High magnetic field ohmically decoupled non-contact technology
Abstract
Methods and apparatus are described for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field. A method includes applying a high magnetic field to at least a portion of a conductive material; and applying an inductive magnetic field to at least a fraction of the conductive material to induce a surface current within the fraction of the conductive material, the surface current generating a substantially bi-directional force that defines a vibration. The high magnetic field and the inductive magnetic field are substantially confocal, the fraction of the conductive material is located within the portion of the conductive material and ohmic heating from the surface current is ohmically decoupled from the vibration. An apparatus includes a high magnetic field coil defining an applied high magnetic field; an inductive magnetic field coil coupled to the high magnetic field coil, the inductive magnetic field coil defining an applied inductive magnetic field; and a processing zone located within both the applied high magnetic field and the applied inductive magnetic field. The high magnetic field and the inductive magnetic field are substantially confocal, and ohmic heating of a conductive material located in the processing zone is ohmically decoupled frommore »
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 988142
- Patent Number(s):
- 7534980
- Application Number:
- 11/393,378
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Wilgen, John, Kisner, Roger, Ludtka, Gerard, Ludtka, Gail, and Jaramillo, Roger. High magnetic field ohmically decoupled non-contact technology. United States: N. p., 2009.
Web.
Wilgen, John, Kisner, Roger, Ludtka, Gerard, Ludtka, Gail, & Jaramillo, Roger. High magnetic field ohmically decoupled non-contact technology. United States.
Wilgen, John, Kisner, Roger, Ludtka, Gerard, Ludtka, Gail, and Jaramillo, Roger. Tue .
"High magnetic field ohmically decoupled non-contact technology". United States. https://www.osti.gov/servlets/purl/988142.
@article{osti_988142,
title = {High magnetic field ohmically decoupled non-contact technology},
author = {Wilgen, John and Kisner, Roger and Ludtka, Gerard and Ludtka, Gail and Jaramillo, Roger},
abstractNote = {Methods and apparatus are described for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field. A method includes applying a high magnetic field to at least a portion of a conductive material; and applying an inductive magnetic field to at least a fraction of the conductive material to induce a surface current within the fraction of the conductive material, the surface current generating a substantially bi-directional force that defines a vibration. The high magnetic field and the inductive magnetic field are substantially confocal, the fraction of the conductive material is located within the portion of the conductive material and ohmic heating from the surface current is ohmically decoupled from the vibration. An apparatus includes a high magnetic field coil defining an applied high magnetic field; an inductive magnetic field coil coupled to the high magnetic field coil, the inductive magnetic field coil defining an applied inductive magnetic field; and a processing zone located within both the applied high magnetic field and the applied inductive magnetic field. The high magnetic field and the inductive magnetic field are substantially confocal, and ohmic heating of a conductive material located in the processing zone is ohmically decoupled from a vibration of the conductive material.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 19 00:00:00 EDT 2009},
month = {Tue May 19 00:00:00 EDT 2009}
}
Works referenced in this record:
In situ evidence of enhanced transformation kinetics in a medium carbon steel due to a high magnetic field
journal, July 2004
- Ludtka, G. M.; Jaramillo, R. A.; Kisner, R. A.
- Scripta Materialia, Vol. 51, Issue 2, p. 171-174
Resonant oscillation of a liquid metal column driven by electromagnetic Lorentz force sources
journal, April 1999
- Makarov, Sergey; Ludwig, Reinhold; Apelian, Diran
- The Journal of the Acoustical Society of America, Vol. 105, Issue 4
Effects of forced electromagnetic vibrations during the solidification of aluminum alloys: Part II. solidification in the presence of colinear variable and stationary magnetic fields
journal, June 1996
- Vivès, Charles
- Metallurgical and Materials Transactions B, Vol. 27, Issue 3
Effects of vibration during solidification
journal, January 1981
- Campbell, J.
- International Metals Reviews, Vol. 26, Issue 1
Action of high intensity ultrasound on solidifying metal
journal, March 1987
- Abramov, O. V.
- Ultrasonics, Vol. 25, Issue 2
Effect of 30T magnetic field on transformations in a novel bainitic steel
journal, March 2005
- Jaramillo, R. A.; Babu, S. S.; Ludtka, G. M.
- Scripta Materialia, Vol. 52, Issue 6
Broad prospects for commercial application of the ultrasonic (cavitation) melt treatment of light alloys
journal, July 2001
- Eskin, G. I.
- Ultrasonics Sonochemistry, Vol. 8, Issue 3
Effects of forced electromagnetic vibrations during the solidification of aluminum alloys: Part I. solidification in the presence of crossed alternating electric fields and stationary magnetic fields
journal, June 1996
- Vivès, Charles
- Metallurgical and Materials Transactions B, Vol. 27, Issue 3