Sintering of low-melting glass powders and glass-abrasive composites

Abstract

Sintering of glass powders in Na2O-B2O 3-SiO2 and PbO-ZnO-B2O3-SiO 2 systems as well as of their mixtures has been studied. The process of sintering is shown to change because of crystallization of the glass of the PbO-ZnO-B2O3-SiO2 system. Addition of diamond or cubic boron nitride to glass powders affects shrinkage in sintering composites. Sintering of powders of lead-containing glass proceeds by the mechanism of viscous flow.