Journal
CERAMICS INTERNATIONAL
Volume 43, Issue 15, Pages 11830-11837Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2017.05.362
Keywords
Al2O3-SiC; Processing parameters; La2O3; Sm2O3; Carbothermal reduction; Coal ash
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Funding
- Open Research Fund for the State Key Laboratory of Refractories and Metallurgy (Wuhan University of Science and Technology) [G201705]
- Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education (Wuhan University of Science and Technology) [FMRU201401]
- Fundamental Research Funds for the Central Universities [N150204021]
- National Natural Science Foundation of China [51274059]
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Al2O3-SiC composite powders were successfully fabricated from coal ash by carbothermal reduction reaction (CRR) method in argon atmosphere. The effects of raw materials ratio, reaction temperature, La2O3 and Sm2O3 additions on the synthesis process were investigated in detail. Phase compositions and microstructures of Al2O3-SiC composite powders were characterized by XRD and SEM. Proper processing parameters and rare earths addition amounts were determined, and the formation process of Al2O3-SiC powders was also discussed.
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