Effects of Al_2O_3 Addition in Glass Composition on the Mechanical Properties of A/W Glass-Ceramic

摘要

The effect of Al_2O_3 addition on the mechanical properties of CaO-SiO_2-P_2O_5 glass ceramic was investigated. By addition of Al_2O_3, fracture toughness has been increased up to 3.34 MPa m~(1/2). Bending strength has been decreased compared to Cerabone~(~R) due to too low sintered density. Bioactivity of the glass also seem to be restrained due to the addition of Al_2O_3. No bone-like apatite was formed after immersion in SBF(Simulated Body Fluid) even for 60 days.