Abstract
We have studied the corrosion electrochemical properties of titanium TS-5 pseudo-α alloy and VT-6 (α + β)-alloy after high-energy (E = 30 keV) ion implantation with nitrogen with a fluence of 2 · 1017 ion/cm2 and subsequent annealing in vacuum at a temperature of 803 K for 2 h, with a coating of titanium nitride and without it. To determine the limiting stages of the corrosion process and anodic dissolution of modified surfaces in 3% NaCl aqueous solution within the temperature range 293 – 363 K, we applied the temperature-kinetic method. It has been shown that the modification of the surface with nitrogen affects the potential of passivation beginning and the range of potentials of the passive region. We have also established that the structure of surface films determines the dissolution energy and effective activation energy.
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