Apparatus and method for materials processing utilizing a rotating magnetic field

Patent metadata

Field	Value
Publication number	US-9617189-B2
Application number	US-201314015490-A
Country	US
Kind code	B2
Filing date	Aug 30, 2013
Priority date	Aug 30, 2013
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

An apparatus for materials processing utilizing a rotating magnetic field comprises a platform for supporting a specimen, and a plurality of magnets underlying the platform. The plurality of magnets are configured for rotation about an axis of rotation intersecting the platform. A heat source is disposed above the platform for heating the specimen during the rotation of the plurality of magnets. A method for materials processing utilizing a rotating magnetic field comprises providing a specimen on a platform overlying a plurality of magnets; rotating the plurality of magnets about an axis of rotation intersecting the platform, thereby applying a rotating magnetic field to the specimen; and, while rotating the plurality of magnets, heating the specimen to a desired temperature.

First claim

The invention claimed is:

1. A method for materials processing utilizing a rotating magnetic field, the method comprising:
providing a specimen comprising two components placed adjacent to each other on a platform overlying a plurality of magnets, a first of the two components comprising an aluminum or magnesium alloy and a second of the two components comprising a carbon fiber-resin matrix composite;
rotating the plurality of magnets about an axis of rotation intersecting the platform, thereby applying a rotating magnetic field to the specimen; and
while rotating the plurality of magnets, heating the specimen to a desired temperature greater than or equal to a melting temperature of the aluminum or magnesium alloy,
wherein the two components are bonded together during the heating and the application of the rotating magnetic field.

2. The method of claim 1 , wherein the magnets are rotated at a speed of from about 60 rpm to about 10,000 rpm.

3. The method of claim 1 , wherein the rotating magnetic field applied to the specimen has a field strength of from about 100 G to about 10,000 G.

4. The method of claim 1 , wherein the rotating magnetic field has a frequency of from about 1 Hz to about 1500 Hz.

5. The method of claim 1 , wherein the specimen and the platform are translated with respect to the plurality of magnets during the rotating and heating.

6. The method of claim 1 , wherein the specimen comprises a film on a substrate.

7. The method of claim 6 , wherein the film comprises a plurality of nanoparticles dispersed therein.

8. The method of claim 1 , wherein, during the heating, only a portion of the specimen is heated to the desired temperature.

Assignees

• Ut Battelle Llc

Inventors

• Muralidharan Govindarajan
• Angelini Joseph A
• Murphy Bart L
• Wilgen John B

Classifications

• H01F41/0273

  Imparting anisotropy (methods and devices for magnetising permanent magnets H01F13/003) · CPC title

• C04B2237/402

  Aluminium · CPC title

• C04B37/021 Primary

  in a direct manner, e.g. direct copper bonding [DCB] · CPC title

• C04B2237/84

  Joining of a first substrate with a second substrate at least partially inside the first substrate, where the bonding area is at the inside of the first substrate, e.g. one tube inside another tube · CPC title

• C04B2237/385

  Carbon or carbon composite · CPC title