Development of an electrostatic levitator and containerless processing of metals, alloys, and semiconductors

Won-Kyu Rhim

doi:10.1117/12.351285

6 July 1999 Development of an electrostatic levitator and containerless processing of metals, alloys, and semiconductors

Won-Kyu Rhim

Author Affiliations +

Proceedings Volume 3792, Materials Research in Low Gravity II; (1999) https://doi.org/10.1117/12.351285
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Present capability of the High Temperature Electrostatic Levitator (HTESL) at JPL for the containerless materials processing is described. The capability includes the measurements of various thermophysical properties and the studies of undercooling and nucleation phenomena. The thermophysical reports that can be measured include the density, the volume expansion, and ratio between the specific heat capacity and the hemispherical total emissivity, the surface tension,the viscosity, the spectral emissivity, and the electrical resistivity. For liquids where the Wiedemann-Franz-Lorenz law applies, their thermal conductivities can be determined indirectly from the electrical resistivities. The capability of determining the statistical nature of nucleation and the Temperature-Time-Transformation (T-T-T)curves has also been demonstrated. Experimental results on pure metals, alloys, and semiconductors were used to support the argument.

Citation Download Citation

Won-Kyu Rhim "Development of an electrostatic levitator and containerless processing of metals, alloys, and semiconductors", Proc. SPIE 3792, Materials Research in Low Gravity II, (6 July 1999); https://doi.org/10.1117/12.351285

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