Abstract. xSb2O3-40TeO2-(60 − x)V2O5 glasses with 0 ≤ x ≤ 10 (in mol%) have been prepared by
rapid- melt quenching method. DSC curves of these ternary glasses have been investigated. The glass
transition properties that have been measured and reported in this paper, include the glass transition
temperature (T ), glass transition width (ΔT ), heat capacity change at glass transition (ΔC )and
fragility (F). Thermal stability, Poisson’s ratio, fragility and glass forming tendency of these glasses
have been estimated, to determine relationship between chemical composition and the thermal stability
or to interpret the structure of glass. In addition, Makishima and Makenzie’s theory was applied for
determination of Young’s modulus, bulk modulus and shear modulus, indicating a strong relation between
elastic properties and structure of glass. Generally, results of this work show that glass with x = 0 has the
highest shear, bulk and Young’s moduli which make it as suitable candidate for the manufacture of strong
glass fibers in technological applications; but it should be mentioned that glass with x = 8 has higher
handling temperature and super resistance against thermal attack.