Generalization of international centrifugal zone growth of metal-ceramic composites. Progress report, December 1, 1975--November 30, 1976 [electronic resource].
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1976.
- Physical Description:
- Pages: 10 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Research conducted to develop a realistic model of Internal Centrifugal Zone Growth (ICZG) and to utilize the predictive capacities of this model to improve and extend present ICZG systems is reported. One-dimensional models for (hypothetical) infinitely large samples heated by long RF induction coils were previously developed and an S-curve instability phenomenon associated with spontaneous coupling of the RF field to materials whose electrical conductivity increases significantly with temperature was predicted. This model was extended to two dimensions to account for finite samples and coils. During the reporting period one-dimensional modeling was used in predicting additional instabilities (S shaped with a cusp) on melting which are ''piggy-back'' with the S-curve instabilities at lower temperatures. The low temperature S instability has been demonstrated for silicon; whereas, in cooperation with Oak Ridge, the predictive capacities of the modeling have been used to engineer around instabilities in the CrO/sub 3/-Mo systems and to extend ICZG to a number of other materials.
- Published through SciTech Connect., 08/01/1976., "coo-2407-5", Sekerka, R.F.; Hartzell, R.A., and Carnegie-Mellon Univ., Pittsburgh, Pa. (USA)
- Funding Information:
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