Improvement of hydrogen absorption in Ti induced by ion irradiation

Irradiation at room temperature with 700 and 1500 keV H+ ions at a fluence of 1 × 1014 ions/cm2 of titanium samples was performed. The samples were hydrogenated at 300, 450 and 600 °C to study the way hydrogen is absorbed in pure titanium before and after being irradiated. ERDA and X-Ray diffraction analysis results show an increment in hydrogen uptake when hydrogenation temperature as well as irradiation energy are increased. SEM analysis shows changes in titanium surface due to ion irradiation, as well as micro-cracks formed during hydrogenation. The use of light ions during irradiation made possible to improve hydrogen absorption in pure titanium.