Síntese e caracterização de biocerâmicas à base de fosfato de cálcio modificada com nióbio

• Ano de defesa: 2014
• Autor(a) principal: Nadia Sueli Vieira Capanema
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: Fosfato de cálcio; Biocerâmica; Hidroxiapatita; Hidroxiapatita modificada com nióbio; Biomateriais; Engenharia metalúrgica
• Link de acesso: http://hdl.handle.net/1843/BUOS-9PXJ68

The need for obtaining new materials to replace human body parts that were destroyed or damaged led scientists from different areas of research for developing new biomaterials. Thus, the aim of this work was the synthesis and characterization of niobium-modified apatite bioceramics. Calcium phosphates (CaP) were synthesized with niobium partially replacing calcium sites using aqueous precipitation route at room temperature. The bioceramics, with and without Nb incorporation, were characterized by scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS) and X- ray diffraction (XRD) as prepared and after heat treatments The results indicated that Nb was incorporated in the apatite structure promoting morphological and structural changes in the ceramic properties.