Effect of hydroxyapatite/alumina composite coatings using HVOF on immersion behavior of NiTi alloys

Hydroxyapatite (HA) coatings have been widely used to improve biocompatibility of metal alloys. This paper discusses the effect of hydroxyapatite (HA) and HA/alumina coated NiTi on their corrosion and dissolution behavior in Phosphate Buffer Saline (PBS) and Ringer’s lactate solutions. The HA was synthesized from biogenic method and used as initial powder in High-Velocity Oxygen Fuel (HVOF) spray technique for the deposition of two coating types, fully HA and HA + 15 wt.% alumina composite coating. The as-synthesized HA had irregular porous structure with relatively low Ca/P ratio of 1.52. Tafel polarization curves obtained from electrochemical test had showed that both coatings increased the corrosion resistance of the NiTi substrates significantly. The ICP-MS analysis results that indicated a low nickel dissolved in both solutions after immersion in 21 days had supported these findings. The nickel levels in the solutions from all samples, either bared substrate or coated samples, in fact below the maximum limit for allergies of the human body. Immersion testing showed the stability of HA and HA/alumina layers as a barrier which maintains its morphology in PBS solution but slightly changed in Ringers.

[1]  F. Walsh,et al.  Enhanced corrosion protection of NiTi orthopedic implants by highly crystalline hydroxyapatite deposited by spin coating: The importance of pre-treatment , 2021 .

[2]  Muhammad Akmal,et al.  Improved in vitro bioactivity and electrochemical behavior of hydroxyapatite-coated NiTi shape memory alloy , 2019, Journal of Materials Science.

[3]  M. A. F. Zaludin,et al.  Corrosion analysis of hydroxyapatite coated magnesium in simulated body fluid (SBF), phosphate buffered saline (PBS), and Ringer's solution , 2019, Materials Today: Proceedings.

[4]  J. Alvarado-Orozco,et al.  HVOF Hydroxyapatite/Titania-Graded Coatings: Microstructural, Mechanical, and In Vitro Characterization , 2018, Journal of Thermal Spray Technology.

[5]  J. Matejicek,et al.  Medicine Meets Thermal Spray Technology: A Review of Patents , 2018, Journal of Thermal Spray Technology.

[6]  I. Hulka,et al.  Microstructure and Wear Behaviour of Ti Reinforced HVOF Coating , 2018, IOP Conference Series: Materials Science and Engineering.

[7]  M. A. F. Zaludin,et al.  Electrochemical Impedance Spectroscopy (EIS) Evaluation of Hydroxyapatite-Coated Magnesium in Different Corrosion Media , 2018, Solid State Phenomena.

[8]  M. Rajkumar,et al.  Synthesis and characterization of hydroxyapatite/alumina ceramic nanocomposites for biomedical applications , 2018, Bulletin of Materials Science.

[9]  P. T. Dalla,et al.  Ni-Ti Shape Memory Alloy Coatings for Structural Applications: Optimization of HVOF Spraying Parameters , 2018, Advances in Materials Science and Engineering.

[10]  J. Scutti,et al.  The effect of Nitinol on medical device innovation , 2018 .

[11]  A. Adeogun,et al.  Synthesis of organic derived hydroxyapatite scaffold from pig bone waste for tissue engineering applications , 2018 .

[12]  M. Etminanfar,et al.  Corrosion resistance and in vitro evaluation of the pulsed current electrodeposited hydroxyapatite coatings on Nitinol shape memory alloy , 2017 .

[13]  A. Wadood.  Brief Overview on Nitinol as Biomaterial , 2016 .

[14]  S. Aich,et al.  Characterisation and properties of magnetron sputtered nanoscale bi‐layered Ni/Ti thin films and effect of annealing , 2015 .

[15]  C. Marino,et al.  The Electrochemical Behavior of the NiTi Alloy in Different Simulated Body Fluids , 2015 .

[16]  M. Khorasani,et al.  Synthesis Methods for Nanosized Hydroxyapatite with Diverse Structures , 2014 .

[17]  B. Prawara,et al.  Development of HVOF Coating of Hydroxy Apatite on Titanium Alloy with Carbon Nano Tube Intermediate Layer , 2014 .

[18]  M. Mittal,et al.  Improvement in mechanical properties of plasma sprayed hydroxyapatite coatings by Al2O3 reinforcement. , 2013, Materials science & engineering. C, Materials for biological applications.

[19]  W. Haider,et al.  Cytotoxicity of Metal Ions Released from Nitinol Alloys on Endothelial Cells , 2011, Journal of Materials Engineering and Performance.

[20]  S. R. Biaggio,et al.  Preparation and characterization of biomimetically and electrochemically deposited hydroxyapatite coatings on micro-arc oxidized Ti–13Nb–13Zr , 2011, Journal of materials science. Materials in medicine.

[21]  J. Stokes,et al.  Design of Experiment Analysis of the Sulzer Metco DJ High Velocity Oxy-Fuel Coating of Hydroxyapatite for Orthopedic Applications , 2010, International Thermal Spray Conference.

[22]  Z. Kowalski,et al.  Evaluation of the biomedical properties of hydroxyapatite obtained from bone waste , 2009 .

[23]  I. Milošev,et al.  Metal ion release and surface composition of the Cu-18Ni-20Zn nickel-silver during 30 days immersion in artificial sweat , 2007 .

[24]  J. M. Guilemany,et al.  Effect of Heat Treatments on HVOF Hydroxyapatite Coatings , 2007 .

[25]  K. Khor,et al.  Effects of Yttria‐Stabilized Zirconia on Plasma‐Sprayed Hydroxyapatite/Yttria‐Stabilized Zirconia Composite Coatings , 2004 .

[26]  Yuhua Yan,et al.  Thermal Stability of Hydroxyapatite Whiskers Prepared by Homogenous Precipitation , 2002 .

[27]  Hyoun‐Ee Kim,et al.  Effect of calcinations of starting powder on mechanical properties of hydroxyapatite–alumina bioceramic composite , 2002, Journal of materials science. Materials in medicine.

[28]  D. Mantovani,et al.  Shape Memory Materials for Biomedical Applications , 2002 .

[29]  K. Khor,et al.  Titanium dioxide reinforced hydroxyapatite coatings deposited by high velocity oxy-fuel (HVOF) spray. , 2002, Biomaterials.

[30]  K A Gross,et al.  Material fundamentals and clinical performance of plasma-sprayed hydroxyapatite coatings: a review. , 2001, Journal of biomedical materials research.

[31]  E. Landi,et al.  Densification behaviour and mechanisms of synthetic hydroxyapatites , 2000 .

[32]  K A Gross,et al.  Thermal processing of hydroxyapatite for coating production. , 1998, Journal of biomedical materials research.

[33]  P. Ducheyne,et al.  Plasma spraying induced changes of calcium phosphate ceramic characteristics and the effect onin vitro stability , 1992 .