Patent · US Expired

Process for joining workpieces of metal or ceramic by boundary surface diffusion

US5009359A · kind A · utility

17Cited by

6References

1Claims

0Family size

Assignee

Forschungszentrum Jülich GmbH · DE

Inventors

Detlev Stover · Niederzier, DE
Hans Peter Buchkremer · Heinsberg, DE
Rudolf Hecker · Jülich, DE

Key dates

Filing date	May 9, 1990
Grant date	Apr 23, 1991
Priority date	—
Expiry date	May 9, 2010

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K20/14
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The following steps are performed for joining workpieces of metal or ceramic to each other by boundary surface diffusion at the junction location. After laying together the surfaces at which the workpieces are to be joined together, a layer is applied to the outer edge of the joint location consisting of a material compatible with the material of the parts to be joined and mechanically stable under high static pressure. The layer is fixed and sealed. Thereafter the workpieces are diffusion welded by hot isostatic pressing (HIP). A layer meeting the requirements of this process can be applied by plasma spraying onto the region of the seam at the outer edge of the junction location.

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