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Article: Mechanical performance of apatite/TiO2 composite coatings formed on Ti and NiTi shape memory alloy

TitleMechanical performance of apatite/TiO2 composite coatings formed on Ti and NiTi shape memory alloy
Authors
KeywordsApatite
Composite coating
Friction
Nanoindentation
NiTi
Scratch
Ti
TiO2
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsusc
Citation
Applied Surface Science, 2008, v. 255 n. 2, p. 404-408 How to Cite?
AbstractTo make metals bioactive for orthopaedic applications, apatite/TiO2 composite coatings were formed on Ti and NiTi shape memory alloy (SMA) using a H2O2-oxidation and hot water aging technique and the subsequent accelerated biomimetic process. In the current investigation, nanoindentation, scratch testing and frictional testing were employed to assess mechanical properties and the adhesion of apatite/TiO2 composite coatings formed on Ti and NiTi SMA. Nanoindentation testing conducted on cross-sections of composite coatings indicated that there was no significant difference in nanohardness and elastic modulus between apatite/TiO2 composite coatings formed on Ti and NiTi SMA samples. The enhancement of the adhesion between the apatite layer and the metal substrates arose from the TiO2 intermediate layer in the composite coating. The highest values of coating adhesion strength for Ti and NiTi SMA samples, as measured by scratch tests, were 22.58 N and 19.07 N, respectively. However, compared to corresponding Ti samples, NiTi SMA samples had better tribological properties. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/58994
ISSN
2015 Impact Factor: 3.15
2015 SCImago Journal Rankings: 0.930
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Ten_HK
dc.contributor.authorWang, Men_HK
dc.date.accessioned2010-05-31T03:41:04Z-
dc.date.available2010-05-31T03:41:04Z-
dc.date.issued2008en_HK
dc.identifier.citationApplied Surface Science, 2008, v. 255 n. 2, p. 404-408en_HK
dc.identifier.issn0169-4332en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58994-
dc.description.abstractTo make metals bioactive for orthopaedic applications, apatite/TiO2 composite coatings were formed on Ti and NiTi shape memory alloy (SMA) using a H2O2-oxidation and hot water aging technique and the subsequent accelerated biomimetic process. In the current investigation, nanoindentation, scratch testing and frictional testing were employed to assess mechanical properties and the adhesion of apatite/TiO2 composite coatings formed on Ti and NiTi SMA. Nanoindentation testing conducted on cross-sections of composite coatings indicated that there was no significant difference in nanohardness and elastic modulus between apatite/TiO2 composite coatings formed on Ti and NiTi SMA samples. The enhancement of the adhesion between the apatite layer and the metal substrates arose from the TiO2 intermediate layer in the composite coating. The highest values of coating adhesion strength for Ti and NiTi SMA samples, as measured by scratch tests, were 22.58 N and 19.07 N, respectively. However, compared to corresponding Ti samples, NiTi SMA samples had better tribological properties. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/apsuscen_HK
dc.relation.ispartofApplied Surface Scienceen_HK
dc.rightsApplied Surface Science. Copyright © Elsevier BV.en_HK
dc.subjectApatiteen_HK
dc.subjectComposite coatingen_HK
dc.subjectFrictionen_HK
dc.subjectNanoindentationen_HK
dc.subjectNiTien_HK
dc.subjectScratchen_HK
dc.subjectTien_HK
dc.subjectTiO2en_HK
dc.titleMechanical performance of apatite/TiO2 composite coatings formed on Ti and NiTi shape memory alloyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0169-4332&volume=255&spage=404&epage=408&date=2008&atitle=Mechanical+performance+of+apatite/TiO2+composite+coatings+formed+on+Ti+and+NiTi+shape+memory+alloyen_HK
dc.identifier.emailWang, M:memwang@hku.hken_HK
dc.identifier.authorityWang, M=rp00185en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.apsusc.2008.06.070en_HK
dc.identifier.scopuseid_2-s2.0-54349093254en_HK
dc.identifier.hkuros157732en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-54349093254&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume255en_HK
dc.identifier.issue2en_HK
dc.identifier.spage404en_HK
dc.identifier.epage408en_HK
dc.identifier.isiWOS:000260510600041-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridSun, T=7402922748en_HK
dc.identifier.scopusauthoridWang, M=15749714100en_HK

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