NDLI: Material processing in electric and magnetic fields at microwave frequencies in a single mode cavity

Content Provider	IEEE Xplore Digital Library
Author	Agarwal, D. Roy, R. Peelamedu, R. Cheng, J.P. Fang, Y.
Copyright Year	2004
Description	Author affiliation: Mater. Res. Inst., Pennsylvania State Univ., University Park, PA, USA (Agarwal, D.; Roy, R.; Peelamedu, R.; Cheng, J.P.; Fang, Y.)
Abstract	Summary form only given. In this presentation we report the effect of electric and magnetic fields at 2.45 GHz frequency on the heating behavior of variety of materials. The survey of variety of samples of metals, ceramics, composites and magnetic materials showed remarkable differences in their heating behaviors and microstructural developments. It was observed that ferrites, dielectric insulators such as BaTiO/sub 3/ or TiO/sub 2/, could be rendered non-crystalline (amorphous) in 5-30 seconds, without even melting, when processed in 2.45 GHz single mode cavity, at the magnetic node alone. The magnetic properties of these commercial materials can be controlled by exposure to these fields. Even Silicon metal also showed decrystallization but in E-field. The results establish conclusively that the magnetic field interaction causes variety of losses and dominates the heating of almost all materials and often produces unexpected results.
Sponsorship	Plasma Sci. and Applications Committee of the IEEE Nuclear and Plasma Sci. Soc
File Size	65960
File Format	PDF
ISBN	0780383346
ISSN	07309244
DOI	10.1109/PLASMA.2004.1340110
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Materials processing Magnetic fields Microwave frequencies Magnetic materials Dielectric materials Resistance heating Ceramics Ferrites Dielectrics and electrical insulation Amorphous materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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