Publicação: Caracterizacion metalografica de aleaciones metalicas utilizadas como biomateriales en implantes quirurgicos
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Data
1998-01-01
Orientador
Coorientador
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Artigo
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Resumo
In this work, the chemical structure, the microstructure and the surface morphology of two non-ferrous materials used in dental implants (Ti-6Al-4V and Co-Cr-Mo) were studied. This was done by chemical analysis, scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), and strength measurements (HV). Metallographic studies reveal that titanium alloy surface present a fine granular binary phase structure, while cobalt alloy present cast dendrite structures with an intense precipitation of carbides. To correlate the macro and microstructure with the mechanical behavior of the material, microhardness measurements were performed. Using the Vickers hardening method, the Ti-6Al-4V alloy yielded strength mean values smaller than the Co-Cr-Mo alloy. Their values are associated to the chemical composition and to the microstructural distribution of these materials. The Ti-6Al-4V alloy presents hardness similar to dental enamel, which suggests better performance as dental implant.
Descrição
Palavras-chave
Biomaterials, Chemical analysis, Composition, Energy dispersive spectroscopy, Hardening, Implants (surgical), Mechanical variables measurement, Metallographic microstructure, Morphology, Scanning electron microscopy, Surface structure, Vickers hardness testing, Fine granular phase structure, Strength mean values, Strength measurement, Titanium alloys
Idioma
Espanhol
Como citar
Informacion Tecnologica, v. 9, n. 4, p. 35-40, 1998.
