Elastic ceramic body and pressure sensor with an elastic ceramic body
US8176791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2007 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Jan 1, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An elastic ceramic body and a pressure sensor. The elastic ceramic body comprises: a base body of an elastic ceramic material; and a cover layer, which covers at least one section of a surface of the base body, wherein the cover layer is of a material other than that of the base body, and the cover layer comprises microcrystalline Al2O3 (corundum). The cover layer is preferably prepared in a sol gel process. The pressure sensor, comprises: a disk-shaped measuring membrane, which is embodied as an elastic ceramic body according to the above definition; and at least one membrane support body, on which the measuring membrane is connected at its edge region along an encircling joint to form a pressure-tight measuring chamber between the membrane support body and the measuring membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.