Síntesis y caracterización de compuestos hidroxiapatita/ TiO2 para aplicaciones biomédicas

Diana C. Cárdenas-Guerrero; Próspero Acevedo-Peña; Elcy M. Córdoba-Tuta

Síntesis y caracterización de compuestos hidroxiapatita/ TiO₂ para aplicaciones biomédicas

Translated title of the contribution: Synthesis and characterization of hydroxyapatite/TiO₂ composites for biomedical applications

Diana C. Cárdenas-Guerrero, Próspero Acevedo-Peña, Elcy M. Córdoba-Tuta

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Hydroxyapatite (HA) reinforced with TiO₂ coatings were prepared by sol/gel dip coating on AISI 316L stainless steel. The thickness of the coatings was determined by confocal optical microscopy and the adhesion strength was evaluated by means of a pull-off tester. After selecting the optimal conditions for the formation of a film with good mechanical properties; the in vitro bioactivity of the coating was evaluated for two weeks, and then compared with those of HA and TiO₂ coatings. The growth of apatite was confirmed by SEM EDX characterization. Finally, the corrosion rate of the steel substrate was also evaluated, in order to analyze the stability of the coatings. The results showed that the formation of HA/TiO₂ films produced a bio-active material with a higher adherence, when compared to that obtained for films of HA and TiO₂. Nevertheless, the presence of HA affected the corrosion resistance of the film, as promoted by the presence of TiO ₂.

Translated title of the contribution	Synthesis and characterization of hydroxyapatite/TiO₂ composites for biomedical applications
Original language	Spanish
Pages (from-to)	214-224
Number of pages	11
Journal	Revista Latinoamericana de Metalurgia y Materiales
Volume	33
Issue number	2
State	Published - 2013
Externally published	Yes

Cite this

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title = "S{\'i}ntesis y caracterizaci{\'o}n de compuestos hidroxiapatita/ TiO2 para aplicaciones biom{\'e}dicas",

abstract = "Hydroxyapatite (HA) reinforced with TiO2 coatings were prepared by sol/gel dip coating on AISI 316L stainless steel. The thickness of the coatings was determined by confocal optical microscopy and the adhesion strength was evaluated by means of a pull-off tester. After selecting the optimal conditions for the formation of a film with good mechanical properties; the in vitro bioactivity of the coating was evaluated for two weeks, and then compared with those of HA and TiO2 coatings. The growth of apatite was confirmed by SEM EDX characterization. Finally, the corrosion rate of the steel substrate was also evaluated, in order to analyze the stability of the coatings. The results showed that the formation of HA/TiO2 films produced a bio-active material with a higher adherence, when compared to that obtained for films of HA and TiO2. Nevertheless, the presence of HA affected the corrosion resistance of the film, as promoted by the presence of TiO 2.",

keywords = "AISI 316L steel, Bioactivity, Biofilms, Corrosion resistance, Hydroxyapatite, TiO",

author = "C{\'a}rdenas-Guerrero, {Diana C.} and Pr{\'o}spero Acevedo-Pe{\~n}a and C{\'o}rdoba-Tuta, {Elcy M.}",

year = "2013",

language = "Espa{\~n}ol",

volume = "33",

pages = "214--224",

journal = "Revista Latinoamericana de Metalurgia y Materiales",

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TY - JOUR

T1 - Síntesis y caracterización de compuestos hidroxiapatita/ TiO2 para aplicaciones biomédicas

AU - Cárdenas-Guerrero, Diana C.

AU - Acevedo-Peña, Próspero

AU - Córdoba-Tuta, Elcy M.

PY - 2013

Y1 - 2013

N2 - Hydroxyapatite (HA) reinforced with TiO2 coatings were prepared by sol/gel dip coating on AISI 316L stainless steel. The thickness of the coatings was determined by confocal optical microscopy and the adhesion strength was evaluated by means of a pull-off tester. After selecting the optimal conditions for the formation of a film with good mechanical properties; the in vitro bioactivity of the coating was evaluated for two weeks, and then compared with those of HA and TiO2 coatings. The growth of apatite was confirmed by SEM EDX characterization. Finally, the corrosion rate of the steel substrate was also evaluated, in order to analyze the stability of the coatings. The results showed that the formation of HA/TiO2 films produced a bio-active material with a higher adherence, when compared to that obtained for films of HA and TiO2. Nevertheless, the presence of HA affected the corrosion resistance of the film, as promoted by the presence of TiO 2.

AB - Hydroxyapatite (HA) reinforced with TiO2 coatings were prepared by sol/gel dip coating on AISI 316L stainless steel. The thickness of the coatings was determined by confocal optical microscopy and the adhesion strength was evaluated by means of a pull-off tester. After selecting the optimal conditions for the formation of a film with good mechanical properties; the in vitro bioactivity of the coating was evaluated for two weeks, and then compared with those of HA and TiO2 coatings. The growth of apatite was confirmed by SEM EDX characterization. Finally, the corrosion rate of the steel substrate was also evaluated, in order to analyze the stability of the coatings. The results showed that the formation of HA/TiO2 films produced a bio-active material with a higher adherence, when compared to that obtained for films of HA and TiO2. Nevertheless, the presence of HA affected the corrosion resistance of the film, as promoted by the presence of TiO 2.

KW - AISI 316L steel

KW - Bioactivity

KW - Biofilms

KW - Corrosion resistance

KW - Hydroxyapatite

KW - TiO

UR - http://www.scopus.com/inward/record.url?scp=84878695324&partnerID=8YFLogxK

M3 - Artículo

SN - 0255-6952

VL - 33

SP - 214

EP - 224

JO - Revista Latinoamericana de Metalurgia y Materiales

JF - Revista Latinoamericana de Metalurgia y Materiales

IS - 2

ER -

Síntesis y caracterización de compuestos hidroxiapatita/ TiO₂ para aplicaciones biomédicas

Abstract

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