Meydaneri, FatmaSaatçi, Buket2025-01-212025-01-2120101308-5514https://dergipark.org.tr/tr/download/article-file/353301https://dergipark.org.tr/tr/pub/umagd/issue/31719/345715https://hdl.handle.net/20.500.12587/19874The variations of thermal conductivities of solid phases versus temperature for pure Sn and eutectic Sn-3.5 wt. % Ag, Sn- 1.5 wt. % Ag binary alloys were measured with a radial heat flow apparatus. The thermal conductivities of the solid phases at their melting temperature were also found to be 0.606 ± 0.06, 0.84 ± 0.09, 0.69 ± 0.07 W/K.cm. From the graphs of the solid phases thermal conductivity variations versus temperature, temperature coefficients for pure Sn, pure Ag and eutectic Sn- 3.5 wt. % Ag, Sn- 1.5 wt. % Ag binary alloys were found to be 0.00098, 0.00024, 0.00087, 0.0014 K-1, respectively. The thermal conductivity ratios of liquid phase to solid phase for the pure Sn and eutectic Sn-3.5 wt. % Ag binary alloy at their melting temperature were found to be 1.11 and 1.09 with a Bridgman type directional solidification apparatus. Thus the thermal conductivities of liquid phases for pure Sn and eutectic Sn-3.5 wt. % Ag binary alloy at their melting temperature were evaluated to be 0.67 and 0.92 W/K.cm, respectively by using the values of solid phase thermal conductivities, ?S and the thermal conductivity ratios of liquid phase to solid phase, R.eninfo:eu-repo/semantics/openAccessThermal ConductivityRadial Heat FlowDirectional SolidificationAg-Sn AlloyThermal CoefficientArticle21-8191345715