High current, short length ion beam pulses appear to be a new alternative for surface property modification of solids, due to the combined effect of ion implantation with induced fast heating-cooling which this process presents. The repetitive pulsed nitrogen implantation (with a low energy plasma focus) of pure titanium with different pulse lengths (300 and 400 ns), and fluences per pulse ranging between 1.4 × 1014and 1 × 1015cm−2, with total accumulated fluences between 7 × 1014and 1.6 × 1016showed a surface heating effect with important compositional and physical changes in the layers close to the surface.