Abstract
The oxidation behavior of different SiAlON phases (β-SiAlON, X-phase SiAlON and 12H powders) synthesized from coal gangue in air atmosphere was investigated using isothermal thermogravimetry (TG) and field-emission scanning electron microscopy (FE-SEM). The effect of ferric oxide impurities in coal gangue was studied. The results show that ferric oxide contributes to the growth of SiAlON crystalline during the synthesis process. In the oxidation experiment, the existence of ferric oxide decreases the oxidation resistance of SiAlON. The reason is that the impurity causes the formation of a liquid phase at a higher temperature. At 1423–1623 K, the oxidation of SiAlON powders is diffusion controlled and it can be described by Chou’s model. A fair agreement is found between theoretical calculations and the experimental data.
Similar content being viewed by others
References
Y. Oyama and K. Kamigaito, Solid solubility of some oxides in Si3N4, Jpn. J. Appl. Phys., 10(1971), p.1637.
K.H. Jack, Solid solubility of alumina in silicon nitride, Trans. J. Br. Ceram. Soc., 72(1973), p.376.
K.H. Jack and W.I. Wilson, Ceramics based on the Si-Al-O-N and related systems, Nat. Phys. Sci., 238(1972), p.28.
A.D. Mazzoni and E.F. Aglietti, Mechanism of the carbonitriding reactions of SiO2-Al2O3 minerals in the Si-Al-O-N system, Appl. Clay Sci., 12(1998), p.447.
F.J. Li, T. Wakihara, J. Tatami, et al., Elucidation of the formation mechanism of β-SiAlON from a zeolite, J. Am. Ceram. Soc., 90(2007), p.1541.
J. Wang, N. Li, C.C Shi, et al., β-SiAlON produced by carbon thermal nitriding reaction of bauxite, J. Univ. Sci. Technol. Beijing, 7(2000), No.3, p.209.
X.D. Wang, H. Bao, and W.C. Li, Oxidation of O′-SiAlON-ZrO2 composite ceramics, J. Univ. Sci. Technol. Beijing, 8(2001), No.1, p.43.
L.O. Nordberg, M. Nygren, P.O. Käll, et al., Stability and oxidation properties of RE-α-Sialon ceramics (RE=Y, Nd, Sm,Yb), J. Am. Ceram. Soc., 81(1998), p.1461.
R. Ramesh, P. Byrne, S. Hampshire, et al., Kinetics of weight changes and morphological developments during oxidation of pressureless sintered β-SIALONS, J. Eur. Ceram. Soc., 17(1997), p.1901.
M.H. Lewis and P. Barnard, Oxidation mechanisms in Si-Al-O-N ceramics, J. Mater. Sci., 15(1980), p.443.
R. Ramesh, P. Byrne, and M.J. Pomeroy, Oxidation studies of a high Al substituted β-Sialon, J. Mater. Process. Technol., 56(1996), p.600.
K.J.D. MacKenzie, S.S. Shimada, and T. Aoki, Thermal oxidation of carbothermal β′-sialon powder: Reaction sequence and kinetics, J. Mater. Chem., 7(1997), p.527.
K.J.D. MacKenzie, C.M. Sheppard, and G.C. Barris, et al., Kinetics and mechanism of thermal oxidation of sialon ceramic powders, Thermochim. Acta, 318(1998), p.91.
K.C. Chou, A kinetics model for oxidation of Si-Al-O-N materials, J. Am. Ceram. Soc., 89(2006), p.1568.
K.C. Chou and X.M. Hou, Kinetics of high temperature oxidation of inorganic non-metallic materials, J. Am. Ceram. Soc., 92(2009), p.585.
X.M. Hou, K.C. Chou, X.J. Hu, et al., A new measurement and treatment for kinetics of isothermal oxidation of Si3N4, J. Alloys. Compd., 459(2008), p.123.
X.M. Hou, K.C. Chou, X.C. Zhong, and S. Seetharaman, Oxidation kinetics of aluminum nitride at different oxidizing atmosphere, J. Alloys Compd., 465(2008), p.90.
X.M. Hou, G.H. Zhang, and K.C. Chou, A comparison of oxidation kinetics of O′-SiAlON and β-SiAlON powders synthesized from bauxite, Int. J. Appl. Ceram. Technol., 5(2008), p.529.
T.Z. Ge, Y.H. Liang, and X.C. Zhong, Preparation, property and microstructure of bauxite-based fused corundum-zirconia and mullite-zirconia materials, Refractories, 39(2005), p.101.
S.P. Li, Effect of Impurities of Fe 2 O 3 and TiO 2 on SiAlON Synthesis from Bauxite [Dissertation], Zhengzhou University, Zhengzhou, 2004, p.53.
W. Jander, Reactions in solid states at room temperature I: Announcement the rate of reaction in endothermic conversions, Z. Anorg. U. Allgem. Chem., 163(1927), p.1.
X.M. Hou and K.C. Chou, Comparison of the diffusion control models for isothermal oxidation of SiAlON powders, J. Am. Ceram. Soc., 91(2008), p.3315.
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was financially supported by the National Natural Science Foundation of China (No.50874013).
Rights and permissions
About this article
Cite this article
Hou, Xm., Yue, Cs., Zhang, M. et al. Thermal oxidation of SiAlON powders synthesized from coal gangue. Int J Miner Metall Mater 18, 77–82 (2011). https://doi.org/10.1007/s12613-011-0403-3
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12613-011-0403-3