Avaliação da espinelização in situ como mecanismo de tenacificação da hidroxiapatita
Hydroxyapatite is a ceramic biomaterial able to perform biological role in contact with living tissue, similarly to natural bone tissue. It represents the mineral part of teeth and bones of vertebrate animals, and can be synthesized by several different routes. The properties of hydroxyapatite are:...
| Autor principal: | Lima, Murilo Pires de |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/12233 |
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| Resumo: |
Hydroxyapatite is a ceramic biomaterial able to perform biological role in contact with living tissue, similarly to natural bone tissue. It represents the mineral part of teeth and bones of vertebrate animals, and can be synthesized by several different routes. The properties of hydroxyapatite are: stiffness, high compression strength and Poisson’s ratio compatible with bone material, but the synthetic hydroxyapatite presents low toughness (compared with bone tissue), and is very sensitive to impact solicitations. Thus, this work intended to study the possibility of incorporating the spinel phase (MgAl2O4) to this biomaterial, with the goal of increasing the fracture toughness using the expansion generated during the spinel forming reaction. The results didn’t allow for a direct comparison between the mechanical properties of pure hydroxyapatite and reinforced with spinel forming phases, due to the thermal degradation of hydroxyapatite. |
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