Theoretical study of the elastic properties of titanium nitride Article

cited authors

  • CHEN, D; CHEN, J; ZHAO, Y; YU, B; WANG, C; SHI, D

fiu authors

abstract

  • The equilibrium lattice parameter, relative volume V/V0, elastic constants Cij, and bulk modulus of titanium nitride are successfully obtained using the ab initio plane-wave pseudopotential (PW-PP) method within the framework of density functional theory. The quasi-harmonic Debye model, using a set of total energy vs molar volume obtained with the PW-PP method, is applied to the study of the elastic properties and vibrational effiects. We analyze the relationship between the bulk modulus and temperature up to 2000 K and obtain the relationship between bulk modulus B and pressure at diffierent temperatures. It is found that the bulk modulus B increases monotonously with increasing pressure and decreases with increasing temperature. Moreover, the Debye temperature is determined from the non-equilibrium Gibbs functions. © 2009 The Chinese Society for Metals.

publication date

  • April 1, 2009

Digital Object Identifier (DOI)

start page

  • 146

end page

  • 152

volume

  • 22

issue

  • 2