Joining of parts via magnetic heating of metal-aluminum powders
US8172126B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2009 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Jun 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2224/83222
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method of joining at least two parts includes steps of dispersing a joining material comprising a multi-phase nanocrystalline magnetic metal-aluminum powder at an interface between the at least two parts to be joined and applying an alternating magnetic field (AMF). The AMF has a magnetic field strength and frequency suitable for inducing magnetic hysteresis losses in the metal-aluminum powder and is applied for a period that raises temperature of the metal-aluminum powder to an exothermic transformation temperature. At the exothermic transformation temperature, the metal-aluminum powder melts and resolidifies as a metal aluminide solid having a non-magnetic configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.