Hydroxyapatite Coating Improved Corrosion Resistance of 316L Stainless Steel Used For Surgical Implants Applications
| Autor: | sami Abualnoun Ajeel, Nabeel Alawi kadhim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Engineering and Technology Journal, Vol 26, Iss 8, Pp 958-970 (2008) |
| Druh dokumentu: | article |
| ISSN: | 1681-6900 2412-0758 |
| DOI: | 10.30684/etj.26.8.6 |
| Popis: | Incidences of failure of stainless steel implant devices reveal the occurrence ofsignificant localized corroding pitting and crevice corrosion. To reduce corrosion andachieve better biocompatibility, the alloy of stainless steel was coated by hydroxapatite(HAP) by electrphoretic depositing method.The study involves modified surface of 316L stainless steel by coating it withhydroxyapatite by electrophoretic deposition. The method was carried out in various timeintervals (from 1 to 5 minutes) at constant potential of 60 V. The electrochemical behaviorof 316L stainless steel (uncoated and HAP coated specimens) was studied in simulatedhuman body environment. Synthetic blood plasma was utilized for simulated body fluidconditions.The corrosion parameters obtained from open circuit potential and potentiadynamicpolarization for the specimens indicate nobler shift in the polarization parameters, OCPtime,corrosion potential (Err) and corrosion current density (Icorr), for all coated specimensin comparison with the uncoated specimen. The final corrosion results for the alloy indicatedthat the specimen coated for 3 minutes was found to be more noble and have optimumcorrosion properties compared with the other coated specimens. |
| Databáze: | Directory of Open Access Journals |
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