Thermal and Mechanical Studies of Cerium Molybdenum Borosilicate Glasses and Glass–Ceramics

Abstract

This investigation will focus on a particular molybdenum borosilicate glass with the form 61B2O3 – 19SiO2- (20-x) MoO3—x CeO2, x = (0 ? x ? 12 mol. %). DTA examination was conducted using a Shimadzu -DTA equipment. The powder glass samples (10 mg) were placed in a platinum pan and heated to 800 °C in nitrogen medium at various rates. The temperatures of the glass transition, Tg, the crystallization extrapolated onset, Tc, the crystallization peak, TP, and melting Tm, were determined. The quantity of CeO2 in the checked glass had a significant impact on its crystallization behavior, with an increase in CeO2 content increasing ?T and thus making the glasses more stable. With increasing CeO2 concentrations, both EG & Ec values decrease, as expected given the rise in Tg & TP values. XRD and SEM were used to identify the crystallizing phases and microstructural morphology for each composition. Based on XRD observations, Molybdenum Silicide (Mo3Si2), Molybdenum Boride (B2Mo1), Cerium Borate (B1Ce1O3), Cerium Molybdenum Oxide (Ce16Mo21O56) and Cerium Silicide Oxide (Ce10O3Si8) phases were detected. The presence of particles with different shapes in both compositions was revealed by SEM micrographs. As CeO2 concentrations increased, the ultrasonic velocities & elastic moduli increased. © 2023, The Author(s), under exclusive licence to Springer Nature B.V.