Yunsong Liu, Enhui Wang, Linchao Xu, Tao Yang, Zhijun He, Tongxiang Liang, and Xinmei Hou, Synthesis of CA6/AlON composite with enhanced slag resistance, Int. J. Miner. Metall. Mater., 30(2023), No. 4, pp.756-765. https://dx.doi.org/10.1007/s12613-022-2435-2
Cite this article as: Yunsong Liu, Enhui Wang, Linchao Xu, Tao Yang, Zhijun He, Tongxiang Liang, and Xinmei Hou, Synthesis of CA6/AlON composite with enhanced slag resistance, Int. J. Miner. Metall. Mater., 30(2023), No. 4, pp.756-765. https://dx.doi.org/10.1007/s12613-022-2435-2

Synthesis of CA6/AlON composite with enhanced slag resistance

  • Different amounts of AlON have been introduced in calcium hexaaluminate (CA6) using two approaches, that is, one-step and two-step methods, to improve the slag resistance of CA6. A one-step method can directly sinter the mixtures combining Al2O3, CaCO3, and Al in flowing nitrogen, in which AlON clusters are always formed because of the poor wettability of Al by Al2O3, leading to the high porosity of CA6/AlON composite. In a two-step method, CA6 and AlON are prepared separately and then mixed and sintered in flowing nitrogen. Compared with the sample prepared by the one-step method, CA6 and AlON in composite by the two-step method are more uniformly distributed, and the optimized amount of AlON added is 10wt%. The slag corrosion and penetration test shows that the CA6/AlON composite using the two-step method exhibits superior slag corrosion protection. The promoted effect of AlON on slag penetration and corrosion resistance is also discussed.
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