Glass-reinforced hydroxyapatite composites: fracture toughness and hardness dependence on microstructural characteristics

• Tipo: Artigo em Revista Científica Internacional
• Data: 1999

Autores

Lopes, MA (Autor) Outra; Monteiro, FJ (Autor) FEUP; Santos, JD (Autor) FEUP

Revista

Título: Biomaterials

Vol. 20 Nº 21

Páginas: 2085-2090

ISSN: 0142-9612

Editora: Elsevier

Indexação

ISI Web of Knowledge - 100 Citações

ISI Web of Science

Scopus - 119 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Biotecnologia ambiental

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia de biomateriais ; Ciências Tecnológicas > Tecnologia > Biotecnologia

Outras Informações

ID Authenticus: P-001-2WM

DOI: 10.1016/s0142-9612(99)00112-x

Abstract (EN): Fracture toughness and hardness properties of CaO-P2O5 glass-reinforced hydroxyapatite composites have been assessed using indentation techniques and results calculated according to Laugier and Evans' equations. Both properties showed to be dependent upon several microstructural characteristics, namely residual porosity and the percentage of secondary beta and alpha tricalcium phosphate phases in the structure of the composites. Composites presented a Palmqvist-type indentation crack system, which is the specific crack system addressed by Laugier's approach. Fracture toughness determinations according to Evan's equation, which is a universal one and adapted to both median and Palmqvist crack systems, did not correlate well with Laugier determinations.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6