Ghosh, Chandrima and Sinhamahapatra, Somnath and Tripathi, Himansu Sekhar (2019) Effect of ZrO2 on the densification behavior and properties of Indian magnesite. International Journal of Applied Ceramic Technology, 16 (1). pp. 410-417. ISSN 1546-542X

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Natural magnesite is the primary source for magnesia-based refractory materials. India has vast deposits of magnesite in Salem and Almora regions. However, due to the presence of large amount of impurities which forms low-melting compounds at elevated temperature, its high-temperature application is restricted. Raw magnesite was evaluated in terms of chemical analysis, differential thermal analysis, thermogravimetric analysis, and phase assemblage. Zirconia (1-5 wt %) was added to Indian natural magnesite of Salem region to minimize the low-melting phase formation at high temperatures. Samples were sintered in the temperature range of 1550-1700 degrees C. Sintered samples were characterized in terms of densification, mechanical and thermo-mechanical properties, phase assemblage, and microstructure. It was found that the addition of zirconia reduced the formation of detrimental phases like monticellite and thereby improved the high-temperature mechanical properties.

Item Type: Article
Subjects: Refractories
Divisions: Refractory
Depositing User: Bidhan Chaudhuri
Date Deposited: 14 Nov 2019 09:35
Last Modified: 14 Nov 2019 09:35

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