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Article: Formation and electrochemical behavior of Al and O plasma-implanted biodegradable Mg-Y-RE alloy
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TitleFormation and electrochemical behavior of Al and O plasma-implanted biodegradable Mg-Y-RE alloy
 
AuthorsZhao, Y1 2
Wu, G2
Pan, H1
Yeung, KWK1
Chu, PK2
 
Issue Date2012
 
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/matchemphys
 
CitationMaterials Chemistry and Physics, 2012, v. 132 n. 1, p. 187-191 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.matchemphys.2011.11.028
 
AbstractMg-Y-RE alloy is potentially useful in biodegradable implants but the fast degradation rate in the physiological environment restrains actual applications. In order to enhance the corrosion resistance, aluminum and oxygen ion implantation is employed to modify the surface of the Mg-Y-RE alloy. X-ray photoelectron spectroscopy (XPS) is conducted to obtain elemental depth profiles and determine chemical state changes. Electrochemical impedance spectroscopy and potentiodynamic polarization are employed to investigate the electrochemical behavior in simulated body fluids (SBF). After polarization, the corroded surface is further studied by scanning electron microscopy (SEM). The results indicate Al and O ion implantation produces an Al 2O 3-containing protection layer which improves the corrosion resistance of Mg-Y-RE alloy. After the surface treatment, localized corrosion becomes the dominant corrosion mechanism instead of general corrosion. © 2011 Elsevier B.V.
 
ISSN0254-0584
2013 Impact Factor: 2.129
2013 SCImago Journal Rankings: 0.892
 
DOIhttp://dx.doi.org/10.1016/j.matchemphys.2011.11.028
 
ISI Accession Number IDWOS:000300865900029
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhao, Y
 
dc.contributor.authorWu, G
 
dc.contributor.authorPan, H
 
dc.contributor.authorYeung, KWK
 
dc.contributor.authorChu, PK
 
dc.date.accessioned2012-08-16T05:55:35Z
 
dc.date.available2012-08-16T05:55:35Z
 
dc.date.issued2012
 
dc.description.abstractMg-Y-RE alloy is potentially useful in biodegradable implants but the fast degradation rate in the physiological environment restrains actual applications. In order to enhance the corrosion resistance, aluminum and oxygen ion implantation is employed to modify the surface of the Mg-Y-RE alloy. X-ray photoelectron spectroscopy (XPS) is conducted to obtain elemental depth profiles and determine chemical state changes. Electrochemical impedance spectroscopy and potentiodynamic polarization are employed to investigate the electrochemical behavior in simulated body fluids (SBF). After polarization, the corroded surface is further studied by scanning electron microscopy (SEM). The results indicate Al and O ion implantation produces an Al 2O 3-containing protection layer which improves the corrosion resistance of Mg-Y-RE alloy. After the surface treatment, localized corrosion becomes the dominant corrosion mechanism instead of general corrosion. © 2011 Elsevier B.V.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationMaterials Chemistry and Physics, 2012, v. 132 n. 1, p. 187-191 [How to Cite?]
DOI: http://dx.doi.org/10.1016/j.matchemphys.2011.11.028
 
dc.identifier.citeulike10128008
 
dc.identifier.doihttp://dx.doi.org/10.1016/j.matchemphys.2011.11.028
 
dc.identifier.epage191
 
dc.identifier.hkuros204534
 
dc.identifier.isiWOS:000300865900029
 
dc.identifier.issn0254-0584
2013 Impact Factor: 2.129
2013 SCImago Journal Rankings: 0.892
 
dc.identifier.issue1
 
dc.identifier.scopuseid_2-s2.0-84355161840
 
dc.identifier.spage187
 
dc.identifier.urihttp://hdl.handle.net/10722/159755
 
dc.identifier.volume132
 
dc.languageeng
 
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/matchemphys
 
dc.publisher.placeSwitzerland
 
dc.relation.ispartofMaterials Chemistry and Physics
 
dc.relation.referencesReferences in Scopus
 
dc.subject.meshChemical state changes
 
dc.subject.meshCorroded surface
 
dc.subject.meshCorrosion mechanisms
 
dc.subject.meshDegradation rate
 
dc.subject.meshDepth profile
 
dc.titleFormation and electrochemical behavior of Al and O plasma-implanted biodegradable Mg-Y-RE alloy
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. City University of Hong Kong