Surface energy and electron work function for polimorphyc modifications of titanium

In this work, the surface energy of titanium crystal faces was estimated using the electron-statistical method, taking into account the contributions of the dispersion, polarization, and oscillation corrections. Using an analytical relationship, the values of the work function of close-packed faces of polymorphic modifications of titanium are calculated from the values of the surface energy of single crystals taking into account the crystal structure. The influence of polymorphic transformation and temperature on the anisotropy of the studied properties is shown. Based on the values of the surface and interfacial energies, which consist of the average configurational energy and the energy of chemical interaction of two parts of the metal, the cohesive energy of - and -titanium is estimated and its dependence on temperature is shown. On the example of tungsten-titanium and molybdenum-titanium systems, the fundamental possibility of calculating the change in the work function depending on the concentration of the surface-active component in bimetallic systems is shown, which makes it possible to predict the service life of the material.