Metallic Biomaterials
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Morphology, Crystalline Structure and Chemical Composition Of MAO Treated Ti-15Zr-Mo Surfaces Enriched with Bioactive Ions
In this study, MAO treatment was used to enrich, with bioactive Ca, Mg and P atoms, as-casted and heat-treated Ti-15Zr-xMo (x = 0, 5, 10 and 15 wt%) alloys, for potential use as advanced metallic biomaterials. The chemical composition of the surface was evaluated by EDS and XPS measurements. The morphology and microstructure was analyzed by OM and SEM images
Mat. Res.. Publicado em: 09/12/2019
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2. Effect of Thermo-Mechanical Treatments on the Microstructure and Mechanical Properties of the Metastable β-type Ti-35Nb-7Zr-5Ta Alloy
In this work, theoretical composition design and thermo-mechanical treatments were combined in order to improve the mechanical compatibility of a biomedical β-type titanium alloy. By applying a composition design theory, cold rolling and low temperature aging, a metastable β-type Ti-35Nb-7Zr-5Ta (wt%) alloy with an elastic modulus of 47 GPa and a yield str
Mat. Res.. Publicado em: 29/10/2018
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3. Obtención de compuesto de titanio con gradiente de porosidad mediante técnica pulvimetalúrgica
ABSTRACT Within the study of biomaterials for implantological use titanium is among the most widely employed metals due to its excellent corrosion and mechanical resistance. In spite of the advances made, there are some issues remaining with the value of the elastic moduli of the titanium (110GPa) in comparison with the elastic moduli of the cortical bone (2
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Influence of biomaterials on scintigraphic diagnosis of periprosthetic infections. Ceftizoxime-99m technetium model
Abstract Purpose: To compare the influence of two metallic implants in the diagnosis of periprosthetic infection using 99m technetium-labeled ceftizoxime. Methods: Twenty rats were randomly divided into four groups, which received sterile and contaminated titanium and stainless steel implants. After 3 weeks, scintilographic images were obtained using a ga
Acta Cir. Bras.. Publicado em: 2018-01
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5. SÍNTESE E CARACTERIZAÇÃO DE HIDROXIAPATITA ENRIQUECIDA COM PRATA E ZINCO PARA APLICAÇÃO EM ENGENHARIA TECIDUAL ÓSSEA. / SYNTHESIS AND CHARACTERIZATION OF HYDROXYAPATITE ENRICHED WITH SILVER AND ZINC APPLICATION FOR BONE TISSUE ENGINEERING.
O principal objetivo desse trabalho foi estudar a incorporação individual e simultânea dos íons Zn2+ e Ag+ e seus efeitos sobre as características físico-químicas da hidroxiapatita (HA) visando sua aplicação na engenharia tecidual óssea. Análises químicas confirmaram a presença de 0,10% de Zn2+ e 0,13% de Ag+ (em relação à quantidade de Ca2+
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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6. Preparation and characterization of stainless steel 316L/HA biocomposite
The austenitic stainless steel 316L is the most used metallic biomaterials in orthopedics applications, especially in the manufacture of articulated prostheses and as structural elements in fracture fixation, since it has high mechanical strength. However, because it is biologically inactive, it does not form chemical bond with bone tissue, it is fixed only
Mat. Res.. Publicado em: 21/12/2012
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7. Assessment of the genetic risks of a metallic alloy used in medical implants
The use of artificial implants provides a palliative or permanent solution for individuals who have lost some bodily function through disease, an accident or natural wear. This functional loss can be compensated for by the use of medical devices produced from special biomaterials. Titanium alloy (Ti-6Al-4V) is a well-established primary metallic biomaterial
Genetics and Molecular Biology. Publicado em: 07/01/2011
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8. STUDY OF THE DYNAMIC RECRYSTALLIZATION DURING THE DEFORMATION THE HOT ONE OF A STEEL ISO 5832-9 / ESTUDO DA RECRISTALIZAÇÃO DINÂMICA DURANTE A DEFORMAÇÃO A QUENTE DE UM AÇO ISO 5832-9
Os aços inoxidáveis austeníticos possuem um baixo valor econômico quando comparados ao titânio e suas ligas, considerados os mais resistentes à corrosão em meio biológico, e há mais de cinquenta anos são amplamente utilizados na confecção de implantes ortopédicos, em especial no serviço de saúde pública. Atualmente o aço ISO 5832-1 (ASTM F 1
Publicado em: 2010
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9. Comparative biomechanical evaluation of flexion resistance between absorbable and metalic plate and screws used in mandibular body poliuretane / Estudo comparativo da resistencia mecanica a flexão de placas e parafusos reabsorviveis e metalicos utilizados em osteotomias de corpo em mandibulas de poliuretano
The meaning of this study was to evaluate and compare the resistance to flexion between metallic and absorbable plates and screws for rigid internal fixation. It was used synthetic hemimandible of polyurethane, in which one was performed a straight cut between second premolar and first molar, simulating a breaking of mandibular body. It was established two g
Publicado em: 2008
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10. Mechanical properties and corrosion resistance of the Ti-35Nb alloys applied as biomaterial / Propriedades mecanicas e de resistencia a corrosão de ligas Ti-35Nb a serem aplicadas como biomaterial
Titanium alloys form the most versatile class of metallic materials used as biomaterials. Among them, one finds the ß ?type alloy, which must soon become the standard metallic materials for orthopedic applications. The aim of this work is to prepare and characterize a type ß ?titanium alloy containing 35 wt.% Nb. Samples of such alloy were rapidly and slow
Publicado em: 2008
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11. Biomaterials : hydroxyapatite deposition study via polymeric process on cp Ti surfaces modified by laser beam / Biomateriais : estudo da deposição de hidroxiapatita por via polimerica sobre superficies de Ti cp modificado por feixe de laser
The biomaterials area has been focused on the development of synthetic or artificial materials that have similar properties to the human bone tissue. Among the diverse alternatives, one of the most used is the metallic substrate coated with bioceramics. By this technique it is possible to combine biocompatibilty, mechanical properties and corrosion resistanc
Publicado em: 2007
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12. Filmes híbridos orgânico-inorgânicos a partir de óleo de soja funcionalizado
Organic-inorganic hybrids materials can be prepared by the sol-gel process and have applications in biomaterials, catalysis, optics, membranes, chromatography, electrochemistry and coatings. Vegetable oils can be used as organic component for the preparation of these materials and, as they are biodegradable and obtained from natural and renewable sources, th
Publicado em: 2006