Fabrication of βTCP Foam Using αTCP Foam as a Precursor by Heat Treatment
The present study reports the synthesis of βTCP foam with fully interconnecting pores based on phase transformation of αTCP foam precursor by employing heat treatment. First, the αTCP foam precursor was fabricated by sintering the ceramics slurry-coated polyurethane foam template at 1,500°C. The resultant αTCP foam was again heated below α,β transition temperature for an extended period of times. After heating at 800°C for 150 hours, 900°C for 100 hours and 1,000°C for 300 hours, βTCP foam was obtained. The compressive strength of βTCP foam was approximately 46 kPa and the porosity was approximately 93%. The long heating period as well as heating temperature were the key to the transformation of βTCP phase. βTCP foam could be an ideal bone replacement since the invasion of bone cells into the pores provides optimum bone growth or repair.
Kunio Ishikawa and Yukihide Iwamoto
T. Nikaido et al., "Fabrication of βTCP Foam Using αTCP Foam as a Precursor by Heat Treatment", Key Engineering Materials, Vols. 529-530, pp. 15-18, 2013