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Article: Construction of TiO2/silane nanofilm on AZ31 magnesium alloy for controlled degradability and enhanced biocompatibility

TitleConstruction of TiO2/silane nanofilm on AZ31 magnesium alloy for controlled degradability and enhanced biocompatibility
Authors
KeywordsMagnesium alloy
TiO2
Biodegradability
Atomic layer deposition
Hybrid coating
Issue Date2019
PublisherSpringer Verlag, co-published with University of Science and Technology Beijing, Journal Publishing Center. The Journal's web site is located at http://www.elsevier.com/wps/product/cws_home/708738/description
Citation
Rare Metals, 2019, v. 38 n. 6, p. 588-600 How to Cite?
AbstractA TiO2 nanofilm was prepared on the surface of AZ31 magnesium alloy with controllable thickness through atomic layer deposition (ALD) technique, which can adjust the corrosion behaviors of AZ31 Mg alloy. Compared with the untreated Mg alloys, corrosion current densities (icorr) can decline by 58% in the 200-cycles TiO2-covered Mg alloy and further decline by up to 74% with the thickness of nanofilm up to 63 nm (400 cycles). The subsequent modification with a cross-linked conversion layer of 3-amino-propyltriethoxysilane (APTES) by a dipping method can produce a compact silane coating on TiO2 nanofilm, which can seal pinholes of TiO2 nanofilm and serve as a barrier to further adjust the corrosion behavior of the substrate. The icorr can decline about two orders of magnitude in the TiO2/silane composite coating. Making the adjustable corrosion rate come true, which can be attributed to the precise control on the thickness of metal oxide nanofilm and additional protection from the compact silane coating. In vitro study discloses that the TiO2/silane hybrid coating shows higher expression of alkaline phosphatase (ALP) and can promote cellular adhesion and proliferation with better cytocompatibility than untreated Mg alloy.
Persistent Identifierhttp://hdl.handle.net/10722/278242
ISSN
2019 Impact Factor: 2.161
2015 SCImago Journal Rankings: 0.391

 

DC FieldValueLanguage
dc.contributor.authorHUANG, L-
dc.contributor.authorSU, K-
dc.contributor.authorZHENG, YF-
dc.contributor.authorYeung, KWK-
dc.contributor.authorLIU, XM-
dc.date.accessioned2019-10-04T08:10:13Z-
dc.date.available2019-10-04T08:10:13Z-
dc.date.issued2019-
dc.identifier.citationRare Metals, 2019, v. 38 n. 6, p. 588-600-
dc.identifier.issn1001-0521-
dc.identifier.urihttp://hdl.handle.net/10722/278242-
dc.description.abstractA TiO2 nanofilm was prepared on the surface of AZ31 magnesium alloy with controllable thickness through atomic layer deposition (ALD) technique, which can adjust the corrosion behaviors of AZ31 Mg alloy. Compared with the untreated Mg alloys, corrosion current densities (icorr) can decline by 58% in the 200-cycles TiO2-covered Mg alloy and further decline by up to 74% with the thickness of nanofilm up to 63 nm (400 cycles). The subsequent modification with a cross-linked conversion layer of 3-amino-propyltriethoxysilane (APTES) by a dipping method can produce a compact silane coating on TiO2 nanofilm, which can seal pinholes of TiO2 nanofilm and serve as a barrier to further adjust the corrosion behavior of the substrate. The icorr can decline about two orders of magnitude in the TiO2/silane composite coating. Making the adjustable corrosion rate come true, which can be attributed to the precise control on the thickness of metal oxide nanofilm and additional protection from the compact silane coating. In vitro study discloses that the TiO2/silane hybrid coating shows higher expression of alkaline phosphatase (ALP) and can promote cellular adhesion and proliferation with better cytocompatibility than untreated Mg alloy.-
dc.languageeng-
dc.publisherSpringer Verlag, co-published with University of Science and Technology Beijing, Journal Publishing Center. The Journal's web site is located at http://www.elsevier.com/wps/product/cws_home/708738/description-
dc.relation.ispartofRare Metals-
dc.rightsThis is a post-peer-review, pre-copyedit version of an article published in [insert journal title]. The final authenticated version is available online at: http://dx.doi.org/[insert DOI]-
dc.subjectMagnesium alloy-
dc.subjectTiO2-
dc.subjectBiodegradability-
dc.subjectAtomic layer deposition-
dc.subjectHybrid coating-
dc.titleConstruction of TiO2/silane nanofilm on AZ31 magnesium alloy for controlled degradability and enhanced biocompatibility-
dc.typeArticle-
dc.identifier.emailYeung, KWK: wkkyeung@hku.hk-
dc.identifier.authorityYeung, KWK=rp00309-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s12598-018-1187-7-
dc.identifier.scopuseid_2-s2.0-85059570774-
dc.identifier.hkuros307084-
dc.identifier.volume38-
dc.identifier.issue6-
dc.identifier.spage588-
dc.identifier.epage600-
dc.publisher.placeGermany-

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