Experimental determination of interfacial energies for solid Sn in equilibrium with Sn-Mg-Zn liquid


ALTINTAS Y., ÖZTÜRK E., Aksoz S., Keslioglu K., Marasli N.

METALS AND MATERIALS INTERNATIONAL, cilt.21, ss.286-294, 2015 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 21 Konu: 2
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s12540-015-4148-9
  • Dergi Adı: METALS AND MATERIALS INTERNATIONAL
  • Sayfa Sayısı: ss.286-294

Özet

The equilibrated grain boundary groove shapes of solid Sn in equilibrium with Sn-Mg-Zn liquid were observed from a quenched sample by using a radial heat flow apparatus. The Gibbs-Thomson coefficient, solid-liquid interfacial energy and grain boundary energy of solid Sn were determined from the observed grain boundary groove shapes. The thermal conductivity of the eutectic solid phase for Sn-8.12 at% Mg-4.97 at% Zn alloy and the thermal conductivity ratio of the liquid phase to the solid phase for Sn-8.12 at% Mg-4.97 at% Zn alloy at eutectic temperature were also measured with a radial heat flow apparatus and a Bridgman-type growth apparatus, respectively. The Gibbs-Thomson coefficient, solid-liquid interfacial energy and grain boundary energy of solid Sn in equilibrium with Sn-Mg-Zn liquid were determined to be (8.3 +/- 0.6)x10(-8) Km, (118.5 +/- 14.2)x10(-3) Jm(-2) and (225.1 +/- 29.3)x10(-3) J m(-2) respectively from observed grain boundary groove shapes. A comparison of present results for solid Sn in the Sn-8.12 at% Mg-4.97 at% Zn alloy with the results obtained in previous works for similar solid Sn in equilibrium with different binary or ternary liquid was made.