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Article: Nano-structural bioactive gradient coating fabricated by computer controlled plasma-spraying technology

TitleNano-structural bioactive gradient coating fabricated by computer controlled plasma-spraying technology
Authors
Issue Date2006
PublisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0957-4530
Citation
Journal Of Materials Science: Materials In Medicine, 2006, v. 17 n. 10, p. 875-884 How to Cite?
AbstractThe poor mechanical property of hydroxyapatite was the major problem for load bearing and implant coating in clinical applications. To overcome this weakness, a bioactive gradient coating with a special design composition of hydroxyapatite (HA), ZrO 2, Ti, bioglass was developed. This 120 μm coating with an upper layer of 30-50 μm porous HA produced by computer controlled plasma spraying which maintained energy level of the plasma which ensure proper melting of powder. The crystal size of the coating was 18.6-26.2 nm. Transformation of t-ZrO 2 to m-ZrO 2 reduced the thermal stress that weakened the coating and lowered down interfacial strength of the coating and metal substrate. Thermal stress of sprayed coating was 16.4 MPa which was much smaller than the sample without thermal treatment of 67.1 MPa. Interfacial strength between the coating and metal substrate was 53 MPa which is much higher than conventional Hydroxyapatite coating. Based on XRD analysis crystallinity of HA approached 98%. Therefore, high temperature treatment improved long term stability of the coating through improved crystallinity of hydroxyapatite and reduced other impure calcium phosphate phase. © Springer Science + Business Media, LLC 2006.
Persistent Identifierhttp://hdl.handle.net/10722/79683
ISSN
2015 Impact Factor: 2.272
2013 SCImago Journal Rankings: 0.897
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNing, CYen_HK
dc.contributor.authorWang, YJen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorQiu, QXen_HK
dc.contributor.authorLam, RWMen_HK
dc.contributor.authorChen, XFen_HK
dc.contributor.authorChiu, KYen_HK
dc.contributor.authorYe, JDen_HK
dc.contributor.authorWu, Gen_HK
dc.contributor.authorWu, ZHen_HK
dc.contributor.authorChow, SPen_HK
dc.date.accessioned2010-09-06T07:57:24Z-
dc.date.available2010-09-06T07:57:24Z-
dc.date.issued2006en_HK
dc.identifier.citationJournal Of Materials Science: Materials In Medicine, 2006, v. 17 n. 10, p. 875-884en_HK
dc.identifier.issn0957-4530en_HK
dc.identifier.urihttp://hdl.handle.net/10722/79683-
dc.description.abstractThe poor mechanical property of hydroxyapatite was the major problem for load bearing and implant coating in clinical applications. To overcome this weakness, a bioactive gradient coating with a special design composition of hydroxyapatite (HA), ZrO 2, Ti, bioglass was developed. This 120 μm coating with an upper layer of 30-50 μm porous HA produced by computer controlled plasma spraying which maintained energy level of the plasma which ensure proper melting of powder. The crystal size of the coating was 18.6-26.2 nm. Transformation of t-ZrO 2 to m-ZrO 2 reduced the thermal stress that weakened the coating and lowered down interfacial strength of the coating and metal substrate. Thermal stress of sprayed coating was 16.4 MPa which was much smaller than the sample without thermal treatment of 67.1 MPa. Interfacial strength between the coating and metal substrate was 53 MPa which is much higher than conventional Hydroxyapatite coating. Based on XRD analysis crystallinity of HA approached 98%. Therefore, high temperature treatment improved long term stability of the coating through improved crystallinity of hydroxyapatite and reduced other impure calcium phosphate phase. © Springer Science + Business Media, LLC 2006.en_HK
dc.languageengen_HK
dc.publisherSpringer New York LLC. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0957-4530en_HK
dc.relation.ispartofJournal of Materials Science: Materials in Medicineen_HK
dc.titleNano-structural bioactive gradient coating fabricated by computer controlled plasma-spraying technologyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0957-4530&volume=17&issue=10&spage=875&epage=884&date=2006&atitle=Nano-structural+bioactive+gradient+coating+fabricated+by+computer+controlled+plasma-spraying+technology+en_HK
dc.identifier.emailLu, WW: wwlu@hku.hken_HK
dc.identifier.emailChiu, KY: pkychiu@hkucc.hku.hken_HK
dc.identifier.emailChow, SP: spchow@hku.hken_HK
dc.identifier.authorityLu, WW=rp00411en_HK
dc.identifier.authorityChiu, KY=rp00379en_HK
dc.identifier.authorityChow, SP=rp00064en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s10856-006-0176-9en_HK
dc.identifier.pmid16977384-
dc.identifier.scopuseid_2-s2.0-33748867250en_HK
dc.identifier.hkuros134027en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33748867250&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume17en_HK
dc.identifier.issue10en_HK
dc.identifier.spage875en_HK
dc.identifier.epage884en_HK
dc.identifier.isiWOS:000240553600001-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridNing, CY=9238411800en_HK
dc.identifier.scopusauthoridWang, YJ=9238411600en_HK
dc.identifier.scopusauthoridLu, WW=7404215221en_HK
dc.identifier.scopusauthoridQiu, QX=49762076700en_HK
dc.identifier.scopusauthoridLam, RWM=14625371400en_HK
dc.identifier.scopusauthoridChen, XF=49761060900en_HK
dc.identifier.scopusauthoridChiu, KY=7202988127en_HK
dc.identifier.scopusauthoridYe, JD=8096401000en_HK
dc.identifier.scopusauthoridWu, G=7404975126en_HK
dc.identifier.scopusauthoridWu, ZH=8668508800en_HK
dc.identifier.scopusauthoridChow, SP=7201828376en_HK
dc.identifier.citeulike933199-

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