Program

P.79 -- Poster, NCTP-41

Date: Wednesday, 3 August 2016

Time: 08h30 - 10h00

Thermodynamic property of binary interstitial alloy with FCC structure: Dependence on temperature and concentration of interstitial atoms

Nguyen Quang Hoc (1), Dinh Quang Vinh (1) and Le Hong Viet (2)

(1)Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi (2) Tran Quoc Tuan University, Co Dong, Son Tay Town, Hanoi

The analytic expressions of the thermodynamic quantities such as the mean nearest neighbor distance, the free energy, the isothermal and adiabatic compressibilities, the isothermal and adiabatic elastic modulus, the thermal expansion coefficient, the heat capacities at constant volume and at constant pressure, the entropy of binary interstitial alloy with face-centered cubic (FCC) structure with the concentration of interstitial atoms is very small are derived by the statistical moment method. The obtained expressions of these quantities depend on temperature and concentration of interstitial atoms. The theoretical results are applied to interstitial alloy AuSi. In the case when the concentration of interstitial atoms is equal to zero, we obtain the thermodynamic quantities of main metal. Our calculated results for the thermal expansion coefficient and the heat capacity under constant pressure of main metal are in good agreement with experiments.

Presenter: Dinh Quang Vinh