Alternative To Lead Crystal Glass: Study Of A Lead-Free Composition (In French)

New glasses based on the use of oxides of barium, strontium and zinc have been prepared using data from CD-ROM-Interglad to replace lead crystal. Physical and chemical studies have been undertaken by measuring viscosity, thermal expansion, density, refractive index and optical transmission. Results obtained from the experimental work were very close to those of lead crystal. Satisfactory coefficients of correlation were obtained by the modeling of physical parameters using multiple regression. They can be used to elaborate new compositions of glasses having equivalent physical and chemical properties as a lead crystal.