Sealing glass
US4855261A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Dec 8, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/235
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to a sealing glass for use in bonding glass, ceramics and metals and specifies the composition of a sealing glass which is workable at moderate temperatures and is excellent in transparency and strength. Amorphous magnetic materials have themselves a crystallization temperature and when used in a magnetic head, the amorphous materials undergo crystallization in assembling the head at a sealing temperature higher than the crystallization temperature and becomes not only brittle but also deteriorated in magnetic characteristics so that the head becomes unsuitable for use. The present glass is advantageously used in such a case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.