Direct brazing of refractory metal features
US6131796A · kind A · utility
4Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1997 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Oct 30, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K2101/40
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A brazing method for the direct bonding of a metallic item to a refractory metal without the need for an adhesion layer. The direct brazing process uses a Cu--Ag--Ni alloy which eliminates the need for the steps of plating a refractory metal to be bonded to a metallic material with a nickel layer (or other nickel-containing adhesion layer) and diffusion annealing the plated refractory metal prior to brazing. The brazed joint produced by the direct brazing method between a refractory metal and a metallic item has a substantially reduced layer of nickel in the as-brazed joint which improves the mechanical properties of the joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.