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Production of Materials with Superior Properties Utilizing High Magnetic Field

Oak Ridge National Laboratory

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Technology Marketing SummaryProcessing materials in a magnetic field is an innovative and revolutionary means to change materials and structural properties by tailoring the microstructure. Properties, equivalent or beyond, can be achieved with significantly less energy than materials treated by conventional thermal methods. New properties can also be created by manipulation of phase stability through the application of a high magnetic field.

Researchers at ORNL have developed various novel methods which offer improvements over current methods of creating materials with superior properties (structural, magnetic, electrical, optical, or acoustic). An apparatus and method have been developed for generating a magnetic field to improve the properties of the treated material through exposure to the magnetic field combined with thermal treatment. In addition, an apparatus and method have been developed for high magnetic field ohmically decoupled non-contact treatment of conductive materials in a high magnetic field to improve material properties.

DescriptionFor example, in metal processing alone, ORNL has developed various methods related to improving alloy production. These methods include: employing induction heating and a gas purge/quench system to provide temperature control during alloy production; the insertion and handling of ferromagnetic samples in a high magnetic field with high magnetic field gradient region without any effective forces being on the specimens; non-contacting ultrasonic treatment applied to the processing of metal alloys in either the solid and melt phase; creation of metal oxide coatings on one or more surfaces employing a magnetic field; and application of a magnetic field during solutionizing anneals in order to modify the extent of supersaturation of key elements resulting in creep strength improvement of the processed alloys.

A significant advantage of the novel methods developed is the broad applicability beyond alloy processing. The processing of materials in a magnetic field includes, but is not limited to individual parts such as diesel injectors, continuous feed materials such as wire or cables, carbon nanotubes, ceramics, and plastics, and can lead to enhancement of structural, magnetic, electrical, optical or acoustic characteristics for the materials processed.
Benefits
  • Efficient production of superior strength materials in a high magnetic field
  • Improvement in temperature control during alloy production
  • Improvement of alloy properties and properties of any material
  • Improvement in creep strength of processed alloys
Applications and Industries
  • Material processing
  • Alloy production
  • Surface coating
More InformationRoger Kisner, John Wilgen, Gerard Ludtka, Roger Jaramillo, Gail Ludtka, Thermal and High Magnetic Field Treatment of Materials and Associated Methods, U.S. Patent No. 7,161,124, issued January 9, 2007, U.S. Patent No. 7,745,765, issued June 29, 2010.

John Wilgen, Roger Kisner, Gerard Ludtka, Roger Jaramillo, High Magnetic Field Ohmically Decoupled Non-Contact Technology, U.S. Patent No. 7,534,980,
issued May 19, 2009.

Gerard Ludtka, Gail Ludtka, John Wilgen, Roger Kisner, Roger Jaramillo, Apparatus and Method for Magnetically Processing a Specimen, patent pending.

Gerard Ludtka, Gail Ludtka, John Wilgen, Roger Kisner, Method of Magnetically Processing an Iron- Carbon Alloy, patent pending.

Gerard Ludtka, Gail Ludtka, John Wilgen, Bart Murphy, Mitigated Force Carriage for High Magnetic Field Environments, patent pending.
Michael Brady, Gail Ludtka, Gail Ludtka,

Govindarajan Muralidharan, Don Nicholson, Orlando Rios, Yukinori Yamamoto, Magnetic Field Annealing for Improved Creep Resistance, patent pending.

Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 7,534,980
Patent
7,534,980
High magnetic field ohmically decoupled non-contact technology
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.
Oak Ridge National Laboratory 05/19/2009
Issued
Patent 7,161,124
Patent
7,161,124
Thermal and high magnetic field treatment of materials and associated apparatus
An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and schemes for thermally treating the workpiece by heating or cooling techniques in conjunction with the generated magnetic field so that the characteristics of the workpiece are effected by both the generated magnetic field and the thermal treatment of the workpiece.
Oak Ridge National Laboratory 01/09/2007
Issued
Patent 7,745,765
Patent
7,745,765
Thermal and high magnetic field treatment of materials and associated apparatus
An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and schemes for thermally treating the workpiece by heating or cooling techniques in conjunction with the generated magnetic field so that the characteristics of the workpiece are effected by both the generated magnetic field and the thermal treatment of the workpiece.
Oak Ridge National Laboratory 06/29/2010
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
UT-B IDs 200401490, 200501531, 200701867, 200802085, 200902312, 201002455, 201102675ProductionAvailable08/20/201208/20/2012

Contact ORNL About This Technology

To: Alex G. DeTrana<detranaag@ornl.gov>