Kundu, Madhurima and Dana, Kausik and Sinhamahapatra, Somnath (2025) Interaction of Hydrogen with Refractory Materials at High Temperatures. In: International Conference on Research Advancements and Industrial Challenges in Glass and Ceramics (RACGC 2025) , November 27-29, 2025, IIT Bombay, Mumbai . (Submitted)

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Abstract

The use of hydrogen for the reduction of iron ore has gained significant global attention in the steel industry, primarily due to its potential to drastically reduce CO₂ emissions associated with conventional reduction processes. Hydrogen gas serves as a carbon‑neutral alternative fuel and reducing agent. Gases can affect refractory materials through chemical reactions, thermal stress, and corrosion, making it crucial to understand these interactions. Identifying the interaction mechanisms of these materials with hydrogen is essential for improving the durability and performance of refractory linings in gaseous-rich, high-temperature environments. Limited studies in this area has been reported in the literature. Our study investigates the interaction of refractory materials such as alumina, stoichiometric spinel (Magnesia Aluminate Spinel), alumina-rich spinel, and mullite with hydrogen: argon mixtures. The effect of interaction of refractory with 5% H2 in Argon atmosphere over 8-hour period with controlled gas flow rates at different temperatures was studied with respect to apparent porosity, bulk density, mechanical properties (modulus of elasticity and modulus of rupture). Results showed that the MOE of stoichiometric spinel increased following treatment with nitrogen gas, while alumina exhibited no significant change. XRD analysis were conducted to confirm the formation of new phases resulting from gas interactions. Additionally, the microstructures were examined using SEM-EDX for elemental mapping to assess the extent and nature of gas-material interaction at the microscopic level.

Item Type:	Conference or Workshop Item (Poster)
Uncontrolled Keywords:	Thermal Stress, Refractory, Refractory oxide-gas interaction
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Ms Upasana Sahu
Date Deposited:	12 May 2026 17:02
Last Modified:	12 May 2026 17:02
URI:	https://cgcri.csircentral.net/id/eprint/5809

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