Nickel base brazing alloy and method
US4507264A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Dec 1, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K35/304
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A nickel base diffusion brazing alloy suitable for brazing gamma and gamma prime strengthened superalloys at temperatures as low as 2150.degree. F. The improved brazing alloy consists essentially of the following, in weight percent: 12 to 14% chromium, 2 to 4% tantalum, 2.5 to 4% boron, 0.01 to 0.06% yttrium, 2.5 to 5% aluminum, less than 0.03% carbon and the balance nickel, with incidental impurities. The preferred composition of the nickel base diffusion brazing alloy comprises 12.5 to 13.5% chromium, 2 to 4% tantalum, 2.5 to 3.5% boron, 0.01 to 0.03 yttrium, 3.5 to 4.5% aluminum, less than 0.03% carbon and the balance nickel, with incidental impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.