Patent · US Expired

Process for joining metallic and ceramic materials

US4927475A · kind A · utility

4Cited by

4References

2Claims

0Family size

Assignee

Asea Brown Boveri, S.A. · CH

Inventors

Gunther Steinleitner · Schriesheim, DE
Philipp Roze · Wiesloch, DE

Key dates

Filing date	Oct 31, 1988
Grant date	May 22, 1990
Priority date	—
Expiry date	Oct 31, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A process for joining components having ceramic and metallic joining surfaces provides a permanent and complete joint with ceramic surfaces despite metal-oxide layers on the metal or metal-alloy joining surfaces. A glass coating is applied to the ceramic joining surface before joining. The glass contains at least 5 to 20% by weight of Na.sub.2 O, 30 to 60% by weight of B.sub.2 O.sub.3 and 20 to 60% by weight of SiO.sub.2. The surfaces of the components to be joined are then permanently joined to each other at a specified temperature and a specified pressure.

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