Caracterización de recubrimientos de hidroxiapatita depositadas sobre la aleación Ti6Al7Nb a través de aspersión térmica a plasma

Document typeArticle
Defense date2000-12
PublisherSociedad Ibérica de Biomecánica y Biomateriales
Rights accessOpen Access
Abstract
Hydroxyapatite (HA) coated onto titanium alloys by atmospheric plasma-arc spraying is a promising
technique for improving biocompatibility of materials. The tissue adherence to the HA coating
increases when compared to the provided by the natural environment of the human body.
Hidroxyapatite coating applied to a Ti-6Al-7Nb alloy substrate by plasma spray was characterized
morphologically via Scanning Electron Microscopy (SEM) and X-Ray diffraction. X-Ray diffraction
results of the HA layer indicated the presence of crystalline HA, amorphous phase and another
constituents, like tricalcium phosphate (TCP) and calcium oxide. However, after annealing at a
temperature of 600oC there was recristalisation of the amorphous phase and transformation of some
of the TCP to HA. SEM results revealed a lamellar morphology which is typical of plasma sprayed
surfaces. The HA/alloy interface exhibited some irregularities, however these are not present in the
majority of the interfacial area.
CitationCecilia Amelia, C.Z. [et al]. Caracterización de recubrimientos de hidroxiapatita depositadas sobre la aleación Ti6Al7Nb a través de aspersión térmica a plasma . Biomecánica, 2000, vol. 8, núm. 1, p. 49-53.
ISSN1885-9518
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