Banca de QUALIFICAÇÃO: CAMYLA REGINA DANTAS FERREIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : CAMYLA REGINA DANTAS FERREIRA
DATA : 30/11/2017
HORA: 14:00
LOCAL: Sala de reuniões do DEMat
TÍTULO:
PALAVRAS-CHAVES:

Bioceramics, hydroxyapatite, yttria doped zirconia, ceramic composite.

PÁGINAS: 66
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
RESUMO:

The use of ceramic materials by mankind has been carried out for years due to advantages such as its high tenacity and dimensional stability. In the field of bioceramics, hydroxyapatite is highlighted as a bioactive ceramic similar to an inorganic component of hard tissues, but due to its fragility and low resistance to mechanical stress, its application is limited. In order to obtain a material with high mechanical properties without compromising its biocompatibility, it was used the yttria doped zirconia, which is a bioinert ceramic with high resistance and fracture toughness. However, in the work in question compositions of hydroxyapatite and zirconia doped with yttria doped with 5, 10, 15 and 20% were carried out in order to obtain a final compound with high fracture toughness and with better bone-implant interaction. The samples were characterized by: X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), BET Method, Archimedes Assay, Microhardness, Scanning Electron Microscopy (SEM) and Fracture Toughness. The XRD results showed the formation of hydroxyapatite at different temperatures and calcination times, with the formation of composite materials with surface area and hardness decreasing with increasing presence of hydroxyapatite. The HA 15% sample presented the best mechanical behavior with higher values of fracture toughness, lower porosity and water absorption.

MEMBROS DA BANCA:
Externo ao Programa - 2345599 - BISMARCK LUIZ SILVA
Interno - 1802888 - FABIANA VILLELA DA MOTTA
Presidente - 1883170 - MAURICIO ROBERTO BOMIO DELMONTE