Paper About NonContact Electrical Resitivity Measurement Technique for Molten Metal

Many information regarding data, resistivity, the thermal conductivity, and magnetic field are described inside the paper. The paper gives you info like electrical resistivity, rotational frequency, thermal conductivity, and electrical conductivity.

Inside the paper you can find explanation regarding measurement, thermophysical properties, spectrum, and schematic diagram. The following are chosen from the paper:

The technique is based on a conducting drop that is levitated by the high-temperature electrostatic levitator in a high vacuum. This technique, which utilizes the principle of the asynchronous induction motor, measures the relative changes in torque as a function of temperature by applying a rotating magnetic field to the sample. Changes in electrical resistivity are related to the changes in measured torque using the formula developed for the induction motor. Validity of this technique was demonstrated using a pure aluminum sample around its melting temperature. When the measurement results were calibrated by a literature value of resistivity at the melting point, our resistivity data around the melting point could be expressed by r liq 24.19 cm over T m 1160 K, r solid 10.77 1.421 10 2 ( T T m ) cm 1.306 10 2 ( T T m ) over 700 K T m , and the thermal conductivity as determined by the Wiedemann–Franz–Lorenz law from the resistivity data was given by liq( T ) 94.61 4.41 10 2 ( T T m ) W m 1 K 1, 1 2 K 1.

Furthermore, this paper contains discussion about conductivity, electrostatic, and temperature electrostatic levitator.

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