TY - JOUR TI - Composition-structure-property relationships in magnesium yttrium aluminoborate glasses DO - https://doi.org/doi:10.7282/t3-29ce-nr23 PY - 2019 AB - There is an increasing need for light-weight, strong and crack-resistant glasses for industrial applications. In order to design new glasses, a thorough understanding of relationships between composition, structure, and properties is required. This study attempts to shed more light on the composition-structure-property relationships in alumina-rich aluminoborate glasses. In the present work, MgO-Y2O3-Al2O3-B2O3 glasses have been fabricated by melt-quenching at temperatures ranging from 1600°C to 1650°C. The influence of the substitution of B2O3 by Al2O3 on the structure, thermal and mechanical properties of the glasses (hardness and crack resistance) have been investigated using magic angle spinning – nuclear magnetic resonance (MAS-NMR), differential scanning calorimetry (DSC) and Vickers indentation. Hardness and crack resistance of the glasses were found to correlate with their structure and composition. Furthermore, with Al2O3/B2O3 substitution, fragility, density and hardness were found to increase while glass forming ability as well as crack resistance decreased. KW - Materials Science and Engineering KW - Glass--Analysis KW - Aluminoborate glass LA - eng ER -