STUDY OF THERMODYNAMIC PROPERTIES OF ZIRCONIUMUNDER HIGH PRESSURE Vu Van Hung, Le Dinh Hong and Nguyen Thu Ha Hanoi National University of Education, 136 Xuan Thuy street, Cau Giay, Hano
Trang 1STUDY OF THERMODYNAMIC PROPERTIES OF ZIRCONIUM
UNDER HIGH PRESSURE
Vu Van Hung, Le Dinh Hong and Nguyen Thu Ha
Hanoi National University of Education, 136 Xuan Thuy street, Cau Giay, Hanoi,
Vietnam
ABSTRACT: The moment method in statistical (SMM) dynamics is
used to study the thermodynamic quantities of zirconium taking into account the anharmonicity effects of the lattice vibrations and
hydrostatic pressures The thermodynamic quantities of zirconium are calculated as a function of the pressure The SMM calculations are performed by using the Lennard-Jones potential for the zirconium crystal with hcp and bcc structures Numerical results for lattice parameter, thermal expansion coefficient, specific heats at constant volume and those at the constant pressure C V and C P of zirconium crystal with bcc and hcp structures are found to be in good
agreement with experiment