Change in the properties of BT-23 titanium alloy induced by implantation of iron and zirconium ions followed by exposure to a low-energy high-currentelectron beam

Atomic physics methods, atomic force microscopy, and testing of microhardne ss, wear resistance, and friction coefficient were used to investigate Ti-4 1-V-41-Al-18 samples implanted with iron (60 kV) and zirconium (40 kV) ions , and then exposed to a high-current electron beam with energy fluxes of 2. 7 and 5.5 J/cm(2). The maximum concentration of iron ions is 16.5 at.% at a depth of 85 nm and that of zirconium ions 0.85 at.% at 56 nm. After double implantation, the friction coefficient decreases and the wear resistance i ncreases. After implantation and high-current electron beam treatment, the depth of the hardened layer and the wear resistance increase. (C) 1999 Amer ican Institute of Physics. [S1063-7850(99)01208-2].