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Conference Paper: Electrochemical deposition of apatite/collagen composite coating on NiTi shape memory alloy and coating properties

TitleElectrochemical deposition of apatite/collagen composite coating on NiTi shape memory alloy and coating properties
Authors
KeywordsBiomaterial
Thin film
Electrodeposition
Issue Date2010
PublisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/epubs/proceedings/spring2004/index.html
Citation
The 2009 Materials Research Society (MRS) Fall Meeting, Boston, MA., 30 November-4 December 2009. in Materials Research Society Symposium Proceedings, 2010, v. 1239, p. 141-146 How to Cite?
AbstractIn this investigation, an apatite/collagen composite coating was formed at 37°C on a NiTi shape memory alloy (SMA) through electrochemical deposition using double-strength simulated body fluid (2SBF) which contained dissolved collagen. Surface characteristics, wettability and stability of the composite coating were subsequently studied. Scanning electron microscope (SEM) examination of the surface of composite coatings revealed that many collagen fibers were embedded in apatite with flake-like structure and apatite nanocrystals nucleated and grew on collagen fibrils. Energy dispersive X-ray (EDX) spectroscopy analysis showed that the Ca: P ratio of the composite coating was about 1.35, which is close to that of octocalcium phosphate. Transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) analysis were also conducted for the composite coating. Compared to bare NiTi SMA samples, the potentiodynamic polarization curves of NiTi SMA samples with the composite coating displayed lower corrosion current density, more positive corrosion and breakdown potential, suggesting that the composite coating was chemically stable and provided corrosion resistance for NiTi SMA. © 2010 Materials Research Society.
Persistent Identifierhttp://hdl.handle.net/10722/129802
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Ten_HK
dc.contributor.authorWang, Men_HK
dc.date.accessioned2010-12-23T08:42:19Z-
dc.date.available2010-12-23T08:42:19Z-
dc.date.issued2010en_HK
dc.identifier.citationThe 2009 Materials Research Society (MRS) Fall Meeting, Boston, MA., 30 November-4 December 2009. in Materials Research Society Symposium Proceedings, 2010, v. 1239, p. 141-146en_HK
dc.identifier.issn0272-9172en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129802-
dc.description.abstractIn this investigation, an apatite/collagen composite coating was formed at 37°C on a NiTi shape memory alloy (SMA) through electrochemical deposition using double-strength simulated body fluid (2SBF) which contained dissolved collagen. Surface characteristics, wettability and stability of the composite coating were subsequently studied. Scanning electron microscope (SEM) examination of the surface of composite coatings revealed that many collagen fibers were embedded in apatite with flake-like structure and apatite nanocrystals nucleated and grew on collagen fibrils. Energy dispersive X-ray (EDX) spectroscopy analysis showed that the Ca: P ratio of the composite coating was about 1.35, which is close to that of octocalcium phosphate. Transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) analysis were also conducted for the composite coating. Compared to bare NiTi SMA samples, the potentiodynamic polarization curves of NiTi SMA samples with the composite coating displayed lower corrosion current density, more positive corrosion and breakdown potential, suggesting that the composite coating was chemically stable and provided corrosion resistance for NiTi SMA. © 2010 Materials Research Society.en_HK
dc.languageengen_US
dc.publisherMaterials Research Society. The Journal's web site is located at http://www.mrs.org/publications/epubs/proceedings/spring2004/index.htmlen_HK
dc.relation.ispartofMaterials Research Society Symposium Proceedingsen_HK
dc.rightsMRS Proceedings. Copyright © Materials Research Society.-
dc.subjectBiomaterial-
dc.subjectThin film-
dc.subjectElectrodeposition-
dc.titleElectrochemical deposition of apatite/collagen composite coating on NiTi shape memory alloy and coating propertiesen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailWang, M:memwang@hku.hken_HK
dc.identifier.authorityWang, M=rp00185en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1557/PROC-1239-VV02-07-
dc.identifier.scopuseid_2-s2.0-77956111851en_HK
dc.identifier.hkuros177739en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956111851&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume1239en_HK
dc.identifier.spage141en_HK
dc.identifier.epage146en_HK
dc.publisher.placeUnited Statesen_HK
dc.description.otherThe 2009 Materials Research Society (MRS) Fall Meeting, Boston, MA., 30 November-4 December 2009. in Materials Research Society Symposium Proceedings, 2010, v. 1239, p. 141-146-
dc.identifier.scopusauthoridSun, T=7402922748en_HK
dc.identifier.scopusauthoridWang, M=15749714100en_HK

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