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J. Korean Ceram. Soc. > Volume 32(7); 1995 > Article
Journal of the Korean Ceramic Society 1995;32(7): 858.
인산염계 다공질 결정화 유리에 관한 연구
박용완, 현부성1, 김태호
한양대학교 무기재료공학과
A Study on the Porous Glass-Ceramics in the Phosphate System
A porous glass-ceramics body was prepared in the phosphate system. The glass composition of 47.2CaO-22.2TiO2-30.6P2O5 (mol%) containing a few weight percent of ZrO2 was suitable for a mother glass of a porous glass-ceramics. The dense glass-ceramics body was made by a two-step heat treatment of the mother glass. The crystalline phases of the glass-ceramics were $beta$-Ca3(PO4)2 and CaTi4(PO4)6. The $beta$-Ca3(PO4)2 phase could be selectively leached out with HCl solution and thus a crystalline $beta$-Ca3(PO4)2 skeleton was remained. The dimension and shape of the porous glass-ceramics were nearly the same as the those of the first formed glass. The specific surface area and average proe radius of the porous glass-ceramics were 19$m^2$/g and 22 nm, respectively.
Key words: Phosphate, Porous glass-ceramics, Leaching
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