Experimental Determination of Interfacial Energy for Solid Zn Solution in the Sn-Zn Eutectic System


Meydaneri F., Payveren M., SAATÇİ B. , Özdemir M., Marasli N.

METALS AND MATERIALS INTERNATIONAL, vol.18, no.1, pp.95-104, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1007/s12540-012-0012-3
  • Title of Journal : METALS AND MATERIALS INTERNATIONAL
  • Page Numbers: pp.95-104

Abstract

The grain boundary groove shapes for Zn solid solution in equilibrium with Sn-Zn eutectic liquid were observed with a radial heat flow apparatus. From the observed grain boundary groove shapes, the Gibbs-Thomson coefficient, the solid-liquid and the grain boundary energy for the Zn solid solution in equilibrium with Sn-Zn eutectic liquid were determined to be (2.32 +/- 0.13)x10(-8) Km, (120.87 +/- 13.29)x10(-3) J.m(-2) and (194.76 +/- 23.37)x10(-3) J.m(-2), respectively. The termal conductivity of the eutectic Sn- 9 wt% Zn solid solution, kappa(S), was obtained as 74.74 W/Km by using a radial heat flow apparatus. The thermal conductivity ratio of the eutectic liquid to the eutectic solid, R = kappa(L)/kappa(S) was found to be 0.58 with a Bridgman-type directional growth apparatus. Thus, the value of the thermal conductivity of eutectic Sn-9 wt% Zn liquid solution, kappa(L), was obtained as 43.82 W/Km.