Abstract:
Porous alumina-calcium phosphate (CaP) composites have been prepared through protein
foaming-consolidation method using egg yolk as the pore creating agent. The effect of yolk addition on
physical and mechanical properties of porous bodies was investigated. The slurries were made by mixing
alumina and CaP powders with yolk and starch. After drying, green bodies were burned at at 600°C for 1 h,
followed by sintering at temperatures of 1400°C for 2 h. The porous alumina-CaP bodies with pore size in
the range of 5o – 600 μm was obtained.The both density and shrinkage of sintered bodies increased from
2.23 to 2.78 g/cm3 and 78.8 to 95.6 vol.% respectively when yolk amount increased from 24 to 64 g. The
compressive strength was found in the range of 20.3 – 68.5 MPa at 30 - 43.9% porosities
