Síntese e caracterização de compósitos constituídos por ligas de titânio e hidroxiapatita obtida a partir de resíduos de peixes

Abstract

The search for new materials that meet biocompatibility requirements is current and growing, as the aging of the population has required an increase in applications in the treatment of diseases linked to the mobility of the human body. The focus of research on these materials has been directed to improving the mechanical and biocompatible properties, so that adverse reactions and rejections can be avoided. In this sense, the present study was designed for the production of composites made of titanium alloys (Ti) and hydroxyapatite [Ca10(PO4)6(OH)2, HA]. Powders of titanium-silicon-boron (TiSiB) and titanium-niobium (TiNb) alloys were obtained by high-energy grinding. Hydroxyapatite (HA) was extracted from fish scales and bones by calcination at 900°C and sent to high-energy milling in order to obtain it in powder form. The samples were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray fluorescence (FRX), X-ray diffraction (XRD), Fourier transform fluorescence spectroscopy (FT-IR). In the results of this research, it was possible to obtain hydroxyapatite (HA) from the scales and bones of calcined and ground fish. Alloys of titanium-niobium systems (TiNb) and alloys of titanium-silicon-boron systems (TiSiB) were obtained. In addition, with porosity, which was already expected, it was also possible to obtain the composite of hydroxyapatite (HA) with the elements titanium-niobium (TiNb) and titanium- silicon-boron (TiSiB).