Glass to metal sealing process
US4888037A · kind A · utility
6Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1988 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Aug 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C27/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A single-step process is disclosed for hermetically sealing a glass to a metal having similar coefficients of thermal expansion without carrying out the conventional pretreatment steps of decarburization and oxidization by heating to at least the melting point of the glass in an atmosphere containing from about 0.5 to 2.5 volume percent of water vapor, 0 to about 5 volume percent of hydrogen gas and the balance an inert gas, such as nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.