Role of Sm2O3 on surface to bulk crystallization and thermal properties of Fe2O3-V2O5-B2O3-SiO2 glasses
Source abstract
Abstract
Non-isothermal crystallization kinetics of SiO 2-B 2O 3-V 2O 5-Fe 2O 3-Sm 2O 3 glass and glass-ceramics are investigated using experimental and theoretical approaches. In order to gain insight into the thermal behaviour of the glasses, Sm 2O 3 is systematically replaced with Fe 2O 3 in the glass composition. Differential thermal analysis (DTA) curves of glass and glass-ceramics are obtained at various heating rates. The DTA-derived characteristic temperatures are used as inputs for different theoretical models. Sm 2O 3 addition in place of Fe 2O 3 increases the tendency of surface to bulk crystallization with glass formation tendency in the present samples. The highest activation energy of crystallization is observed for the 40SiO 2-40B 2O 3-10V 2O 5-10Fe 2O 3 (SM-0) sample. The activation energy is observed in the range of 220-425 kJ/mol. It is comparable to other glasses.
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Research context
OpenAlex topics: Glass properties and applications · Thermal and Kinetic Analysis · Catalysis and Oxidation Reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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