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Conference Paper: Oxygen plasma treatment to restrain nickel out-diffusion from porous nickel titanium orthopedic materials

TitleOxygen plasma treatment to restrain nickel out-diffusion from porous nickel titanium orthopedic materials
Authors
KeywordsNi leaching
Plasma immersion ion implantation
Porous nickel titanium alloy
Simulated body fluid
Issue Date2007
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/surfcoat
Citation
Proceedings of the Fifth Asian-European International Conference on Plasma Surface Engineering (AEPSE 2005), Qingdao, China, 12–16 September 2005. In Surface And Coatings Technology, 2007, v. 201 n. 9-11 SPEC. ISS., p. 4893-4896 How to Cite?
AbstractPorous nickel-titanium (NiTi) shape memory alloy is a prospective orthopedic biomaterial due to its porous structure that allows bone tissue and blood vessel ingrowth during fixation of implants. Unfortunately, the higher probability of Ni release from the increased surface area of a porous surface compared to conventional dense NiTi shape memory alloys causes more serious health concerns. In order to mitigate leaching of harmful Ni ions, we create a firm barrier layer on the surface by conducting oxygen plasma immersion ion implantation (PIII) into the porous structure. The non-line-of-sight capability of PIII allows more uniform treatment of all exposed areas compared to beam-line ion implantation. Our simulated body fluid immersion test indicates that Ni leaching is significantly reduced after oxygen PIII. X-ray photoelectron spectroscopy profiles illustrate that the thickness of the barrier layer is almost unchanged after immersion in SBF for 4 weeks, demonstrating the excellent durability of the layer in a biological medium. © 2006 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/79572
ISSN
2015 Impact Factor: 2.139
2015 SCImago Journal Rankings: 0.872
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHo, JPYen_HK
dc.contributor.authorWu, SLen_HK
dc.contributor.authorPoon, RWYen_HK
dc.contributor.authorChung, CYen_HK
dc.contributor.authorTjong, SCen_HK
dc.contributor.authorChu, PKen_HK
dc.contributor.authorYeung, KWKen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorCheung, KMCen_HK
dc.contributor.authorLuk, KDKen_HK
dc.date.accessioned2010-09-06T07:56:10Z-
dc.date.available2010-09-06T07:56:10Z-
dc.date.issued2007en_HK
dc.identifier.citationProceedings of the Fifth Asian-European International Conference on Plasma Surface Engineering (AEPSE 2005), Qingdao, China, 12–16 September 2005. In Surface And Coatings Technology, 2007, v. 201 n. 9-11 SPEC. ISS., p. 4893-4896en_HK
dc.identifier.issn0257-8972en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79572-
dc.description.abstractPorous nickel-titanium (NiTi) shape memory alloy is a prospective orthopedic biomaterial due to its porous structure that allows bone tissue and blood vessel ingrowth during fixation of implants. Unfortunately, the higher probability of Ni release from the increased surface area of a porous surface compared to conventional dense NiTi shape memory alloys causes more serious health concerns. In order to mitigate leaching of harmful Ni ions, we create a firm barrier layer on the surface by conducting oxygen plasma immersion ion implantation (PIII) into the porous structure. The non-line-of-sight capability of PIII allows more uniform treatment of all exposed areas compared to beam-line ion implantation. Our simulated body fluid immersion test indicates that Ni leaching is significantly reduced after oxygen PIII. X-ray photoelectron spectroscopy profiles illustrate that the thickness of the barrier layer is almost unchanged after immersion in SBF for 4 weeks, demonstrating the excellent durability of the layer in a biological medium. © 2006 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/surfcoaten_HK
dc.relation.ispartofSurface and Coatings Technologyen_HK
dc.subjectNi leachingen_HK
dc.subjectPlasma immersion ion implantationen_HK
dc.subjectPorous nickel titanium alloyen_HK
dc.subjectSimulated body fluiden_HK
dc.titleOxygen plasma treatment to restrain nickel out-diffusion from porous nickel titanium orthopedic materialsen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0257-8972&volume=201&issue=9-11&spage=4893&epage=6&date=2007&atitle=Oxygen+plasma+treatment+to+restrain+nickel+out-diffusion+from+porous+nickel+titanium+orthopedic+materialsen_HK
dc.identifier.emailYeung, KWK:wkkyeung@hkucc.hku.hken_HK
dc.identifier.emailLu, WW:wwlu@hku.hken_HK
dc.identifier.emailCheung, KMC:cheungmc@hku.hken_HK
dc.identifier.emailLuk, KDK:hcm21000@hku.hken_HK
dc.identifier.authorityYeung, KWK=rp00309en_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.identifier.authorityCheung, KMC=rp00387en_HK
dc.identifier.authorityLuk, KDK=rp00333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.surfcoat.2006.07.072en_HK
dc.identifier.scopuseid_2-s2.0-33846512167en_HK
dc.identifier.hkuros137238en_HK
dc.identifier.hkuros121625-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846512167&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume201en_HK
dc.identifier.issue9-11 SPEC. ISS.en_HK
dc.identifier.spage4893en_HK
dc.identifier.epage4896en_HK
dc.identifier.isiWOS:000246509400020-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridHo, JPY=7402650045en_HK
dc.identifier.scopusauthoridWu, SL=15125218800en_HK
dc.identifier.scopusauthoridPoon, RWY=34572161800en_HK
dc.identifier.scopusauthoridChung, CY=8100842800en_HK
dc.identifier.scopusauthoridTjong, SC=7102940723en_HK
dc.identifier.scopusauthoridChu, PK=36040705700en_HK
dc.identifier.scopusauthoridYeung, KWK=13309584700en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK
dc.identifier.scopusauthoridCheung, KMC=7402406754en_HK
dc.identifier.scopusauthoridLuk, KDK=7201921573en_HK

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