Adhesion of sol-gel derived hydroxyapatite nanocoatings on anodised pure titanium and titanium (Ti6Al4V) alloy substrates

Roest, R; Latella, BA; Heness, G; Ben-Nissan, B

Adhesion of sol-gel derived hydroxyapatite nanocoatings on anodised pure titanium and titanium (Ti6Al4V) alloy substrates

Roest, R

Latella, BA Heness, G

Ben-Nissan, B

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Publication Type:: Journal Article
Citation:: Surface and Coatings Technology, 2011, 205 (11), pp. 3520 - 3529
Issue Date:: 2011-01-01

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Field	Value	Language
dc.contributor.author	Roest, R https://orcid.org/0000-0002-7018-5472	en_US
dc.contributor.author	Latella, BA	en_US
dc.contributor.author	Heness, G https://orcid.org/0000-0002-8630-8297	en_US
dc.contributor.author	Ben-Nissan, B	en_US
dc.date.issued	2011-01-01	en_US
dc.identifier.citation	Surface and Coatings Technology, 2011, 205 (11), pp. 3520 - 3529	en_US
dc.identifier.issn	0257-8972	en_US
dc.identifier.uri	http://hdl.handle.net/10453/18314
dc.description.abstract	The mechanical properties and adhesion behaviour of sol-gel derived hydroxyapatite (HA) nanocoatings on commercially pure (cp) titanium (Ti) and Ti6Al4V alloy have been determined and related to anodising treatment. The surface roughness, wetting and coating characteristics were examined using profilometry, contact angle, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Nano-indentation was used to determine the Young's modulus and hardness of the coatings, while microtensile tests were used to introduce controlled strains in the coatings through the cp Ti and TiAl6V4 alloy substrates, from which the strength, fracture toughness and adhesion behaviour could be ascertained based on multiple cracking and delamination events. The toughness of the HA coatings is found to be slightly lower to that of equivalent bulk pure HA ceramics. The substrate and the anodized layer thickness have the most influence on the interfacial adhesion of HA, with nanocoatings on Ti6Al4V exhibiting superior interfacial bonding in comparison to cp Ti. © 2010 Elsevier B.V.	en_US
dc.relation.ispartof	Surface and Coatings Technology	en_US
dc.relation.isbasedon	10.1016/j.surfcoat.2010.12.030	en_US
dc.subject.classification	Applied Physics	en_US
dc.title	Adhesion of sol-gel derived hydroxyapatite nanocoatings on anodised pure titanium and titanium (Ti6Al4V) alloy substrates	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	205	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0204 Condensed Matter Physics	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	205	en_US

Abstract:

The mechanical properties and adhesion behaviour of sol-gel derived hydroxyapatite (HA) nanocoatings on commercially pure (cp) titanium (Ti) and Ti6Al4V alloy have been determined and related to anodising treatment. The surface roughness, wetting and coating characteristics were examined using profilometry, contact angle, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Nano-indentation was used to determine the Young's modulus and hardness of the coatings, while microtensile tests were used to introduce controlled strains in the coatings through the cp Ti and TiAl6V4 alloy substrates, from which the strength, fracture toughness and adhesion behaviour could be ascertained based on multiple cracking and delamination events. The toughness of the HA coatings is found to be slightly lower to that of equivalent bulk pure HA ceramics. The substrate and the anodized layer thickness have the most influence on the interfacial adhesion of HA, with nanocoatings on Ti6Al4V exhibiting superior interfacial bonding in comparison to cp Ti. © 2010 Elsevier B.V.

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http://hdl.handle.net/10453/18314