ABSTRACT
Porous ceramics for use as biological support materials have been made by casting a melt in the Na2O-CaO-P2O5-TiO2-SiO2 system followed by leaching in HCl. The melt crystallised upon cooling forming a three phase material comprised of a sodium-calcium-phosphate phase, titania (rutile) and amorphous silica. Acid leaching removed the sodium-calcium-phosphate phase leaving a continuous porous network of titania and silica. Average pore diameters are of the order of 2–3 μm with a corresponding surface area of 90 m2/g.
