Research on Pb-Ag Alloys (II). Determination of the Solid Solubility of Ag in Pb

Seith has already published his study on the solid solubility of Ag in Pb. According to his results, the solid solubility is 0.1% Ag at the eutectic temperature (304°). We ascertained not only Seith’s results, but examined the solubility behavior in the lower temperature range than 200° in which he had not obtained exact values.According to the author’s experiment, the solid solubility did not change linearly, for example, at 180°, 0.04% Ag, 108°, 0.025% Ag and 78°, 0.01% Ag.For the determination of the solubility limit, the following experimental means were applied: (a) The measurment of electric resistance. (b) Differential thermal analysis. (c) Hardness test. (d) Thermal analysis. (e) X-ray analysis.