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Article: Effects of pulsing frequency on shape recovery and investigation of nickel out-diffusion after mechanical bending of nitrogen plasma implanted NiTi shape memory alloys

TitleEffects of pulsing frequency on shape recovery and investigation of nickel out-diffusion after mechanical bending of nitrogen plasma implanted NiTi shape memory alloys
Authors
KeywordsNickel-titanium shape memory alloy
Plasma immersion ion implantation
Shape recovery
Surface barrier layer
Issue Date2007
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/surfcoat
Citation
Surface And Coatings Technology, 2007, v. 201 n. 19-20 SPEC. ISS., p. 8286-8290 How to Cite?
AbstractNickel-titanium shape memory alloy bars were treated by nitrogen plasma immersion ion implantation at 50 and 100 Hz to investigate the effects of pulsing frequencies on the shape recovery ability. The shape recovery of the treated and untreated control samples was assessed using bending tests. It was found that the 50 Hz sample retained the same shape recovery ability similar to the untreated control sample but the 100 Hz sample could not return to the original shape. Immersion tests in simulated body fluids on the bent-and-recovered bars show that the amount of Ni leached from the treated NiTi bars was 18.2% of that of the untreated control samples. The results show that the nitrogen plasma treatment is effective in impeding the out-diffusion of nickel even after extensive shape deformation. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/79349
ISSN
2015 Impact Factor: 2.139
2015 SCImago Journal Rankings: 0.872
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPoon, RWYen_HK
dc.contributor.authorChu, PKen_HK
dc.contributor.authorYeung, KWKen_HK
dc.contributor.authorChung, JCYen_HK
dc.contributor.authorTjong, SCen_HK
dc.contributor.authorChu, CLen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorCheung, KMCen_HK
dc.contributor.authorLuk, KKDen_HK
dc.date.accessioned2010-09-06T07:53:40Z-
dc.date.available2010-09-06T07:53:40Z-
dc.date.issued2007en_HK
dc.identifier.citationSurface And Coatings Technology, 2007, v. 201 n. 19-20 SPEC. ISS., p. 8286-8290en_HK
dc.identifier.issn0257-8972en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79349-
dc.description.abstractNickel-titanium shape memory alloy bars were treated by nitrogen plasma immersion ion implantation at 50 and 100 Hz to investigate the effects of pulsing frequencies on the shape recovery ability. The shape recovery of the treated and untreated control samples was assessed using bending tests. It was found that the 50 Hz sample retained the same shape recovery ability similar to the untreated control sample but the 100 Hz sample could not return to the original shape. Immersion tests in simulated body fluids on the bent-and-recovered bars show that the amount of Ni leached from the treated NiTi bars was 18.2% of that of the untreated control samples. The results show that the nitrogen plasma treatment is effective in impeding the out-diffusion of nickel even after extensive shape deformation. © 2007 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.subjectNickel-titanium shape memory alloyen_HK
dc.subjectPlasma immersion ion implantationen_HK
dc.subjectShape recoveryen_HK
dc.subjectSurface barrier layeren_HK
dc.titleEffects of pulsing frequency on shape recovery and investigation of nickel out-diffusion after mechanical bending of nitrogen plasma implanted NiTi shape memory alloysen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0257-8972&volume=201&spage=8286&epage=8290&date=2007&atitle=Effects+of+pulsing+frequency+on+shape+recovery+and+investigation+of+nickel+out-diffusion+after+mechanical+bending+of+nitrogenen_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, KKD: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, KKD=rp00333en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.surfcoat.2006.03.065en_HK
dc.identifier.scopuseid_2-s2.0-34447511209en_HK
dc.identifier.hkuros145176en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34447511209&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume201en_HK
dc.identifier.issue19-20 SPEC. ISS.en_HK
dc.identifier.spage8286en_HK
dc.identifier.epage8290en_HK
dc.identifier.isiWOS:000249034000058-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridPoon, RWY=34572161800en_HK
dc.identifier.scopusauthoridChu, PK=36040705700en_HK
dc.identifier.scopusauthoridYeung, KWK=13309584700en_HK
dc.identifier.scopusauthoridChung, JCY=7404002978en_HK
dc.identifier.scopusauthoridTjong, SC=7102940723en_HK
dc.identifier.scopusauthoridChu, CL=7404345713en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK
dc.identifier.scopusauthoridCheung, KMC=7402406754en_HK
dc.identifier.scopusauthoridLuk, KKD=7201921573en_HK

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