Optimization of electrochemical step deposition for bioceramic hydroxyapatite coatings on CoCrMo implants

İbrahim Coşkun M., KARAHAN İ. H., YÜCEL Y., Golden T. D.

Surface and Coatings Technology, cilt.301, ss.42-53, 2016 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 301
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.surfcoat.2015.12.076
  • Dergi Adı: Surface and Coatings Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.42-53
  • Anahtar Kelimeler: Bioceramic, Central Composite Design, CoCrMo, Electrodeposition, Hydroxyapatite, Response Surface Methodology
  • Hatay Mustafa Kemal Üniversitesi Adresli: Evet

Özet

CoCrMo metallic implants were coated with a bioceramic hydroxyapatite layer using a modified step electro-deposition at room temperature. Response Surface Methodology (RSM) and Central Composite Design (CCD) were used to model and optimize the step deposition parameters, such as initial potential, scan rate and peak potential. Interactions between step deposition parameters and in vitro corrosion performance of the coatings were modeled by response surface plots. Predicted and experimental values were fitted with high accuracy. The effects of the step deposition parameters were evaluated within the limits of lowest applied potential (− 0.03 to − 1.17 V), scan rate (3.43–116.57 mV/s) and highest applied deposition potential (− 1.08 to − 1.92 V). A 5-level-3-factor experiment plan was used to optimize step deposition parameters. Optimum conditions for the modified step deposition parameters were determined as initial potential of − 0.76 V, peak potential of − 1.67 V and scan rate of 59.33 mV/s.