Thermal conductivity of liquid tin and indium

The present paper reports new measurements of the thermal conductivity of l iquid tin and indium. The measurements have been performed at atmospheric p ressure in a range of temperatures from 450 to 750 K using a new experiment al method based on the principle of the transient hot wire technique. The p ar ticular version of the technique employed for molten metals has been sho wn to have an accuracy in the measurement of the thermal conductivity of mo lten metals of +/-2%. Ultimately. it ia intended that the technique operate in a wide range of temperatures. from ambient up to 1200 K, and work is in progress to increase the working temperature and to extend the range of me asurements. The results are compared with experimental data reported in the literature by other authors and with predictions of the Wiedemann and Fran z law.