Abstract
A technique is described for the dynamic measurement of selected thermophysical properties of electrically conducting solids in the temperature range 1100 K to the melting point. The technique is based on rapid resistive self-heating of the specimen from room temperature to any desired high temperature in less than several seconds by the passage of an electrical current pulse through it on measuring the pertinent quantities, such as current, voltage, with sub-millisecond time resolution. The pulse-heating technique is applied to strip specimens. In order to obtain the true temperature and normal spectral emissivity of metallic strip specimens, the technique of multi-wavelength pyrometry is mainly used. The heat capacity, electrical resistivity, total hemispherical emissivity are evaluated in the temperature range 1100 K to the melting point.
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