China's Refractories


China's Refractories ›› 2024, Vol. 33 ›› Issue (1): 14-17.DOI: 10.19691/j.cnki.1004-4493.2024.01.003

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Microwave-assisted Synthesis of Al4SiC4 and Its Effect on Properties of MgO-C Refractories

WANG Li*, LIU Shijie, WEI Haoyu, GUO Yanyan, GENG Shangrui, YAN Miaoxin, QIN Feng, GUO Yusen, Ma Juanjuan, DONG Binbin   

  1. Henan Key Laboratory of Green Building Materials Manufacturing and Intelligent Equipemnt, Luoyang Institute of Science and Technology, Luoyang 471023, China
  • Online:2024-03-15 Published:2024-04-07
  • Contact: *e-mail:
  • About author:Wang Li, born in 1968, received his doctor's degree in materials science from Xi'an University of Architecture and Technology in 2013. He serves as a member of Refractories Committee of The Chinese Society for Metals, a member of SAC/TC193 Technical Committee on Refractory of Standardization Administration of China, and a member of Luoyang Green Building Materials Expert Committee. He has presided over and participated in a number of provincial and ministerial level projects. He has published more than 50 papers in China and overseas scientific journals, among which more than 20 papers have been indexed by EI or SCI. He has applied for more than 30 patents and obtained 13 authorized invention patents. He mainly engages in the development and utilization of high-temperature ceramics and industrial solid wastes.

Abstract: Al4SiC4 was synthesized from Al powder, silicon carbide, and graphite by microwave sintering, and characterized by XRD and SEM. Then the synthesized material was added to the magnesia carbon refractory brick to study its effect on the oxidation resistance, apparent porosity, bulk density, elastic modulus, and modulus of rupture. It is found that Al4SiC4 can be synthesized by microwave sintering at 1 300 ℃ and the addition of Al4SiC4-containing material as an antioxidant can enhance the oxidation resistance of the magnesia carbon refractory brick.

Key words: microwave-assisted synthesis, Al4SiC4, MgO-C refractories, oxidation resistance