Nordström E G, Yokobori A T, Yokobori T, Aizawa Y
Department of Materials Science and Engineering, Teikyo University, Utsunomiya, Japan.
Biomed Mater Eng. 1998;8(1):37-43.
By using the fracture toughness estimation method based on two-dimensional map, it was found that the ductility of the high porosity hydroxyapatite/mice composite was comparable with silicon carbide. It was measured to be higher than that of packed hydroxyapatite. Alumina ceramics with more than 96% aluminium 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.
通过使用基于二维图的断裂韧性估算方法，发现高孔隙率羟基磷灰石/小鼠复合材料的延展性与碳化硅相当。经测量，其延展性高于致密羟基磷灰石。氧化铝含量超过96%的氧化铝陶瓷显示出比该复合材料更高的断裂韧性。当比较弯曲强度时，该复合材料的强度比致密羟基磷灰石低两到三倍，且远低于其他研究材料。该复合材料具有高孔隙率，这反过来使其弯曲强度较低。然而，高孔隙率对生物相容性更有利。
