Thermal Coefficients and Thermal Conductivities of Solid and Liquid Phases for Pure Ag, Pure Sn and Their Binary Alloys
[ X ]
Date
2010
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Kırıkkale Üniversitesi
Access Rights
info:eu-repo/semantics/openAccess
Abstract
The 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.
Description
Keywords
Thermal Conductivity, Radial Heat Flow, Directional Solidification, Ag-Sn Alloy, Thermal Coefficient
Journal or Series
Uluslararası Mühendislik Araştırma ve Geliştirme Dergisi
WoS Q Value
Scopus Q Value
Volume
2
Issue
1-81
