Emphasis of some physical and dynamical properties of inverted barium phosphate base glass
Ahmed H. Hammad, Essam B. Moustafa, Ahmed R. Wassel
Abstract
Melt-annealed zinc barium phosphate invert glass was produced. A mixture of borate (B2O3), cadmium oxide (CdO), and lead oxide (PbO) was added to the synthesized glass. B2O3 in the base glass formed P–O–B linkages with BO3 and BO4 structural units, with CdO acting as a modifier. PbO4 structural units were observed next to PO4 network formers. Glass density (ρ) is affected by doping type and ratio. It was 3.43 g/cm3 for PbO glass and 3.31 g/cm3 for B2O3 glass. The optical properties of the examined glass were measured and discussed in relation to the structural modification of the host glass. The glass sample containing PbO had a high value of Eg at 4.23 eV, but the glass doped with CdO + PbO had a low value at 3.81 eV, depending on the role of the additive in the glass structure. PbO-containing glass had a high damping ratio (7.308%), second only to CdO-containing glass at 8.069%. However, the dynamic Young's modulus of PbO-containing glass was reduced by 25% compared to the base invert glass.