Effect of molding pressure on fabrication of low-crystalline calcite block

Xin Lin, Shigeki Matsuya, Masaharu Nakagawa, Yoshihiro Terada, Kunio Ishikawa

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

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%.

Original languageEnglish
Pages (from-to)479-484
Number of pages6
JournalJournal of Materials Science: Materials in Medicine
Volume19
Issue number2
DOIs
Publication statusPublished - Feb 1 2008

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Compression molding
Calcium Carbonate
Calcite
Crystalline materials
Pressure
Fabrication
Calcium Hydroxide
Hydrated lime
Bone
Gases
Bone Substitutes
Apatites
Tensile Strength
Porosity
Steam
Apatite
Carbon Dioxide
Water vapor
Strength of materials
Fillers

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Bioengineering
  • Chemical Engineering(all)

Cite this

Effect of molding pressure on fabrication of low-crystalline calcite block. / Lin, Xin; Matsuya, Shigeki; Nakagawa, Masaharu; Terada, Yoshihiro; Ishikawa, Kunio.

In: Journal of Materials Science: Materials in Medicine, Vol. 19, No. 2, 01.02.2008, p. 479-484.

Research output: Contribution to journalArticle

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