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Title: Sealing glasses for titanium and titanium alloys

Abstract

Barium lanthanoborate sealing-glass compositions are provided comprising various combinations (in terms of mole-%) of boron oxide (B.sub.2 O.sub.3), barium oxide (BaO), lanthanum oxide (La.sub.2 O.sub.3), and at least one other oxide selected from the group consisting of aluminum oxide (Al.sub.2 O.sub.3), calcium oxide (CaO), lithium oxide (Li.sub.2 O), sodium oxide (Na.sub.2 O), silicon dioxide (SiO.sub.2), or titanium dioxide (TiO.sub.2). These sealing-glass compositions are useful for forming hermetic glass-to-metal seals with titanium and titanium alloys having an improved aqueous durability and favorable sealing characteristics. Examples of the sealing-glass compositions are provided having coefficients of thermal expansion about that of titanium or titanium alloys, and with sealing temperatures less than about 900.degree. C., and generally about 700.degree.-800.degree. C. The barium lanthanoborate sealing-glass compositions are useful for components and devices requiring prolonged exposure to moisture or water, and for implanted biomedical devices (e.g. batteries, pacemakers, defibrillators, pumps).

Inventors:
 [1];  [1];  [1];  [2]
+ Show Inventor Affiliations
  1. Albuquerque, NM
  2. Rolla, MO
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
871050
Patent Number(s):
5648302
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61N - ELECTROTHERAPY
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
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DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
sealing; glasses; titanium; alloys; barium; lanthanoborate; sealing-glass; compositions; provided; comprising; various; combinations; terms; mole-; boron; oxide; bao; lanthanum; selected; consisting; aluminum; calcium; cao; lithium; sodium; na; silicon; dioxide; sio; useful; forming; hermetic; glass-to-metal; seals; improved; aqueous; durability; favorable; characteristics; examples; coefficients; thermal; expansion; temperatures; 900; degree; 700; -800; components; devices; requiring; prolonged; exposure; moisture; water; implanted; biomedical; batteries; pacemakers; defibrillators; pumps; sealing-glass compositions; glass-to-metal seals; sealing glasses; lithium oxide; titanium alloy; glass compositions; boron oxide; calcium oxide; aluminum oxide; thermal expansion; provided comprising; glass composition; titanium dioxide; silicon dioxide; sodium oxide; titanium alloys; various combinations; medical device; oxide selected; metal seal; medical devices; sealing glass; forming hermetic; lanthanum oxide; lanthanoborate sealing-glass; glass-to-metal seal; hermetic glass; metal seals; barium oxide; /501/428/

Citation Formats

Brow, Richard K, McCollister, Howard L, Phifer, Carol C, and Day, Delbert E. Sealing glasses for titanium and titanium alloys. United States: N. p., 1997. Web.
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Brow, Richard K, McCollister, Howard L, Phifer, Carol C, & Day, Delbert E. Sealing glasses for titanium and titanium alloys. United States.
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Brow, Richard K, McCollister, Howard L, Phifer, Carol C, and Day, Delbert E. Wed . "Sealing glasses for titanium and titanium alloys". United States. https://www.osti.gov/servlets/purl/871050.
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@article{osti_871050,
title = {Sealing glasses for titanium and titanium alloys},
author = {Brow, Richard K and McCollister, Howard L and Phifer, Carol C and Day, Delbert E},
abstractNote = {Barium lanthanoborate sealing-glass compositions are provided comprising various combinations (in terms of mole-%) of boron oxide (B.sub.2 O.sub.3), barium oxide (BaO), lanthanum oxide (La.sub.2 O.sub.3), and at least one other oxide selected from the group consisting of aluminum oxide (Al.sub.2 O.sub.3), calcium oxide (CaO), lithium oxide (Li.sub.2 O), sodium oxide (Na.sub.2 O), silicon dioxide (SiO.sub.2), or titanium dioxide (TiO.sub.2). These sealing-glass compositions are useful for forming hermetic glass-to-metal seals with titanium and titanium alloys having an improved aqueous durability and favorable sealing characteristics. Examples of the sealing-glass compositions are provided having coefficients of thermal expansion about that of titanium or titanium alloys, and with sealing temperatures less than about 900.degree. C., and generally about 700.degree.-800.degree. C. The barium lanthanoborate sealing-glass compositions are useful for components and devices requiring prolonged exposure to moisture or water, and for implanted biomedical devices (e.g. batteries, pacemakers, defibrillators, pumps).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}
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Works referenced in this record:

The glass sealing properties of titanium and zirconium
journal, October 1954

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