Hydroxyapatite coatings prepared by a sol-gel process

Authors

  • E. Peón Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC). Centro de Biomateriales, Universidad de La Habana (Cuba)
  • A. Jiménez Morales Universidad Carlos III de Madrid
  • E. Fernández-Escalante Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)
  • M. C. García-Alonso Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)
  • M. L. Escudero Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)
  • J. C. Galván Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC)

DOI:

https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1080

Keywords:

Hydroxyapatite, Sol-gel coatings, Biomaterials, MA956 alloy

Abstract


Hydroxyapatite coatings (HAp) have been obtained starting from precursors of sol-gel type. The coatings previously oxidized were deposited on metal surfaces of a based on iron alloy so-called MA956. The alloys were at high temperatures, in order to improve the adhesion with the hydroxyapatite coatings. The sol-gel coating was obtained applying an aqueous route, using triethyl phosphite and aqueous calcium nitrate, as precursors of phosphorous and calcium, respectively. Different sintering thermal treatments were applied on the resulting gels in order to obtain a homogeneous, adherent and crystalline hydroxyapatite coating. The characterization techniques used for this study were optical microscopy, SEM/EDX, XDR and FTIR. Moreover, the adhesion between the hydroxylapatite coating and the substrate was assessed according to the ASTM D 3359-02 standard test method. The results of this study showed that the best thermal treatment is obtained for a sintering temperature of 550 °C during a time of 72 h.

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Published

2005-12-17

How to Cite

Peón, E., Jiménez Morales, A., Fernández-Escalante, E., García-Alonso, M. C., Escudero, M. L., & Galván, J. C. (2005). Hydroxyapatite coatings prepared by a sol-gel process. Revista De Metalurgia, 41(Extra), 479–482. https://doi.org/10.3989/revmetalm.2005.v41.iExtra.1080

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