Patent · US Expired

Process for the production of composite systems having at least two inorganic ceramic layers

US5628848A · kind A · utility

9Cited by

7References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Karl-Hermann Friese · Leonberg, DE
Werner Gruenwald · Gerlingen, DE
Ulrich Eisele · Stuttgart, DE

Key dates

Filing date	Jan 9, 1995
Grant date	May 13, 1997
Priority date	—
Expiry date	Jan 9, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2237/76
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to composite systems having at least two layers which comprise different inorganic, ceramic phases and are produced by cosintering of different, finely divided inorganic materials arranged in layers. The composite systems are characterized in that at least two adjacent layers comprise a dense phase largely free of macropores. The layers are durably bonded to one another by sintering together of particles of the different materials at the phase boundary or boundaries. The composite systems and the processes for the production thereof are used, for example, in the manufacture of gas sensors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.