Growth and stability of surface chemical compounds in interaction between Be and $(10\bar{1}0)$ Re surface

It is shown that the adsorption of Be on Re $(10\bar{1}0)$ in the temperature range of 850–950 K leads to the formation of specific adsorption states – surface chemical compounds (SC) of ReBe stoichiometry with a concentration of adsorbed $N_{\mathrm{Be}}$ atoms of $\sim$ 1.4 $\cdot$ 10$^{15}$ cm$^{-2}$. A multilayer film of beryllium (3–4 layers) is destroyed upon heating, and at 900 K all Be atoms leave the surface into the bulk of rhenium, except those that are part of the SC; atoms from the SC, in turn, actively dissolve at $T>$ 1050–1150 K. This corresponds to a decrease in the activation energy of dissolution upon the formation of SC from about 3.3 to 2.7 eV. Thermal desorption of beryllium takes place only at $T>$ 2100 K due to the emergence of Be atoms dissolved in the bulk of the metal onto the surface.