Corrosion behaviour of plasma sprayed HA-TiO2 coatings on Ti6Al4V substrate

Yusuf KAYALI1, Muhammet KARABAŞ2, Şükrü TALAŞ


This study was performed to investigate the corrosion behaviour of plasma sprayed Hydroxyapatite (HA) and HA-TiO2 double layer coatings on Ti4Al6V substrates. The coatings were characterized by X-ray diffraction (XRD) and Scanning electron microscopy (SEM) attached with Energy-Dispersive X-Ray Spectroscopy (EDX). Tafel and Potentiodynamic techniques were used to assess the in-vitro corrosion behaviour of two coatings and un-coated Ti4Al6V substrate. HA coated Ti6Al4V samples showed a good corrosion resistance however uncoated Ti6Al4V, TiO2 and HAP on TiO2 coatings produced comparatively low corosion resistances.


HVOF; Ti6Al4V; Hydroxyapatite; TiO2 coating

Full Text:



Hip and Knee Orthopedic Surgical Implants Market Shares, Strategies, and Forecasts, Worldwide, 2016 to 2022. WinterGreen Research ,, Accessed 24 April 2018, 2016.

Temenoff JS, Mikos AG. Biomaterials : the intersection of biology and materials science. 2008: Upper Saddle River.

Li YH, et al. New Developments of Ti-Based Alloys for Biomedical Applications. Materials 2014; 7(3): 1709-1800.

Fathi MH, Doostmohammadi A. Bioactive glass nanopowder and bioglass coating for biocompatibility improvement of metallic implant. Journal of Materials Processing Technology 2009; 209(3): 1385-1391.

Heimann RB. Plasma-Sprayed Hydroxylapatite Based Coatings: Chemical, Mechanical, Microstructural, and Biomedical Properties. Journal of Thermal Spray Technology 2016; 25(5): 827-850.

Baptista R, et al. Characterization of titanium-hydroxyapatite biocomposites processed by dip coating. Bulletin of Materials Science 2016; 39(1): 263-272.

Farnoush H, Rezaei Z. Effect of suspension stability on bonding strength and electrochemical behavior of electrophoretically deposited HA–YSZ nanostructured composite coatings. Ceramics International 2017;

Cannillo V, Lusvarghi L, Sola A. Production and characterization of plasma-sprayed TiO2-hydroxyapatite functionally graded coatings. Journal of the European Ceramic Society 2008; 28(11): 2161-2169.

Lu, YP, et al. Plasma-sprayed hydroxyapatite plus titania composite bond coat for hydroxyapatite coating on titanium substrate. Biomaterials 2004; 25(18): 4393-4403.

Khor KA, Li H, Cheang P. Processing-microstructure-property relations in HVOF sprayed calcium phosphate based bioceramic coatings. Biomaterials 2003; 24(13): 2233-2243.

Gaona M, Lima RS, Marple BR. Nanostructured titania/hydroxyapatite composite coatings deposited by high velocity oxy-fuel (HVOF) spraying. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 2007; 458(1-2): 141-149.

Kulpetchdara K, et al. Influence of the nano hydroxyapatite powder on thermally sprayed HA coatings onto stainless steel. Surface & Coatings Technology 2016; 306: 181-186.

Noorakma ACW, et al. Hydroxyapatite-Coated Magnesium-Based Biodegradable Alloy: Cold Spray Deposition and Simulated Body Fluid Studies. Journal of Materials Engineering and Performance 2013; 22(10): 2997-3004.

Vilardell AM, et al. Cold spray as an emerging technology for biocompatible and antibacterial coatings: state of art. Journal of Materials Science 2015; 50(13): 4441-4462.

Li H, Khor KA, Cheang P. Titanium dioxide reinforced hydroxyapatite coatings deposited by high velocity oxy-fuel (HVOF) spray. Biomaterials 2002; 23(1): 85-91.

Karimi S, et al. Study of wear and corrosion behavior of cathodic plasma electrolytic deposition of zirconia-hydroxyapatite on titanium and 316L stainless steel in Ringer's solution. International Journal of Materials Research 2015; 106(6): 614-620.

Mittal M, Nath SK, Prakash S. Improvement in mechanical properties of plasma sprayed hydroxyapatite coatings by Al2O3 reinforcement. Materials Science & Engineering C-Materials for Biological Applications 2013; 33(5): 2838-2845.

Palanivelu R, Kumar AR. Scratch and wear behaviour of plasma sprayed nano ceramics bilayer Al2O3-13 wt%TiO2/hydroxyapatite coated on medical grade titanium substrates in SBF environment. Applied Surface Science 2014; 315: 372-379.

Sola A, Bellucci D, Cannillo V. Functionally graded materials for orthopedic applications - an update on design and manufacturing. Biotechnology Advances 2016; 34(5): 504-531.

Kayali Y, Aslan O, Karabaş M, et al. Corrosion Behaviour of Single and Double Layer Hydroxyapatite Coatings on 316L Stainless Steel by Plasma Spray. Protection of Metals and Physical Chemistry of Surfaces 2016; 52(6): 1109-1115.

Mohseni E, Zalnezhad E, Bushro AR. Comparative investigation on the adhesion of hydroxyapatite coating on Ti–6Al–4V implant: A review paper. International Journal of Adhesion&Adhesives 2014; 48: 238–257

Vargas F, Ageorges H, Fauchais P, et al. Permeation of saline solution in Al2O3-13 wt.% TiO2 coatings elaborated by atmospheric plasma spraying. Surface & [23] Shuai C, Shaokang G, Bin C, et al. Corrosion behavior of TiO2 films on Mg–Znalloy in simulated body fluid. Applied Surface Science 2011; 257: 4464–4467.

Gurpreet S, Hazoor S, Buta SS. Characterization and corrosion resistance of plasma sprayed HA and HA–SiO2 coatings on Ti–6Al–4V. Surface&Coatings Technology 2013; 228: 242–247.

Pramanik S, Agarwaly AK and Rai KN. Trends biomaterials, Artificial Organs 2005; 19 (1): 46-51

Evcin A, Kepekçi DB, Barut İ. Hidroksiapatit Tozlarının Plazma Sprey Yöntemiyle Paslanmaz Çelik Üzerine Kaplanması, 5. Uluslararası İleri Teknolojiler Sempozyumu 2009: Karabük ,Turkey.

Forghani SM, Ghazali MJ, Muchtar A, et al. Mechanical properties of plasma sprayed nanostructured TiO2 coatings on mild steel. Ceramics International 2014; 40: 7049-7056.

Morks MF, Fahim NF, Kobayashi A. Structure, mechanical performance and electrochemical characterization of plasma sprayed SiO2/Ti-reinforced hydroxyapatite biomedical coatings. Applied Surface Science 2008. 255: 3426–3433



  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License

This site is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.