TY - JOUR
T1 - Fracture toughness of hydroxyapatite/mica composite, packed hydroxyapatite, alumina ceramics, silicon nitride and -carbide
AU - Nordström, E. G.
AU - Yokobori, Toshimitsu
AU - Yokobori, T.
AU - Aizawa, Y.
PY - 1998/12/1
Y1 - 1998/12/1
N2 - By using the fracture toughness estimation method based on two- dimensional map, it was found that the ductility of the high porosity hydroxyapatite/mica composite was comparable with silicon carbide. It was measured to be higher than that of packed hydroxyapatite. Alumina ceramics with more than 96% aluminum oxide showed a higher fracture toughness than the composite material. When bending strength was compared, the strength of the composite was two or three times lower than that of packed hydroxyapatite and much lower than the other studied materials. The composite material showed high porosity, which in turn gives it a lower bending strength. However, the high porosity is more favourable for biocompatibility.
AB - By using the fracture toughness estimation method based on two- dimensional map, it was found that the ductility of the high porosity hydroxyapatite/mica composite was comparable with silicon carbide. It was measured to be higher than that of packed hydroxyapatite. Alumina ceramics with more than 96% aluminum oxide showed a higher fracture toughness than the composite material. When bending strength was compared, the strength of the composite was two or three times lower than that of packed hydroxyapatite and much lower than the other studied materials. The composite material showed high porosity, which in turn gives it a lower bending strength. However, the high porosity is more favourable for biocompatibility.
KW - Ceramic
KW - Composites
KW - Fracture toughness
KW - Hydroxy(1)apatite
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M3 - Article
C2 - 9713684
AN - SCOPUS:0032448467
VL - 8
SP - 37
EP - 43
JO - Bio-Medical Materials and Engineering
JF - Bio-Medical Materials and Engineering
SN - 0959-2989
IS - 1
ER -