Structure, Electrical Resistivity, Oxidation and Corrosion Behavior of Tin-Lead Eutectic Alloy

Abstract

The structure, electrical resistivity, oxidation and corrosion behaviors of the eutectic Sn-Pb alloy have been studied and analyzed using X-ray, Ohm’s law circuit, thermal gravimetric analysis (TGA) and chemical weight loss method, respectively. The results showed that, the alloy exhibited two phase mixtures of α-Pb and β-Sn. The I-V characteristic curve of this alloy was described and the room temperature electrical resistivity was calculated and found to be 24.6 ± 1 µΩ.cm. Also, the variation of electrical resistivity with temperature was described in the range from the room temperature to 91 ºC and the temperature coefficient of resistivity (TCR) was also calculated. Furthermore, it was found that, the alloy exhibited a good oxidation and corrosion resistance for long run.