Interaction of Be atoms with (111) Ir surface.

It is shown that, when sputtered onto the surface of (111) Ir face in temperature range 1100-1250 K, beryllium atoms form a chemical compound stoichiometry 3 Be with concentration adsorbed N =5·10 14 cm -2 , after which newly deposited dissolve metal bulk. The itself destroyed due to dissolution 1250-1400 K an activation energy increasing from 3.2 eV 3.7 decreasing concentration. At T>1400 thermal desorption channel switched on. formation significantly lowers barrier E for bulk iridium by Delta E>1.7 eV. Keywords: iridium, beryllium, compounds, dissolution, intermetallic compounds.