The biomimetic method was used in order to deposit, on titanium substrates, an hydroxyapatite (HA) coating. The bioactive HA layer was obtained by using, in the first stage of the process, a glass having the composition 2.5CaO.2SiO(2) different from the one proposed for the application of the biomimetic method. This glass can be obtained via sol-gel, a method that allows one to obtain, easily, very pure products. The growth of HA crystals was confirmed by Fourier transform infrared, SEM, EDS and X-ray photoelectron spectroscopy (XPS) results. The experimental results suggest that, as reported in the literature for other supports, the silicate ions released from the glass in the first stage bind themselves to the titanium support. In particular, from XPS analysis it is evident that the titanium substrate is well covered by a calcium phosphate layer of the type of HA. (C) 2002 Kluwer Academic Publishers.
Hydroxyapatite coating of titanium by biomimetic method / Costantini, Aniello; Luciani, Giuseppina; Branda, Francesco; L., Ambrosio; G., Mattogno; L., Pandolfi. - In: JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE. - ISSN 0957-4530. - ELETTRONICO. - 13:(2002), pp. 891-894. [10.1023/A:1016508631042]
Hydroxyapatite coating of titanium by biomimetic method
COSTANTINI, ANIELLO;LUCIANI, GIUSEPPINA;BRANDA, FRANCESCO;
2002
Abstract
The biomimetic method was used in order to deposit, on titanium substrates, an hydroxyapatite (HA) coating. The bioactive HA layer was obtained by using, in the first stage of the process, a glass having the composition 2.5CaO.2SiO(2) different from the one proposed for the application of the biomimetic method. This glass can be obtained via sol-gel, a method that allows one to obtain, easily, very pure products. The growth of HA crystals was confirmed by Fourier transform infrared, SEM, EDS and X-ray photoelectron spectroscopy (XPS) results. The experimental results suggest that, as reported in the literature for other supports, the silicate ions released from the glass in the first stage bind themselves to the titanium support. In particular, from XPS analysis it is evident that the titanium substrate is well covered by a calcium phosphate layer of the type of HA. (C) 2002 Kluwer Academic Publishers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
