Pitting corrosion performance of plasma oxidized Cp-Ti and effects of fabrication methods
Atik, B., Bozkurt, Y. B., Kavasoglu, Y. Seger, Kovaci, H., Celik, A.
In this study, the electrochemical corrosion properties of commercial pure titanium (Cp-Ti) samples produced by additive manufacturing and forging were compared by plasma oxidizing. Plasma oxidizing processes were carried out at temperatures of 650 degrees C and 750 degrees C for 1 h and 4 h. Electrochemical corrosion experiments were carried out in Simulated Body Fluid (SBF) using open circuit potential, cyclic potentiodynamic polarization and electrochemical impedance spectroscopy methods. It was found that the coating thickness of F 750 degrees C-4 h and S 750 degrees C-4 h samples was the highest. The corrosion resistance of the samples produced by additive manufacturing is lower than that produced by forging due to the Lack of fusion (LOF) effect. The barrier layer developed by the plasma oxidizing process significantly improved the corrosion performance of additive manufacturing by reducing the LOF effect. The minimum corrosion rate was obtained at S 750 degrees-4 h. While the total material loss due to corrosion was the lowest on this surface, the last corroded surface was F 750 degrees-4 h. The maximum resistance was observed on the plasma oxidized surfaces for the group produced by forging.
- Dergi
- SURFACE & COATINGS TECHNOLOGY
- Yıl
- 2024
- Cilt
- 478
- ISSN
- 0257-8972
- eISSN
- 1879-3347
- DOI
- 10.1016/j.surfcoat.2024.130384
- WoS UID
- WOS:001171665300001