An Inductive Technique for Electrical Conductivity Measurements on Molten Metals

A computer-controlled rotational technique to measure the electrical resistivity of solid and molten metals was developed.The electrical resistivities of pure metals (aluminum, indium, lead, and tin) and the low-melting point alloy LMA- 158 in the solid and liquid states were measured.The results also show that there is a linear relationship between electrical resistivity and temperature in both the solid and the liquid states of the test materials.Good agreement was found between the experimental data and predictions from the literature.The data were used to estimate the temperature coefficients of electrical resistivity of test specimens over a wide range of temperatures including the melting point of the metals.Good agreement between experimental data and predictions made by previous researchers for the temperature coefficients was achieved.