| 摘要 |
A fusion seal between two surfaces, and a material to produce the seal, consisting essentially of 60 and 15-40 percent by weight of a mill addition including an additive selected from the group consisting of 15-40 percent zircon and 15-40 percent of an alumina-zircon mixture in which the alumina content is less than 10 percent, 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.
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