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http://dx.doi.org/10.4191/kcers.2013.50.4.275

Precipitation of Calcium Phosphate at pH 5.0 for the β Tri-calcium Phosphate Cement  

Chang, Myung Chul (Department of Materials Science and Engineering, Kunsan National University)
Publication Information
Journal of the Korean Ceramic Society / v.50, no.4, 2013 , pp. 275-279 More about this Journal
Abstract
The purpose of this study was to prepare calcium phosphate cement [CPC] for use in artificial bone. Nano-crystalline calcium phosphate [CaP] was precipitated at $37^{\circ}C$ using highly active $Ca(OH)_2$ in DI water and an aqueous solution of $H_3PO_4$. From the XRD measurements, the nano-CaP powder was close to apatitic TCP phase and the powders fired at $800^{\circ}C$ showed a critical ${\beta}$-TCP phase. A mixture of one mole $CaCO_3$ and two moles di-calcium phosphate was calcined at $1100^{\circ}C$ to make a reference ${\beta}$-TCP material. The nano-CaP powders were added to the normal ${\beta}$-TCP matrix and fired at $900^{\circ}C$ to make a ${\beta}$-TCP block. The sintered block showed improved mechanical strength, which was caused by the solid state interaction between nano-CaP and normal ${\beta}$-TCP.
Keywords
Tricalcium phosphate; Bone cement; Nano-Particles; Precipitation; Solid state interaction;
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