Nanosized Nucleus-Supercooled Liquid Interfacial Free Energy and Thermophysical Properties of Early and Late Transition Liquid Metals

作者：Kang Dong Hee; Jeon Sangho; Yoo Hanbyeol; Ishikawa Takehiko; Okada Junpei T; Paradis Paul Francois; Lee Geun Woo^*

来源：Crystal Growth & Design, 2014, 14(3): 1103-1109.

DOI：10.1021/cg401597p

Crystal-liquid interfacial free energy is important to understand in crystal study, for example, nucleation, crystal growth, and vitrification. Here, we report the nanosized nucleus-supercooled liquid interfacial free energy of early and late transition liquid metals using the electrostatic levitation (ESL) technique and classical homogeneous nucleation theory (CNT). For the estimation of the interfacial free energy, we obtained thermophysical parameters of the transition liquid metals (Ti, Fe, Ni, Zr, Nb, Rh, and Hf), such as hypercooling limit (Delta T-hyp), specific heat (C-p), total hemispherical emissivity (epsilon(T)), and density (rho). The estimated interfacial free energies of Ti, Ni, and Zr agreed well with a previous report having similar hypercooling limit and fusion enthalpy, while Fe, Nb, Rh, and Hf show different values from the report. This reflects the importance of accurate measurement of the two quantities. The obtained Turnbull's coefficients (alpha) of the liquid metals is higher than 0.45. The interfacial free energy is discussed with configurationally different local order of the crystal and the liquid.

• 出版日期2014-3