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US 5,104,738 AGranted
Sealing glasses for titanium and titanium alloys
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsRichard K. Brow, Randall D. Watkins
Life of this patent
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Abstract
Glass compositions containing CaO, Al.sub.2 O.sub.3, B.sub.2 O.sub.3, SrO and BaO of various combinations of mole % are provided. These compositions are capable of forming stable glass-to-metal seals with titanium and titanium alloys, for use in components such as seals for battery headers.
Claims8
A glass-to-metal seal, consisting essentially of:
- (a) a metal selected from the group consisting of titanium or titanium alloys, in contact with
- (b) an alkali-free, silica-free glass consisting essentially of, in mole %;
- ______________________________________ CaO about 45-55 Al.sub.2 O.sub.3 about 10-20 B.sub.2 O.sub.3 about 25-35. ______________________________________
A glass-to-metal seal, consisting essentially of:
- (a) a metal selected from the group consisting essentially of, in mole %:
- ______________________________________ SrO about 40-50 Al.sub.2 O.sub.3 about 10-20 B.sub.2 O.sub.3 about 30-50. ______________________________________
A glass-to-metal seal, consisting essentially of:
- (a) a metal selected from the group consisting of titanium or titanium alloys, in contact with
- (b) an alkali-free, silica-free glass consisting essentially of, in mole %:
- ______________________________________ BaO about 30-60 Al.sub.2 O.sub.3 about 10-30 B.sub.2 O.sub.3 about 30-50. ______________________________________
A glass-to-metal seal, consisting essentially of:
- (a) a metal selected from the group consisting of titanium or titanium alloys, in contact with
- (b) an alkali-free, silica-free glass consisting essentially of, in mole %:
- ______________________________________ CaO about 20-40 BaO about 10-30 Al.sub.2 O.sub.3 about 5-15 B.sub.2 O.sub.3 about 30-50. ______________________________________
Dependencies are inferred from the claim text.