Joining Of Parts Via Magnetic Heating Of Metal-Aluminum Powders
AssigneeTrustees of Dartmouth College
InventorIan Baker
Life of this patent
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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.
Claims20
A method for joining at least two parts, comprising:
- dispersing a joining material including a nanocrystalline metal-aluminum powder at an interface between at least two parts to be joined;
- and
- applying an alternating magnetic field (AMF) having a magnetic field strength and frequency suitable for inducing magnetic hysteresis losses in the metal-aluminum powder for a period that raises temperature of the metal-aluminum powder to an exothermic transformation temperature where the metal-aluminum powder melts and resolidifies as a metal aluminide solid having a non-magnetic configuration.
Dependencies are inferred from the claim text.