002), p.338 (In Chinese).

[9] A. Phillipps, D. Simkin, M. Witt, in: Thermal Shock Resistance of Alumina-Graphite Refractories for the Continuous Casting of Steel, Unitecr'95 Congress. Proc. Unified Int. Tech. Conf. on Refractories. 4th Biennial Worldwide Conf. on Refractories. Global Development of Refractories, Vol. 2 (1995).

DOI: 10.1002/9781118837009.ch51

[10] Rong Sun, Qing Zhou, Zhong Wang, Sanfang Cao: Wisco Technology Vol. 41(2) (2003), p.25 (In Chinese).

[11] Xin Liu, Dianli Qu, Zhijian Li: Refractories Vol. 44 (Supplement) (2010), p.104 (In Chinese).

[12] Bo Liu, Yongfeng Liu, Kaiqi Liu: Refractories Vol. 44(2) (2010), p.124 (In Chinese).

[13] Jinping Li, Fu Yang, Xinglin Guo: Journal of the Chinese ceramic society Vol. 27(3) (1999), p.374 (In Chinese).

[14] Hongli Yang: Carbon techniques Vol. (6) (1998), p.3 (In Chinese).

[15] Zhiyuan Shang: Highway Vol. (6) (2008), p.102 (In Chinese).

[16] Benliang Tian: Carbon techniques Vol. (4) (1984), p.6 (In Chinese).

[17] Xuejun Su, Yuehui Liu, Kai Chen: Journal of Inorganic Materials Vol. 9(2) (1994), p.225 (In Chinese).

[18] Jianghong Gong: Fracture Mechanics of Ceramics, BeiJing: Tsinghua University Press, 2001, p.140 (In Chinese).