Corrosion Resistance Study of Electrophoretic Deposited Hydroxyapatite on Stainless Steel for Implant Applications

Chew KK, Zein SHS, Ahmad AL, McPhail DS, Boccaccini AR (2012)


Publication Type: Journal article

Publication year: 2012

Journal

Publisher: Trans Tech Publications

Book Volume: 507

Pages Range: 141-146

DOI: 10.4028/www.scientific.net/KEM.507.141

Abstract

Stainless steel (SS) is often used for orthopaedic and dental implants because of its excellent mechanical characteristics. However, from an electrochemical perspective, SS can be susceptible to corrosion-related problems. Inorganic bioactive coatings on SS surfaces are reported to impart corrosion resistance and enhance biocompatibility. In this paper, hydroxyapatite (HA) coatings were developed on SS 316L by an electrophoretic deposition (EPD) technique at applied deposition voltages from 10 to 60 V in an acidic aqueous solution. The present study was performed to optimise the applied voltage required to produce stable HA coatings on SS 316L. Their corrosion resistance in simulated body conditions were investigated using the potentiodynamic polarization curves. The results of the electrochemical studies revealed that the optimal applied voltage for EPD of HA on SS 316L was 40 V. The polarisation parameters, such as the corrosion potential, breakdown potential and repassivation potential of HA coated materials demonstrated nobler behaviours than the uncoated SS 316L. These results validated the successful formation of stable and protective HA coatings on SS 316L. © (2012) Trans Tech Publications, Switzerland.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Chew, K.-K., Zein, S.H.S., Ahmad, A.L., McPhail, D.S., & Boccaccini, A.R. (2012). Corrosion Resistance Study of Electrophoretic Deposited Hydroxyapatite on Stainless Steel for Implant Applications. Key Engineering Materials, 507, 141-146. https://doi.org/10.4028/www.scientific.net/KEM.507.141

MLA:

Chew, Kean-Khoon, et al. "Corrosion Resistance Study of Electrophoretic Deposited Hydroxyapatite on Stainless Steel for Implant Applications." Key Engineering Materials 507 (2012): 141-146.

BibTeX: Download