Pitting of Titanium

Experiments were conducted with pitting corrosion of the ends of titanium rods insulated on the sides with epoxy resin. The rods were potentiostated in the anode‐facing‐up position in chloride, bromide, and iodide solutions. After a small depth of corrosion a uniform current density was obtained characteristic of one‐dimensional mass transport and conduction. Current density is mass‐transport limited in the electrolyte and it appears that a salt film forms on the metal surface to absorb most of the potential applied.