High dose intense implantation of multiple-charge ions Al, Ti, C into α-iron

Variations of defect structure, of element and phase composition of α-Fe surface layers resulting from high-dose implantation by Ti, Al, C ions are studied using slow positron beam, by means of electron Moessbauer spectroscopy and resonance nuclear reaction technique. Maximal depth of the layer with the increased concentration of crystal structure defects in α-Fe implanted by different ions characterized by radiation high doses is shown to be under 300-350 nm and to be comparable with ion maximal range. Maximum effect of microhardness increase, reduction of depreciation and friction factor of α-Fe is observed due to implantation by titanium ions and lower one - at aluminium irradiation. 27 refs.; 8 figs