TY - JOUR
T1 - Thermophysical properties and structure of stable and metastable liquid cobalt
AU - Wang, H. P.
AU - Wei, B.
PY - 2010/2/8
Y1 - 2010/2/8
N2 - The thermophysical properties and structure of liquid cobalt are investigated in the temperature range from 1000 to 2400 K. The properties include density, molar volume, enthalpy and specific heat at both normal and undercooled states. The density decreases linearly with the increase of temperature. At the melting point, the value of density is 7.71 g cm-3, and its temperature coefficient is - 7.68 × 10- 4 g cm- 3 K- 1. The molar volume increases with the increase of temperature in a nonlinear manner. The enthalpy increases linearly with the rise of temperature. This indicates that the specific heat changes little with temperature: 40.11 J mol-1 K-1. Furthermore, the liquid structure is studied by analyzing the pair correlation function. With the increase of undercooling, the degree of short range order of liquid cobalt becomes more and more remarkable, which is deduced by the appearance of a saddle at the second neighbor distance.
AB - The thermophysical properties and structure of liquid cobalt are investigated in the temperature range from 1000 to 2400 K. The properties include density, molar volume, enthalpy and specific heat at both normal and undercooled states. The density decreases linearly with the increase of temperature. At the melting point, the value of density is 7.71 g cm-3, and its temperature coefficient is - 7.68 × 10- 4 g cm- 3 K- 1. The molar volume increases with the increase of temperature in a nonlinear manner. The enthalpy increases linearly with the rise of temperature. This indicates that the specific heat changes little with temperature: 40.11 J mol-1 K-1. Furthermore, the liquid structure is studied by analyzing the pair correlation function. With the increase of undercooling, the degree of short range order of liquid cobalt becomes more and more remarkable, which is deduced by the appearance of a saddle at the second neighbor distance.
KW - Liquid metal
KW - Liquid structure
KW - Thermophysical property
KW - Undercooling
UR - http://www.scopus.com/inward/record.url?scp=74149088588&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2009.12.045
DO - 10.1016/j.physleta.2009.12.045
M3 - 文章
AN - SCOPUS:74149088588
SN - 0375-9601
VL - 374
SP - 1083
EP - 1087
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 8
ER -