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dc.contributor.advisorGrieseler, Rolf
dc.contributor.advisorSchaaf, Peter
dc.contributor.advisorRumiche Zapata, Francisco
dc.contributor.authorUgarte Díaz, Jorge Alfonsoes_ES
dc.description.abstractIn this work, hydroxyapatite (HAp) thin films were fabricated using two different sputtering techniques: Radio frequency magnetron sputtering and ion beam sputtering. In the first case, the films were grown on Ti-6Al-4V substrates using a high-purity commercial HAp target, obtaining a thickness ~200 nm. For the second method, the film were grown on pure titanium substrates using a self-produced HAp target. This target was fabricated with powders (Ca/P = 1.628, sintered and crushed). Here, the thickness of the fabricated film was ~300 nm. The sintering tests for the target fabrication were carried out using two different heating regimens at a maximum temperature of 1200 °C (holding time of 2h and 4h) using various additives. As additives, water (H2O), polyvinyl alcohol (PVA) and polyethylene glycol (PEG) were used to improve the mechanical strength of the green discs. The as-deposited films were amorphous in both cases. Therefore, the films were annealed to increase the crystallinity. Annealing was performed in air for 2h at temperatures: 400, 600 and 800 °C for RF-magnetron sputter samples; 600 and 800 °C for ion beam sputter samples. The result of the films shows in both cases that the crystallinity of HAp was improved only for the annealed samples fabricated with ion beam sputtering at 800 °C. In both cases energy dispersive X-ray spectroscopy measurements show a decrease in Ca/P ratio with increasing the temperature. Hardness results revealed an increase in this with the increase in temperature possibly due to the formation of titanium oxide. The roughness for the fabricated films with the RFmagnetron sputtering increases till an annealing temperature of 600 °C and then decreases till 800 °C, while the roughness for the fabricated films with ion beam sputtering is higher in the as-deposited samples and then this is reduced by increasing the annealing temperature.es_ES
dc.publisherPontificia Universidad Católica del Perúes_ES
dc.rightsAtribución-NoComercial-SinDerivadas 2.5 Perú*
dc.sourcePontificia Universidad Católica del Perúes_ES
dc.sourceRepositorio de Tesis - PUCPes_ES
dc.subjectHidrocarburos policíclicos aromáticos--Propiedades mecánicases_ES
dc.subjectPelículas delgadases_ES
dc.titlePreparation and characterization of sputtered hydroxyapatite thin filmses_ES
dc.typeinfo:eu-repo/semantics/masterThesises_ESíster en Ingeniería y Ciencia de los Materialeses_ESíaes_ES Universidad Católica del Perú. Escuela de Posgrado.es_ESía y Ciencia de los Materialeses_ES

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Atribución-NoComercial-SinDerivadas 2.5 Perú
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 2.5 Perú