Electrochemical Deposition of Calcium Phosphate-Based Coatings onto Porous Ti using Organic Phosphorus Sources
Abstract
The study and commercialization of calcium phosphate (Ca-P) coatings has occurred for several decades. However, this has typically involved the use of hydroxyapatite. This thesis presents the synthesis of different Ca-P-based coatings that has not been studied. Anodic oxidation was employed to create a porous Ti substrate, while pulsed electrochemical deposition was used to deposit the coating onto the Ti. The first coating synthesized was a calcium phosphoserine (Ca-pSer) complex, which contained two different morphologies: a flower-like structure at low deposition time and a unique cubic morphology at higher deposition times. Next, an amorphous calcium phosphate coating was synthesized and stabilized using ATP. A biocompatibility test revealed that the ACP coating had high cell proliferation. Lastly, differing concentrations of zinc was introduced to the Ca-pSer system. Microspheres were formed at 5 mol% Zn, whereas using 10 mol% Zn, it is suspected that Zn replaces Ca in the Ca-pSer complex.