DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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 » a vibration of the conductive material.« less

Inventors:
 [1];  [2];  [1];  [1];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (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 = {2009},
month = {5}
}

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


Resonant oscillation of a liquid metal column driven by electromagnetic Lorentz force sources
journal, April 1999


Effects of vibration during solidification
journal, January 1981


Action of high intensity ultrasound on solidifying metal
journal, March 1987


Effect of 30T magnetic field on transformations in a novel bainitic steel
journal, March 2005