Patent · US Expired

Method for determining the adhesion of material layers on ceramic elements

US6070459A · kind A · utility

0Cited by

6References

12Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Siegfried Nees · Lauffen am Neckar, DE
Harald Neumann · Lambach, DE
Frank Stanglmeier · Heubach, DE

Key dates

Filing date	Mar 17, 1998
Grant date	Jun 6, 2000
Priority date	—
Expiry date	Mar 17, 2018

Classification

Technology area (CPC G)Physics
CPC primaryG01N19/04
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining the adhesion of material layers of any composition on sintered ceramic elements, in particular of material layers on sensor elements for determining gas constituents in gas mixtures. The coated ceramic elements are immersed in an immersion bath consisting of a protic acid, and then subjected to a shock-type heat treatment. Adhesion is then assessed.

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