TY - JOUR
T1 - Effect of molding pressure on fabrication of low-crystalline calcite block
AU - Lin, Xin
AU - Matsuya, Shigeki
AU - Nakagawa, Masaharu
AU - Terada, Yoshihiro
AU - Ishikawa, Kunio
N1 - Funding Information:
Acknowledgments This study was supported in part by a Grant-in-aid for Scientific Research from the Ministry of Education, Sports, Culture, Science, and Technology, Japan.
PY - 2008/2
Y1 - 2008/2
N2 - We have reported that low-crystalline porous calcite block, which is useful as a bone substitute or a source material to prepare apatite-type bone fillers could be fabricated by exposing calcium hydroxide compact to carbon dioxide gas saturated with water vapor. In the present study, we investigated the effect of molding pressure on the transformation of calcium hydroxide into calcite and the mechanical strength of the carbonated compact. Transformation into calcite was almost completed within 72 h, however, a small amount of Ca(OH)2 still remained unreacted at higher molding pressure because of incomplete penetration of CO2 gas into the interparticle space due to dense packing of Ca(OH)2 particles. On the other hand, high molding pressure resulted in an increase in diametral tensile strength (DTS) of the calcite compact formed. Critical porosity of the calcite block was calculated as approximately 68%.
AB - We have reported that low-crystalline porous calcite block, which is useful as a bone substitute or a source material to prepare apatite-type bone fillers could be fabricated by exposing calcium hydroxide compact to carbon dioxide gas saturated with water vapor. In the present study, we investigated the effect of molding pressure on the transformation of calcium hydroxide into calcite and the mechanical strength of the carbonated compact. Transformation into calcite was almost completed within 72 h, however, a small amount of Ca(OH)2 still remained unreacted at higher molding pressure because of incomplete penetration of CO2 gas into the interparticle space due to dense packing of Ca(OH)2 particles. On the other hand, high molding pressure resulted in an increase in diametral tensile strength (DTS) of the calcite compact formed. Critical porosity of the calcite block was calculated as approximately 68%.
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U2 - 10.1007/s10856-006-0028-7
DO - 10.1007/s10856-006-0028-7
M3 - Article
C2 - 17607521
AN - SCOPUS:39049093854
SN - 0957-4522
VL - 19
SP - 479
EP - 484
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 2
ER -