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OwnerMasahiro Yoshida, Yasuo Hatate +5inventors
InventorsMasahiro Yoshida, Yasuo Hatate, Tsugumitsu Sarata, Yoshimitsu Uemura, Tomoyuki Honda, Hiroyuki Fukunaga, Masahiro Iwashita
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Provided with a glass composition including a network-former oxide composed of any one of or both of B2O3 and V2O5 of 20-80% by weight, ZnO of 0-60% by weight and BaO of 0-80% by weight, wherein at least one of ZnO and BaO is included as an essential ingredient. The present invention is a glass material for use in sealing, which is of lead-free series, can be used for sealing at a low processing temperature and within a wide temperature range, has a low thermal expansion coefficient, superior adhesion, superior sealing processability, superior adherence, superior chemical stability, superior strength and the like and comprises sufficient practical performance to substitute for lead glass.
1-13. (canceled)
A sealing method, wherein a sealed portion of an article to be sealed is coated with a lead-free glass material for use in sealing composed of mixed powder paste, said mixed powder paste including a refractory filler added to a glass powder, said glass powder having a glass composition including a network-former oxide composed of any one of or both of B2O3 and V2O5 of 20-80% by weight, ZnO of 0-60% by weight and BaO of 0-80% by weight, wherein at least one of ZnO and BaO is included as an essential ingredient, tentative burning is performed for the article at around a softening point of a lead-free glass included in the paste and then main burning is performed at around a crystallization starting temperature of the lead-free glass.
Dependencies are inferred from the claim text.