Silicon nitride-Bioglass (R) composite for biomedical applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

José Domingos Santos (Autor) FEUP; M. Amaral (Autor) Outra; S. M. Oliveira (Autor) Outra; Maria Ascensão Lopes (Autor) FEUP; R. F. Silva (Autor) Outra

Revista

Título: Bioceramics

Vol. 192-1

Páginas: 589-592

Indexação

ISI Web of Knowledge - 7 Citações

Scopus - 6 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia dos materiais

Outras Informações

ID Authenticus: P-001-16E

DOI: 10.4028/www.scientific.net/KEM.192-195.589

Abstract (EN): This study aimed at preparing novel highly toughened bioactive ceramic composite composed of Si3N4 matrix and Bioglass (R) using a hot pressing technique. Densification rate, hardness and fracture toughness of this novel composite were assessed as well as in vitro bioactivity using a simulated body fluid (SBF). A fracture toughness of 5.2 +/-0.3 MPa.m(1/2) was achieved for fully densified samples, which complies with K-1c value reported for cortical bone. This novel composite, which can be used in high load medical applications, seems to overcome the drawback of low fracture toughness presented by most currently available bioactive ceramics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4