Comparison of hot corrosion behavior of Ti6Al4V and TiAlN-coated Ti6Al4V alloys in Na2SO4 -V2O5 environment

Key Points

• TiAlN coating significantly enhances the oxidation resistance of Ti6Al4V, demonstrating a considerable reduction in corrosion rates.
• Hot corrosion tests in a Na2SO4 - V2O5 environment showed Ti6Al4V with TiAlN coating reduced weight loss by about 43% after 100 hours.
• Assessment involved comparative analysis of the microstructural changes and corrosion patterns of both alloys.
• Findings support the use of TiAlN coating in improving the durability of Ti6Al4V in high-temperature applications.