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.,(2022). https://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.,(2022). https://doi.org/10.1007/s12613-022-2435-2
Research Article

Synthesis of CA6/AlON composite with enhanced slag resistance

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  • Received: 20 October 2021Revised: 9 February 2022Accepted: 11 February 2022Available online: 12 February 2022
  • Aiming to improve the slag resistance of calcium hexaaluminate (CA6), different amounts of AlON has been introduced in CA6 materials using two approaches, i.e. one-step and two-steps methods. One-step method is a direct one to sinter the mixtures combining Al2O3, CaCO3 and Al in flowing nitrogen, in which AlON clusters are always formed owing to the bad wettability of Al by Al2O3, leading to rather high porosity of CA6/AlON composite. In two-steps method, CA6 and AlON are prepared separately, and then mixed and sintered in flowing nitrogen. Compared with the sample prepared by one-step method, both CA6 and AlON in composite by two-steps method are more uniformly distributed, and the optimized amount of AlON addition is determined to be 10 wt%. The slag corrosion and penetration test shows that CA6/AlON composite using two-steps method exhibit superior slag corrosion protection. Based on this, the promoted effects of AlON on the slag penetration and corrosion resistance are also discussed.

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