Fabrication of Apatite Monolith from Calcium Sulphate


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Present study evaluated the feasibility of apatite monolith preparation from calcium sulfate monolith using ammonium phosphate solution. We found that calcium phosphate monolith transforms to apatitic monolith without changing its original morphology when a proper temperature and a proper phosphate solution was selected. Prepared apatite was B-type carbonate apatite with low crystallinity. Although mechanical strength of the apatite monolith was lower than original calcium sulphate monolith, we concluded present method may be useful for the fabrication of apatite monolith since we can prepare different shape of apatite monoliths based on the setting reaction of calcium sulphate and compositional transformation to apatitic mineral.



Key Engineering Materials (Volumes 288-289)

Edited by:

Xingdong Zhang, Junzo Tanaka, Yaoting Yu and Yasuhiko Tabata




I. Kunio et al., "Fabrication of Apatite Monolith from Calcium Sulphate", Key Engineering Materials, Vols. 288-289, pp. 533-536, 2005

Online since:

June 2005




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[1] [2] [3] [4] [5] [6] [7] 0 5 10 15 20 25 DTS (MPa) Reaction Time (hours) NH4H2PO4NH4H2PO4NH4H2PO4 (NH4)2HPO4 (NH4)3PO4 Fig. 4 Time course of the diametral tensile strength (DTS) of calcium sulphate monolith when treated with 1mol/L NH4H2PO4, (NH4)2HPO4 or (NH4)3PO4 at 100°C.

DOI: https://doi.org/10.5586/asbp.1938.009