Lead-free glass material for use in sealing and, sealed article and method for sealing using the same
US7425518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Oct 20, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/9607
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.