The purpose of this paper is to study the effects of solid-solution iron and Fe3+ ions on the electrochemical properties, hydrogen absorption, and the microstructure of titanium. The experiments are carried out for titanium in crevice and non-creviced specimens and in active and passive states. The microstructures and the oxide layers are studied by conventional and surface analytical methods.
The test materials were commercially pure titanium (Grade 1) and dilute titanium-iron alloys. The iron contents of the Ti-Fe specimens varied between 0.05 wt-% and 2.5 wt-%. The corrosion potential measurements of titanium in crevice and in non-creviced situation were performed at elevated temperatures (95 C) in the 15 wt% NaCl solution, in 15 wt% NaCl solution with 1 wt% HCl, in 15 wt% NaCl with 1 wt% HCl and 0.13 wt% FeCl3, in 15 wt% NaCl with 3 wt% HCl and 0.13 wt% FeCl3, in...
