Fusion sealing materials and use in CRT
AssigneeCorning Incorporated
InventorRobert Morena
Life of this patent
Estimating the term…
Abstract
A fusion seal between two surfaces, and a material to produce the seal, consisting essentially of 60-85 percent by weight of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and 15-40 percent by weight of a mill addition including an additive selected from the group consisting of 15-40% zircon and 15-40% of an alumina-zircon mixture in which the alumina content is less than 10%, the additive amounts being based on the sealing material total, the mill addition being present in sufficient amount to provide a set point of at least 300.degree. C. The effect of the mill addition in a fusion seal finds particular application in uniting the faceplate and funnel members to form a cathode ray tube envelope.
Claims17
A fusion sealing material consisting essentially of 60-85% by weight of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and 15-40 percent by weight of an alumina-zircon mixture as a mill addition in which the alumina content is less than 10%, the additive amounts being based on the sealing material total, the additive being present in sufficient amount to provide a sealing material having a set point of at least 300.degree. C.
A fusion seal between the surfaces of two bodies, the fusion seal consisting essentially of 60-85% by weight of a SnO--ZnO--P.sub.2 O.sub.5 glass frit and 15-40 percent by weight of an alumina-zircon mixture as a mill addition in which the alumina content is less than 10%, the additive amounts being based on the fusion seal total, the additive being present in sufficient amount to provide a sealing material having a set point of at least 300.degree. C.
Dependencies are inferred from the claim text.