Akademik Veri Yönetim Sistemi
Journal of Alloys and Compounds, cilt.487, sa.1-2, ss.103-108, 2009 (SCI-Expanded)
The equilibrated grain boundary groove shapes of solid ε (CuZn5) in equilibrium with Zn-1.75 at.% Cu peritectic liquid and solid ε (CuZn5) in equilibrium with solid Zn solution (Zn-2.83 at.% Cu) were observed from a quenched sample. The Gibbs-Thomson coefficient, solid-liquid interfacial energy and grain boundary energy of solid ε (CuZn5) in equilibrium with Zn-1.75 at.% Cu peritectic liquid have been determined to be (4.9 ± 0.3) × 10-8 K m, (76.0 ± 9.1) × 10-3 J m-2 and (150.3 ± 19.5) × 10-3 J m-2, respectively. For the first time, the equilibrated grain boundary groove shapes of solid ε (CuZn5) in equilibrium with solid Zn solution have been observed. The Gibbs-Thomson coefficient, solid-solid interfacial energy and grain boundary energy of solid ε (CuZn5) in equilibrium with solid Zn have also been determined to be (4.7 ± 0.3) × 10-8 K m, (72.9 ± 8.7) × 10-3 J m-2 and (144.1 ± 18.7) × 10-3 J m-2, respectively from the observed grain boundary groove shapes. The thermal conductivities of solid Zn solution and solid ε (CuZn5) phase (Zn-12 at.% Cu) have been measured with radial heat flow apparatus. The thermal conductivity ratios of the equilibrated liquid phase to solid phase for Zn-1.75 at.% Cu and Zn-12 at.% Cu alloys have also been measured with Bridgman type growth apparatus. © 2009 Elsevier B.V. All rights reserved.