Patent · US Expired

Method of making high-strength brazed joints

US5160090A · kind A · utility

13Cited by

8References

12Claims

0Family size

Assignee

Schwarzkopf Technologies Corporation · US

Inventors

Christian Friedrich · Munich, DE
Nikolaus Reheis · Jerzens, AT
Walter Thalmann · Breitenwang, AT

Key dates

Filing date	Sep 20, 1991
Grant date	Nov 3, 1992
Priority date	—
Expiry date	Sep 20, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2237/704
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a method of making high-strength brazed joints in metal/ceramic and ceramic/ceramic composite materials. The brazing surface of the ceramic part is structured prior to brazing by introducing bores having an average diameter in the range of 50 .mu.m-500 .mu.m and a depth in the range of 100 .mu.m-2 mm. Preferably, the structuring is effected by laser working. Brazing is subsequently carried out in a conventional manner. The resulting joint displays increased strength characteristics and resistance to thermal stresses over joints produced by conventional methods.

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