Electrochemical corrosion behavior of Ti‐3Mo alloy under different accelerated corrosion tests

Abstract

The electrochemical corrosion behavior of Ti-3Mo alloys under different accelerated corrosion tests including seawater corrosion, soil corrosion, and stray current corrosion was investigated. Results showed that the i corr value gradually increased with the increase of NaCl/Na 2 SO 4 concentration, indicating a worsening corrosion resistance of Ti-3Mo alloy. The presence of stray current seriously destroyed the oxide film on the sample surface, and inhibited the regeneration of oxide film, thereby resulting in the deterioration of corrosion resistance. Besides this, the potential difference between duplex phases was prone to form a microgalvanic coupling, which promoted the dissolution of local regions.