title: Investigation of duty cycle effect on corrosion properties of electrodeposited calcium phosphate coatings.
abstract: The bioceramic calcium phosphate (CaP) is frequently used for improving bone fixation in titanium medical implants and thus increasing lifetime of the implant. It is known that the application of CaP coatings on metallic implant devices offers the possibility of combining the strength of the metals and the bioactivity of the ceramic materials. Many different techniques are available for producing CaP coatings. Electrochemical deposition method is widely used because of its ease of operation parameters, low temperature requirement, reproducibility and suitability for coating complex structures. This technique allows obtaining CaP coatings which promote bone in growth during the first healing period leading to permanent fixation. Electrochemical pulse technique is an alternative to calcium phosphate deposition techniques usually employed to cover orthopedic or dental titanium implant surfaces. Additionally, pulse electrodeposition technique can produce more uniform and denser CaP coatings on metallic implants. In this study, CaP based coatings were produced by electrochemical pulse technique on Ti6Al4V substrates. The resulting CaP deposits were investigated by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Corrosion properties of the CaP coatings were also investigated. The results showed that various duty cycle ranges have remarkably effect on morphology, crystallinity and corrosion properties of the produced CaP coatings.
authors: Dokuz Eylul University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Buca, 35390 Izmir, Turkey. Electronic address: funda.ak@deu.edu.tr.
authors: Funda Ak
authors: FA
authors: Azem
authors: Dokuz Eylul University, The Graduate School of Natural and Applied Sciences, Buca, 35390 Izmir, Turkey. Electronic address: tulaykocdelice@gmail.com.
authors: Tulay Koc
authors: TK
authors: Delice
authors: Es Group, Izmir, Turkey. Electronic address: gulerungan@hotmail.com.
authors: Guler
authors: G
authors: Ungan
authors: Dokuz Eylul University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Buca, 35390 Izmir, Turkey. Electronic address: ahmet.cakir@deu.edu.tr.
authors: Ahmet
authors: A
authors: Cakir
mesh_terms: D000497:Alloys; D002130:Calcium Phosphates / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003343:Corrosion; D020007:Implants, Experimental; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C031462:titanium alloy (TiAl6V4); C020243:calcium phosphate; D014025:Titanium
keywords: Biomaterials; CaP coatings; Corrosion; Duty cycle; Ti alloy