Substrate materials for magnetic heads with low flying height
US5595946A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 4, 1995 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | May 4, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/6455
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Substrate materials for magnetic heads consisting of 24-75 mol % of .alpha.-Al.sub.2 O.sub.3 and the remaining 76-25 mol % of TiC.sub.X O.sub.Y N.sub.Z, or TiC.sub.X O.sub.Y N.sub.Z containing a small amount of additives, that has a NaCl-type structure which retain known characteristics required on such materials and have controlled sizes of crystallites of Al.sub.2 O.sub.3 and TiC.sub.X O.sub.Y N.sub.Z, uniformly dispersed TiC.sub.X O.sub.Y N.sub.Z crystallites and, if any, additive elements, in which internal stress is relieved. The materials are intended for eliminating problems in machining to form steps and thus for fabricating high-precision thin-film heads for high-density recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.