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dc.contributor.author
Ballarre, Josefina
dc.contributor.author
López, Damián A.
dc.contributor.author
Rosero, Nataly C.
dc.contributor.author
Durán, Alicia
dc.contributor.author
Aparicio, Mario
dc.contributor.author
Ceré, Silvia
dc.date.available
2018-12-07T20:29:09Z
dc.date.issued
2008-11
dc.identifier.citation
Ballarre, Josefina; López, Damián A.; Rosero, Nataly C.; Durán, Alicia; Aparicio, Mario; et al.; Electrochemical evaluation of multilayer silica-metacrylate hybrid sol-gel coatings containing bioactive particles on surgical grade stainless steel; Elsevier Science Sa; Surface and Coatings Technology; 203; 1-2; 11-2008; 80-86
dc.identifier.issn
0257-8972
dc.identifier.uri
http://hdl.handle.net/11336/66116
dc.description.abstract
Metallic materials are the most used materials as orthopaedic or dental implants because of their excellent mechanical properties. However they are not able to create a natural bonding with the mineralized bone and occasionally suffer localized corrosion. This work describes the electrochemical behaviour of a system of coatings with the addition of bioactive particles of the system SiO2-CaO-P2 O5, that enhance the abilities of the implant to make an union with the existing bone and to resist the extreme environment that are exposed to. The coatings were obtain from two kind of sols that were made by sol-gel process: one, using tetraethoxysilane (TEOS) and methyl triethoxysilane (MTES) as precursors, and the other using hydroxyethyl methacylate (HEMA), tetraethoxysilane (TEOS) and 3-methacryloxypropyl-trimethoxysilane (γMPS) [TMH] as precursor. Coatings were made in two layers. The inner layer was prepared either using TEOS and MTES (that had already shown good anticorrosion properties), or TMH. The top layer was made with TMH with the addition of 10% in weight of small (diameter less than 20 μm) or big (more than 20 μm) bioactive particles. The samples were tested in vitro by polarization curves and electrochemical impedance spectroscopy (EIS) assays. The samples with the two kind of coatings seem to have a protective behaviour after 30 days of immersion due to the compact TEOS-MTES inner layer. The big particles placed in the outer layer showed a dissolution rate similar to the rate of deposition of the amorphous hydroxyapatite (aHAp) at the surface, blocking the entrance of the electrolyte, avoiding it to reach the substrate. The TMH coatings with small particles present a similar behaviour to the naked material, allowing the electrolyte to reach the metal. The dual coating with this kind of particles has similar characteristics, with a "sponge-like" behaviour, and the inner coating probably develops flaws due to the fast dissolution of the small particles placed in the upper layer. © 2008 Elsevier B.V. All rights reserved.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Bioactivity
dc.subject
Coatings
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Corrosion
dc.subject
Sol-Gel
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Stainless Steel
dc.subject.classification
Recubrimientos y Películas
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Ingeniería de los Materiales
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Electrochemical evaluation of multilayer silica-metacrylate hybrid sol-gel coatings containing bioactive particles on surgical grade stainless steel
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-12-05T14:45:59Z
dc.journal.volume
203
dc.journal.number
1-2
dc.journal.pagination
80-86
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ballarre, Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: López, Damián A.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Rosero, Nataly C.. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Durán, Alicia. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Aparicio, Mario. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Ceré, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.journal.title
Surface and Coatings Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S025789720800683X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.surfcoat.2008.08.005


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