Elastic Modulus and Fracture Toughness of Ternary PbO-ZnO-B2O3 Glasses

Abstract

The elastic moduli and fracture toughnesses of a series of PbO‐ZnO‐B2O3 glasses were measured for different PbO/ZnO ratios and for B2O3 contents from 30 to 70 mol%. Substituting ZnO for PbO increased both the elastic modulus and fracture toughness at all B2O3 levels with the fracture toughness being related to the elastic modulus. Structural effects on these properties are discussed.

Ultrasonic Investigation on Ferroelectric BaTiO3 Doped 80V2O5?20PbO Oxide Glasses

“…2b) analyses. Similarly, Poisson's ratio with a minimum and a maximum values parallel to the different structural character with addition of B 2 O 3 to PbO±ZnO±B 2 O 3 glasses has been observed [44]. The behavior of Poisson's ratio in the present glass system further supports the structural changes in the glass network.…”

Elastic properties and structural studies on some zinc-borate glasses derived from ultrasonic, FT-IR and X-ray techniques

“…On the other hand, the direct substitution of ZnO at the expense of all other oxides in the glass network will increase the ratio of oxygen to boron atoms (O/B) from 1.81 to 2.21 as shown in Table 2. In this case the ZnO mol% content will be added to the Na 2 O content to transform the BO 3 ]} until the ratio of borate anomaly which is equal to 0.5 and then the transformation of BO 4 again to BO 3 with NBOs. In fact, the results of oxygen molar volume obtained in Table 2 are in conflict with this assumption because its nearly constant trend with the increase of ZnO content from 0 to 35 mol% indicates that there is not much creation of NBOs [35].…”

“…Meanwhile, these glasses and their crystalline counterparts are considered to be good candidates for the optically induced elastoopticity [1]. According to previous studies, ZnO-B 2 O 3 glasses exhibit low melting point, so they are of special interest owing to their applications in different fields of electronic products [2,3]. This is due to the fact that the higher the polarizability of an ion, the lower the melting temperature of the substance.…”

Shielding behavior of V2O5 doped lead borate glasses towards gamma irradiation

“…Lead glasses are extensively used for various applications including crystal glass and optical glasses, low-melting solder glasses and glass-ceramics, numerous optical and electronic applications, radiation protection and in immobilization of hazardous radioactive wastes [1][2][3][4].…”