GLASS COMPOSITIONS FOR SEALING

摘要

The glass composition comprises solid lead oxide - zinc oxide - boron oxide(PbO-ZnO-B2O3) glass and natural garnet as a filler component. This composition has the advantage that thermal strain does not occur at the interface between the crystalline glass and filler because of the excellent chemical affinity. This prevents cracks from propagating at the interface between the main glass and the filler, thereby improving mechanical strength of glass.