Enhanced Corrosion Resistance of Ti6Al4V-ELI via TiO2 and TiO2/Hydroxyapatite Nanocomposite Coatings Grown by High Frequency Plasma Electrolytic Oxidation

1. B. Dikici, Z. Esen, O. Duygulu, and S.G. Koc Corrosion of Metallic Biomaterials, in Advances in Metallic Biomaterials: Tissues, Materials and Biological eds. Reactions, M. Niinomi, T. Narushima, and M. Nakai (Springer-Verlag Berlin Heidelberg 2015) 3, p 275–303.10.1007/978-3-662-46836-4_12 ↗

2. M. Niinomi, Mechanical Biocompatibilities of Titanium alloys for Biomedical Applications, J. Mech. Behav. Biomed. Mater., 2008, 1, p 30–42.10.1016/j.jmbbm.2007.07.001 ↗

3. M. Molaei, A. Fattah-alhosseini, M. Nouri, P. Mahmoodi, S.H. Navard, and A. Nourian, Enhancing cytocompatibility, antibacterial activity and corrosion resistance of PEO coatings on titanium using incorporated ZrO2 nanoparticles, Surf. Interface Anal., 2022, 30, 101967.10.1016/j.surfin.2022.101967 ↗

4. Y. Wu, K. Wan, J. Lu, C. Yuan, Y. Cui, R. Duan and, J. Yu, Research progress on surface modification of titanium implants, Coatings, 2025, 15, p 229.10.3390/coatings15020229 ↗

5. M. Aliofkhazraei, D.D. Macdonald, E. Matykina, E.V. Parfenov, V.S. Egorkin, J.A. Curran, S.C. Troughton, S.L. Sinebryukhov, S.V. Gnedenkov, T. Lampke, F. Simchen and H.F. Nabavi, Review of plasma electrolytic oxidation of titanium substrates: mechanism, properties, applications and limitations, Appl. Surf. Sci. Adv., 2021, 5, 100121.10.1016/j.apsadv.2021.100121 ↗

6. M. Shahmohammadi, Y. Sun, J.C.C. Yuan, M.T. Mathew, C. Sukotjo, and C.G. Takoudis, In vitro corrosion behavior of coated Ti6Al4V with TiO2, ZrO2, and TiO2/ZrO2 mixed nanofilms using atomic layer deposition for dental implants, Surf. Coat. Technol., 2022, 444, 128686.10.1016/j.surfcoat.2022.128686 ↗

7. A. Villamayor, T. Pomone, S. Perero, M. Ferraris, V.L. Barrio, E. G-Berasategui, and P. Kelly, Development of photocatalytic nanostructured TiO2 and NiO/TiO2 Coatings by DC magnetron sputtering for photocatalytic applications, Ceram. Int., 2023 in press.10.1016/j.ceramint.2023.03.058 ↗

8. C.A. Maestro, J.A. Moreto, T. Chiaramonte, R.V. Gelamo, C.J. de Oliveira, M.M. Santos, M.V. da Silva, A.H. Santo Bueno, R.M. Balestra and A.M. de Sousa Malafaia, Corrosion behavior and biological responses of a double coating formed on the Ti-6Al-4V alloy surface by using thermal oxidation and biomimetic deposition of bismuth-doped CaP, Surf. Coat. Technol., 2021, 15(425), 127717.10.1016/j.surfcoat.2021.127717 ↗

9. L. Zheng, S. Qian and X.Y. Liu, Induced antibacterial capability of TiO2 coatings in visible light via nitrogen ion implantation, Trans. Nonferrous Met. Soc. China, 2020, 30, p 171–180.10.1016/S1003-6326(19)65189-7 ↗

10. B. Dikici, M. Niinomi, M. Topuz, S.G. Koc, and M. Nakai, Synthesis of biphasic calcium phosphate (BCP) coatings on β-type titanium alloys reinforced with rutile-TiO2 compounds: adhesion resistance and in-vitro corrosion, J. Sol-Gel Sci. Technol., 2018, 87, p 713–724.10.1007/s10971-018-4755-2 ↗

11. S. Guan, L. Hao, H. Yoshida, T. Itoi, Y. Cheng, S. Seki, Y. Nishina, and Y. Lu, Enhanced photocatalytic activity and stability of TiO2/Graphene Oxide composites coatings by electrophoresis deposition, Mater. Lett., 2021, 286, 129258.10.1016/j.matlet.2020.129258 ↗

12. B. Makurat-Kasprolewicz and A. Ossowska, Recent advances in electrochemically surface treated titanium and its alloys for biomedical applications: a review of anodic and plasma electrolytic oxidation methods, Mater. Today Commun., 2023, 34, 105425.10.1016/j.mtcomm.2023.105425 ↗

13. F. Songur, B. Dikici, M. Niinomi, and E. Arslan, The plasma electrolytic oxidation (PEO) coatings to enhance in-vitro corrosion resistance of Ti–29Nb–13Ta–4.6Zr alloys: the combined effect of duty cycle and the deposition frequency, Surf. Coat. Technol., 2019, 374, p 345–354.10.1016/j.surfcoat.2019.06.025 ↗

14. E. Arslan and S.F. Demirtas, Optimization of PEO coating parameters for the enhancement of wear resistance of AA7075, Surf. Topogr. Metrol. Prop., 2025, 13, 025025.10.1088/2051-672X/ade1f0 ↗

15. M. Kaseem and B. Dikici, Optimization of surface properties of plasma electrolytic oxidation coating by organic additives: a review, Coatings, 2021, 11, p 374.10.3390/coatings11040374 ↗

16. F. Songur, E. Arslan, and B. Dikici, Taguchi optimization of PEO process parameters for corrosion protection of AA7075 alloy, Surf. Coat. Technol., 2022, 434, 128202.10.1016/j.surfcoat.2022.128202 ↗

17. A.L. Yerokhin, X. Nie, A. Leyland, A. Matthews, and S.J. Dowey, Plasma electrolysis for surface engineering, Surf. Coat. Technol., 1999, 122, p 73–93.10.1016/S0257-8972(99)00441-7 ↗

18. Z. Yao, Y. Liu, Y. Xu, Z. Jiang, and F. Wang, Effects of cathode pulse at high frequency on structure and composition of Al2TiO5 ceramic coatings on Ti alloy by plasma electrolytic oxidation, Mater. Chem. Phys., 2011, 125, p 258–263.

19. A. Saikiran, S. Hariprasad, S. Arun, L. Rama Krishna, and N. Rameshbabu, Effect of electrolyte composition on morphology and corrosion resistance of plasma electrolytic oxidation coatings on aluminized steel, Surf. Coat. Technol., 2019, 372, p 239–251.10.1016/j.surfcoat.2019.05.047 ↗

20. S. Ono, S. Moronuki, Y. Mori, A. Koshi, J. Liao, and H. Asoh, Effect of electrolyte concentration on the structure and corrosion resistance of anodic films formed on magnesium through plasma electrolytic oxidation, Electrochim. Acta, 2017, 240, p 415–423.10.1016/j.electacta.2017.04.110 ↗

21. S. Sikdar, P.V. Menezes, R. Maccione, T. Jacob, and P.L. Menezes, Plasma electrolytic oxidation (PEO) process—processing, properties, and applications, Nanomaterials, 2021, 11, 1375.10.3390/nano11061375 ↗

22. Z. Yao, Y. Jiang, F. Jia, Z. Jiang, and F. Wang, Growth characteristics of plasma electrolytic oxidation ceramic coatings on Ti–6Al–4V alloy, Appl. Surf. Sci., 2008, 254, p 4084–4091.10.1016/j.apsusc.2007.12.062 ↗

23. A.L. Yerokhin, X. Nie, A. Leyland, and A. Matthews, Characterisation of oxide films produced by plasma electrolytic oxidation of a Ti–6Al–4V alloy, Surf. Coat. Technol., 2000, 130, p 195–206.10.1016/S0257-8972(00)00719-2 ↗

24. M. Hashemzadeh, K. Raeissi, F. Ashrafizadeh, A. Hakimizad, and M. Santamaria, Incorporation mechanism of colloidal TiO2 nanoparticles and their effect on properties of coatings grown on 7075 Al alloy from silicate-based solution using plasma electrolytic oxidation, Trans. Nonferrous Met. Soc. China, 2021, 31, p 3659–3676.10.1016/S1003-6326(21)65755-2 ↗

25. P. Molaeipour, S.R. Allahkaram, and S. Akbarzadeh, Corrosion inhibition of Ti6Al4V alloy by a protective plasma electrolytic oxidation coating modified with boron carbide nanoparticles, Surf. Coat. Technol., 2022, 430, 127987.10.1016/j.surfcoat.2021.127987 ↗

26. T. Zehra, S.A. Patil, N.K. Shrestha, A. Fattah-alhosseini, and M. Kaseem, Anionic assisted incorporation of WO2 nanoparticles for enhanced electrochemical properties of AZ31 Mg alloy coated via plasma electrolytic oxidation, J. Alloys Compd., 2022, 916, 165445.10.1016/j.jallcom.2022.165445 ↗

27. R. Chaharmahali, A. Fattah-alhosseini, and K. Babaei, Surface characterization and corrosion behavior of calcium phosphate (Ca-P) base composite layer on Mg and its alloys using plasma electrolytic oxidation (PEO): a review, J. Magnes. Alloys, 2021, 9, p 21–40.10.1016/j.jma.2020.07.004 ↗

28. A. Lugovskoy and S. Lugovskoy, Production of hydroxyapatite layers on the plasma electrolytically oxidized surface of titanium alloys, Mater. Sci. Eng., C, 2014, 43, p 527–532.10.1016/j.msec.2014.07.030 ↗

29. D. Dzhurinskiy, Y. Gao, W.K. Yeung, E. Strumban, V. Leshchinsky, P.J. Chu, A. Matthews, A. Yerokhin and R.G. Maev, Characterization and corrosion evaluation of TiO2:n-HA coatings on titanium alloy formed by plasma electrolytic oxidation, Surf. Coat. Technol., 2015, 269, p 91–102.10.1016/j.surfcoat.2015.01.022 ↗

30. D. Wei, Y. Zhou, D. Jia, and Y. Wang, Chemical treatment of TiO2-based coatings formed by plasma electrolytic oxidation in electrolyte containing nano-HA, calcium salts and phosphates for biomedical applications, Appl. Surf. Sci., 2008, 254, p 1775–1782.10.1016/j.apsusc.2007.07.144 ↗

31. O. Yigit, B. Dikici, N. Ozdemir, and E. Arslan, Plasma electrolytic oxidation of Ti-6Al-4V alloys in nHA/GNS containing electrolytes for biomedical applications: the combined effect of the deposition frequency and GNS weight percentage, Surf. Coat. Technol., 2021, 415, 127139.10.1016/j.surfcoat.2021.127139 ↗

32. L. Casanova, M. La Padula, M.P. Pedeferri, M.V. Diamanti, and M. Ormellese, An insight into the evolution of corrosion resistant coatings on titanium during bipolar plasma electrolytic oxidation in sulfuric acid, Electrochim. Acta, 2021, 379, 138190.10.1016/j.electacta.2021.138190 ↗

33. F. Jaspard-Mécuson, T. Czerwiec, G. Henrion, T. Belmonte, L. Dujardin, A. Viola, and J. Beauvir, Tailored aluminium oxide layers by bipolar current adjustment in the plasma electrolytic oxidation (PEO) process, Surf. Coat. Technol., 2007, 201, p 8677–8682.10.1016/j.surfcoat.2006.09.005 ↗

34. H. Khanmohammadi, S.R. Allahkaram, A. Igual Munoz, and N. Towhidi, The influence of current density and frequency on the microstructure and corrosion behavior of plasma electrolytic oxidation coatings on Ti6Al4V, J. Mater. Eng. Perform., 2017, 26, p 931–944.10.1007/s11665-017-2503-3 ↗

35. J.H. Lee, S.J. Lee, and S.J. Kim, Influence of applied frequency on microstructural and electrochemical characteristics of ceramic coating produced on Al-Mg alloy by pulsed plasma electrolytic oxidation, Acta Phys. Pol. A, 2016, 129, p 753–758.10.12693/APhysPolA.129.753 ↗

36. P.B. Srinivasan, J. Liang, R.G. Balajeee, C. Blawert, M. Störmer, and W. Dietzel, Effect of pulse frequency on the microstructure, phase composition and corrosion performance of a phosphate-based plasma electrolytic oxidation coated AM50 magnesium alloy, Appl. Surf. Sci., 2010, 256, p 3928–3935.10.1016/j.apsusc.2010.01.052 ↗

37. X. Zhang, Y. Zhang, L. Chang, Z. Jiang, Z. Yao, and X. Liu, Effects of frequency on growth process of plasma electrolytic oxidation coating, Mater. Chem. Phys., 2012, 133, p 747–752.

38. P. Su, X. Wu, Z. Jiang, and Y. Guo, Effects of working frequency on the structure and corrosion resistance of plasma electrolytic oxidation coatings formed on a ZK60 Mg alloy, Int. J. Appl. Ceram. Technol., 2011, 8, p 112–119.10.1111/j.1744-7402.2009.02411.x ↗

39. M. Babaei, C. Dehghanian, and M. Vanaki, Effect of additive on electrochemical corrosion properties of plasma electrolytic oxidation coatings formed on CP Ti under different processing frequency, Appl. Surf. Sci., 2016, 363, p 50–60.10.1016/j.apsusc.2015.12.019 ↗

40. C. Garcia-Cabezón, M.L. Rodríguez-Méndez, V.A. Borrás, R. Bayón, C. Salvo-Comino, C. Garcia-Hernandez, and F. Martin-Pedrosa, Improvements in tribological and anticorrosion performance of porous Ti-6Al-4V via PEO coating, Friction, 2021, 9, p 1303–1318.10.1007/s40544-020-0480-2 ↗

41. A. Keyvani, M. Zamani, M. Bahamirian, E. Nikoomanzari, A. Fattah-alhosseini, and H. Sina, Role of incorporation of ZnO nanoparticles on corrosion behavior of ceramic coatings developed on AZ31 magnesium alloy by plasma electrolytic oxidation technique, Surf. Interfaces, 2021, 22, 100728.10.1016/j.surfin.2020.100728 ↗

42. M. Vakili-Azghandi, and A. Fattah-alhosseini, Effects of duty cycle, current frequency, and current density on corrosion behavior of the plasma electrolytic oxidation coatings on 6061 Al alloy in artificial seawater, Metall. Mater. Trans. A, 2017, 48, p 4681–4692.10.1007/s11661-017-4205-8 ↗

43. V. Jafarniya Kharanagh, M.A. Faghihi Sani, and E. Rafizadeh, Effect of current frequency on coating properties formed on aluminised steel by plasma electrolytic oxidation, Surf. Eng., 2014, 30, p 224–228.10.1179/1743294413Y.0000000190 ↗

44. L. Chitsaz-Khoyi, J. Khalil-Allafi, A. Motallebzadeh, and M. Etminanfar, The Effect of Hydroxyapatite Nanoparticles on Electrochemical and Mechanical Performance of TiC/N Coating Fabricated by Plasma Electrolytic Saturation Method, Surf. Coat. Technol., 2020, 394, 125817.10.1016/j.surfcoat.2020.125817 ↗