Abstract
Ti and its alloys, which are commonly used in biomedical applications, are often preferred due to their proximity to the mechanical properties of bone. In order to increase the biocompatibility and bioactivities of these materials, biomaterials based on ceramic are used in coating operations. In this study, by using an electrophoretic deposition method, instead of on the Ti6Al4V alloy which is commonly used in the literature, a hydroxyapatite (HA) coating operation was applied on the surface of the Ti6Al7Nb alloy, and the surface properties of the coatings were examined. Ti6Al7Nb is a new-generation implant on which there have not been many studies. The voltage values which were used in the coating operation were 50, 100, 150 and 200 V, and the time parameter was stabilized at 1 min. In our method, when preparing the solution, HA, ethanol, and polyvinyl alcohol (PVA) were used. At the end of the study, by using an electron microscope (SEM) the microstructures of the coatings were examined; elemental analyses (EDS) of the coating surfaces were performed; and by using an X-radiation diffraction (XRD) method, the phases which the coatings contained and the concentration of these phases were determined, and the coating thickness, roughness, and hardness values were also determined. Also, by conducting a Scratch test, the strength of the surface combination was examined. At the end of the study, in each parameter, a successful HA coating was seen. By comparing parameters with each other, the ideal voltage value in this coating was determined. It was determined that the most suitable coating was obtained at 100 V voltage and 1 min deposition time.
Highlights
Biomaterials are materials which are used to fulfill the functions of organs and tissues in the human body
The Ti6Al7Nb and Ti6AL4V alloys are commonly used in synthetic hip and tooth implants due to their mechanical, chemical, and biological properties [5]
Ti6Al7Nb, which we used as the base material, is a new-generation implant material that was developed by the replacement of the controversial vanadium element in
Summary
Biomaterials are materials which are used to fulfill the functions of organs and tissues in the human body. Hydroxyapatite is not used a structural material directly to itstolow properties It is used by being applied on a on metallic implant material [12]. In order to coat metallic implants with electrochemical precipitation, precipitation, calcium phosphate material, some methods like immersion coating, electrochemical. Among the electrophoretic deposition method is a method which creates a coating of the bioceramic dust particles on the implant material by way of the electric field effect in the the suspension suspension [17,18]. One of highlights of of this thismethod methodisisthat thatititisischeaper cheaperthan than other methods like plasma spraying [19,20] It is easy apply,making makingititvery verypopular popularininindustry industry[15]. The factors factors which which affect affect the addition, it is easy toto apply, operations viavia the the EPDEPD method are the period,period, the applied voltage, coating quality qualityinincoating coating operations method aredeposition the deposition the applied and the suspension concentration [21]
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