繊維状アパタイトの焼結による制御された開放気孔を有する多孔質セラミックスの作製

概要

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Porous hydroxyapatite (Ca_<10>(PO_4)_6(OH)_2;HAp) ceramics with various porosity values were fabricated by sintering fibrous HAp particles prepared from the aqueous solutions in the Ca(NO_3)_2-(NH_4)_2HPO_4-(NH_2)_2CO-HNO_3 system by the homogeneous precipitation method using urea. The total porosities, total pore volumes, median pore sizes and specific surface areas of the resulting ceramics were controlled in the range of 16.7 to 55.0%, 0.04 to 0.36 cm^3・g^<-1>0.28 to 0.78 μm and 0.29 to 2.90 m^2・g^<-1>respectively, by changing the compaction pressures (20, 30 and 40 MPa) and firing temperatures (1000℃, 1100℃, 1200℃ and 1300℃).Most of the pores in the resulting ceramics were regarded as the open pores.
社団法人日本セラミックス協会の論文
2000-03-01