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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 C, and generally about 700--800 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). 1 fig.

Inventors:
; ; ;
Issue Date:
Research Org.:
Sandia Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
516946
Patent Number(s):
5,648,302
Application Number:
PAN: 8-713,294
Assignee:
Sandia Corp., Albuquerque, NM (United States) SNL; SCA: 360600; PA: EDB-97:118660; SN: 97001831615
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 15 Jul 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SEALING MATERIALS; GLASS; CHEMICAL COMPOSITION; SEALS; TITANIUM ALLOYS; USES; THERMAL EXPANSION

Citation Formats

Brow, R.K., McCollister, H.L., Phifer, C.C., and Day, D.E. Sealing glasses for titanium and titanium alloys. United States: N. p., 1997. Web.
Brow, R.K., McCollister, H.L., Phifer, C.C., & Day, D.E. Sealing glasses for titanium and titanium alloys. United States.
Brow, R.K., McCollister, H.L., Phifer, C.C., and Day, D.E. Tue . "Sealing glasses for titanium and titanium alloys". United States.
@article{osti_516946,
title = {Sealing glasses for titanium and titanium alloys},
author = {Brow, R.K. and McCollister, H.L. and Phifer, C.C. and Day, D.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 C, and generally about 700--800 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). 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {7}
}