The system PbO-B2O3-SiO2

CRYSTALLIZATION BEHAVIOUR OF GELS AND GEL-MONOLITHS IN THE Na2O-B2O3-SiO2 SYSTEM

BEHAVIOUR OF GERMANIUM IN PHASE SEPARABLE GLASSES OF THE SYSTEM Na2O - B2O3 - GeO2 - SiO2

The role of Ge02 in the Na20 B2O3 Ge02 Si02 quaternary system which presents a spinodal decomposition domain is studied. The physical properties of this system are compared to those of the system without Ge02. The leaching conditions of these glasses and the coordination of Ge are studied.

Relationship between Molten Oxide Structure and Thermal Conductivity in the CaO–SiO2–B2O3 System

Using a transient hot-wire method, the thermal conductivity of the CaO–SiO2–B2O3 mold flux system was measured. The effects of temperature, BO1.5 concentration and basicity on the thermal conductivity were considered, along with structural investigation by Raman spectroscopy. It was found that the addition of boron oxide caused both a decrement and increment of thermal conductivity, depending o...

Structural Investigation of Na2O–B2O3–SiO2 Glasses Doped with NdF3

Abstract—Sodium borosilicate glasses doped with different content of NdF3 mol % have been prepared by rapid quenching method. Ultrasonic velocities (both longitudinal and shear) measurements have been carried out at room temperature and at ultrasonic frequency of 4 MHz. Elastic moduli, Debye temperature, softening temperature and Poisson's ratio have been obtained as a function of NdF3 modifier...

the effect of bi2o3 addition on liquid-liquid phase separation, crystallization and dielectric properties of ferroelectric glass-ceramics in pbo-tio2-sio2-b2o3 system

in this study, an attempt has been made to study the effect of bi2o3 addition as nucleating agent on the liquid-liquid phase separation, crystallization and dielectric properties of samples prepared by sintering and crystallization of powdered glass in pbo-tio2-b2o3-sio2 glass-ceramic system using dta, xrd, sem and lcr techniques. the results showed that the addition of bi2o3 resulted in a quit...