Synthesis of MgAl₂O₄-SiC-C Refractory Powders by Using Forsterite, Alumina and Carbon Black

Abstract:

In this paper, the synthesis of MgAl₂O₄-SiC-C refractory composite powders by forsterite, alumina and carbon black was studied. The samples were calcined under reducing atmosphere and argon atmosphere at 1650 °C for 4 hrs respectively. The phase compositions and microstructure of the synthesized powders were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The result shows that adding excess carbon can enhance the formation of SiC. The argon atmosphere can promote the carbothermal reaction of forsterite and the growth of spinel crystal.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 838-841
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.838
• Online since: November 2011
• Authors: Hong Juan Duan, Hong Xi Zhu, Ping Liang, Wen Jie Yuan, Cheng Ji Deng
• Keywords: Forsterite, MgAl₂O₄-SiC-C, Synthesis

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