Kundu, Madhurima and Dana , Kausik and Sinhamahapatra, S. (2025) Impact of Gaseous Environment on the Properties of Refractory Materials. In: 29 th International Conference on Non-Ferrous Metals-2025 (ICNFM-2025), 11-12 July 2025, Hotel Taj Bengal, Kolkata. (Submitted)

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Abstract

Gaseous environment affects the performance of oxide-based refractories. The impact of gases is mainly focused on the stability of the refractory materials under different partial pressures of the constituent gases. Research has primarily focused on the corrosion resistance of silica-aluminium containing refractories. As a result, there is an increasing concern about the interaction of refractories with the gases. Gases can affect refractory materials through chemical reactions, thermal stress, and corrosion, making it crucial to understand these interactions. Identifying corrosion mechanisms is essential for improving the durability and performance of refractory linings in gaseous-rich, high-temperature environments. Although significant progress has been made, ongoing research continues to explore the gaseous interaction with the refractory materials to achieve optimal solutions for the industry. Our study investigates refractory materials such as alumina, magnesia, stoichiometric spinel, alumina-rich spinel, and mullite in nitrogen and hydrogen atmospheres over a 24-h period with controlled gas flow rates. After firing, the refractory bar samples were characterized in terms of apparent porosity and bulk density. Thermomechanical properties, including the modulus of elasticity and modulus of rupture, were measured both before and after exposure to the gas atmosphere to assess the change in properties in the refractory materials. XRD analysis was performed to confirm the presence of spinel and mullite phases before the interaction with gases.

Item Type:	Conference or Workshop Item (Poster)
Uncontrolled Keywords:	Thermomechanical, Thermal Stress, Refractory, Refractory oxide-gas interaction
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Ms Upasana Sahu
Date Deposited:	01 Sep 2025 11:30
Last Modified:	01 Sep 2025 11:30
URI:	http://cgcri.csircentral.net/id/eprint/5758

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