The properties of hydroxyapatite ceramic coatings produced by plasma electrolytic oxidation
Source abstract
Abstract
Abstract Calcium phosphate coatings produced on the surface of Ti6Al4V by plasma electrolytic oxidation (PEO) using different concentrations of hydroxyapatite (HA) in a 0.12 M Na3PO4 (NAP) electrolyte solution was investigated. It was found that the amount of calcium phosphate particles infiltrated into the coating layer as well as the thickness and the surface roughness of the coating increased with increasing HA concentration. The porosity of the ceramic coatings indicated an inverse relationship with the concentration of HA particles dispersed in the NAP solution. The result also demonstrates that higher scratch adhesive strength was achieved using 1.5 g/L HA solution, producing a critical load of 2099 mN, while 0 g/L HA only produced a critical load of 1247 mN. The adhesion becomes independent of thickness when the concentration of HA exceeds 1.5 g/L. The failure of the coating was characterized by large periodic hemispherical chipping, while intermittent delamination was noticed with the coating embedded with HA particles. This study demonstrate the viability of using PEO to produce a thin layer of HA ceramic coating on Ti6Al4V suitable for biomedical applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Bone Tissue Engineering Materials · Magnesium Alloys: Properties and Applications · Titanium Alloys Microstructure and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. MAO-preparation of nanocrystalline hydroxyapatite-titania composite films: formation stages and effect of the growth time10.1016/j.materresbull.2011.08.049 ↗
2. The entrance mechanism of calcium and phosphorus elements into micro arc oxidation coatings developed on Ti6Al4V alloy10.1016/j.surfcoat.2015.11.041 ↗
3. Bioactive coatings on Ti6Al4V alloy formed by plasma electrolytic oxidation10.1016/j.surfcoat.2015.07.053 ↗
4. Preparation and characterization of sol-gel hydroxyapatite and its electrochemical evaluation for biomedical applications10.1002/jbm.a.31773 ↗
5. Influence of processing parameters in the plasma spraying of hydroxyapatite/Ti6Al4V composite coatings10.1016/S0924-0136(99)00062-X ↗
6. Effect of suspension medium on the electrophoretic deposition of hydroxyapatite nanoparticles and properties of obtained coatings10.1016/j.ceramint.2013.10.004 ↗
7. Improved bio-physical performance of hydroxyapatite coatings obtained by electrophoretic deposition at dynamic voltage10.1016/j.ceramint.2014.04.116 ↗
8. Preparation, scratch adhesion and anti-corrosion performance of TiO2-MgO-BHA coating on Ti6Al4V implant by plasma electrolytic oxidation technique
9. Hydroxyapaptite layer formation on titanium alloys surface using micro-arc oxidation
10. Fabrication, characterization and in-vitro evaluation of nanostructured zirconia/hydroxyapatite composite film on zirconium10.1016/j.surfcoat.2013.10.039 ↗
11. Effect of electrochemical parameters on the formation of anodic films on commercially pure titanium by plasma electrolytic oxidation10.1016/j.surfcoat.2014.06.058 ↗
12. Crystallization of hydroxyapatite during hydrothermal treatment on amorphous calcium phosphate layer coated by PEO technique10.1016/j.ceramint.2012.08.026 ↗
13. Bioactivity of coatings formed on Ti-13Nb-13Zr alloy using plasma electrolytic oxidation10.1016/j.msec.2014.12.073 ↗
14. A simple method to functionalize the surface of plasma electrolytic oxidation produced TiO2 coatings for growing hydroxyapatite10.1016/j.electacta.2016.02.060 ↗
15. A theory of avalanche breakdown during anodic oxidation10.1016/0013-4686(87)85032-6 ↗
16. Effects of sodium tungstate on characteristics of microarc oxidation coatings formed on magnesium alloy in silicate-KOH electrolyte10.1016/S1003-6326(07)60079-X ↗
17. Adjustment of the ratio of Ca/P in the ceramic coating on Mg alloy by plasma electrolytic oxidation10.1016/j.apsusc.2009.02.082 ↗
18. Plasma electrolytic oxidation (PEO) for production of anodised coatings on lightweight metal (Al, Mg, Ti) alloys10.1179/174591908X372482 ↗
19. Characterization and formation of hydroxyapatite on Ti6Al4V coated by plasma electrolytic oxidation10.1016/j.jallcom.2012.11.024 ↗
20. Micro arc oxidized HAp-TiO2 nanostructured hybrid layers-part I: effect of voltage and growth time10.1016/j.apsusc.2011.01.057 ↗
21. In situ composite coating of titania-hydroxyapatite on titanium substrate by micro-arc oxidation coupled with electrophoretic deposition processing10.1016/j.mseb.2011.06.019 ↗
22. Modification of a Ti-Mo alloy surface via plasma electrolytic oxidation in a solution containing calcium and phosphorus10.1016/j.electacta.2013.02.102 ↗
23. Influence of anodization on the adhesion of calcium phosphate coatings on titanium substrates10.1002/jbm.a.32652 ↗
24. An overview of the potential of quantitative coating adhesion measurement by scratch testing10.1016/S0167-8922(06)80043-X ↗
25. Optimized scratch adhesion for TiSiN coatings deposited by a combination of DC and RF sputtering10.1016/j.surfcoat.2011.07.048 ↗
26. Electrochemical cathodic deposition of hydroxyapatite: improvements in adhesion and crystallinity10.1016/j.msec.2008.10.015 ↗
27. Structural and mechanical characterization of Al/Al2O3 nanotube thin film on TiV alloy10.1016/j.apsusc.2014.10.040 ↗
28. ASTM International, Standard Test Method for Scratch Hardness of Materials Using a Diamond Stylus, Designation, G171-03, 2009, pp. 1–7. 〈http://www.astm.org〉.
29. Bunshah · 2001
30. Experiences from scratch testing of tribological PVD10.1016/S0301-679X(97)00014-5 ↗