Synthesis of Al₂O₃/AlB₁₂/Al Composite Ceramic Powders by High Frequency Induction Heating Method and a Study of Their Mechanical Properties

Abstract:

Pure Al2O3/AlB12/Al composite ceramic powders have been synthesized using high frequency induction heating method. This method starts from Al and B2O3 powder mixtures, after which Al2O3/AlB12/AlN composite ceramics were fabricated by hot-press sintering at 16000C for 2h under the protection of a N2 atmosphere. The bending strength and the fracture toughness of the ceramics were measured by the three-point bending method and the indentation fracture method, respectively. The results show that the pure Al2O3/AlB12/Al composite ceramic powders can be successfully synthesized by high frequency induction heating method. Al2O3 and AlB12 phases were formed by the liquid-liquid reaction mechanism and the liquid-solid reaction mechanism, respectively. The bending strength and the fracture toughness of the Al2O3/AlB12/AlN composite ceramics were 549.48MPa and 5.96MPa.m1/2, respectively. These values are 56.99% and 49% greater than those of the pure Al2O3 ceramic (350MPa and 4MPa.m1/2).

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 63-66
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.63
• Online since: October 2010
• Authors: Kai Jin Huang, Chao Dong Tan
• Keywords: Ceramic, High Frequency Induction Heating, Powder Technology, Sintering

References

[1] L.I. Osayande and I.O. Okenwa: Int. J. Appl. Ceram. Technol. Vol. 5 (2008) No. 3, pp.313-323.

[2] T. Matsunaga, U.L. Adisorn, Y. Kobayashi, S.M. Choi and H. Awaji: J. Ceram. Soc. Jpn. Vol. 113 (2005) No. 1, pp.123-125.

[3] C.H. Xu: J. Eur. Ceram. Soc. Vol. 25 (2005) No. 5, pp.605-611.

[4] S.E. Mohammad, F. Karimzadeh and M.H. Enayati: J. Alloy. Compd. Vol. 482 (2009) No. 1-2, pp.110-113.

[5] J.S. Li, J.J. Wang, B.S. Xu and Y.J. Yin: Key Eng. Mater. Vols. 368-372 (2007) Pt. 2, pp.1526-1528.

[6] L.L. Wang, Z.A. Munir and J.B. Holt: J. Mater. Synth. Process. Vol. 2 (1994) No. 4, pp.227-237.

[7] S. Yin, Y.H. Li and H.Y. Lai: Key Eng. Mater. Vol. 217 (2002), pp.9-12.

[8] A.G. Merzhanov: Combustion and Plasma Synthesis of High-Temperature Materials. Proc. Int. Symp. (San Francisco, USA, 23-26 Oct. 1988). 1988, pp.1-53.

[9] K.F. Cai, C.W. Nan and R.Z. Yuan: J. Chin. Ceram. Soc. Vol. 24 (1996) No. 2, pp.216-221. (in Chinese).

[10] C.S. Xie M.L. Hu,J.H. Hu and A.H. Wang: Trans. Mater. Heat Treat. Vol. 22(2001) No. 1, pp.20-24. (in Chinese).

[11] J.M. Mota, M.A. Martinez, F. Velasco and A.J. Criado: Ceram. Int. Vol. 30 (2004) No. 2, pp.301-306.

[12] A.J. Li, K.N. Sun, H.Y. Gong and Y.H. Fan: Rare Met. Mater. Eng. Vol. 36 (2007) Suppl. 1, pp.604-607. (in Chinese).