Galvanic Deposition of Hydroxyapatite/chitosan/collagen Coatings on 304 Stainless Steel
Zanca, Claudio
Cordaro, Germana
Capuana, Elisa
Brucato, Valerio
Carfi Pavia, Francesco
La Carrubba, Vincenzo
Ghersi, Giulio
Inguanta, Rosalinda

How to Cite

Zanca C., Cordaro G., Capuana E., Brucato V., Carfi Pavia F., La Carrubba V., Ghersi G., Inguanta R., 2021, Galvanic Deposition of Hydroxyapatite/chitosan/collagen Coatings on 304 Stainless Steel, Chemical Engineering Transactions, 86, 1399-1404.


The galvanic deposition method was used to deposit Hydroxyapatite/Chitosan/Collagen coatings on 304 stainless steel. Galvanic deposition is an alternative and valid way to fabricate bio-coatings with high biocompatibility and good anticorrosion properties. Physical-chemical characterizations were carried out to investigate chemical composition and morphology of the samples. Coatings consist of a mixture of calcium phosphate (Brushite and Hydroxyapatite) with chitosan and collagen. Corrosion tests were performed in the simulated body fluid (SBF) after different aging times. Results show that, in comparison with bare 304 stainless steel, coating shifts corrosion potential to anodic values and reduces corrosion current density. Nevertheless, the aging in SBF led to a completely conversion of brushite into hydroxyapatite. The release of metal ions, measured after 21 days of aging in SBF solution, is very low due to the presence of coating that slow-down the corrosion rate of steel.