Effect of Ca/P ratio of precursors on the formation of different calcium apatitic ceramics—An X-ray diffraction study

Abstract Biphasic ceramic mixtures of different hydroxyapatite and β-tricalciumphosphate (β-TCP) ratios and single phase β-TCP were prepared by a wet chemical process by adjusting the initial Ca/P ratios of the precursors under constant pH and temperature conditions. Increasing calcium deficiency led to a gradual increase in β-TCP content of the mixtures.

[1]  J. Lôpez,et al.  Fibrous growth of tricalcium phosphate ceramics. , 1997 .

[2]  P. N. Aza,et al.  Vibrational Properties of Calcium Phosphate Compounds. 1. Raman Spectrum of β-Tricalcium Phosphate , 1997 .

[3]  L. A. Sena,et al.  Influence of processing parameters on structural characteristics of porous calcium phosphate samples: a study using an experimental design method , 2005 .

[4]  F. Müller,et al.  Influence of magnesium doping on the phase transformation temperature of beta-TCP ceramics examined by Rietveld refinement. , 2005, Biomaterials.

[5]  Seong‐Hyeon Hong,et al.  Synthesis and dissolution behavior of β-TCP and HA/β-TCP composite powders , 2003 .

[6]  Masahiro Yoshimura,et al.  Processing and properties of hydroxyapatite-based biomaterials for use as hard tissue replacement implants , 1998 .

[7]  F. Korkusuz,et al.  An investigation of the chemical synthesis and high-temperature sintering behaviour of calcium hydroxyapatite (HA) and tricalcium phosphate (TCP) bioceramics , 1997, Journal of materials science. Materials in medicine.

[8]  A. Ransford,et al.  Synthetic porous ceramic compared with autograft in scoliosis surgery: A PROSPECTIVE, RANDOMISED STUDY OF 341 PATIENTS , 1998 .

[9]  G. Daculsi,et al.  Macroporous biphasic calcium phosphate ceramics: influence of macropore diameter and macroporosity percentage on bone ingrowth. , 1998, Biomaterials.

[10]  G. Daculsi,et al.  Biphasic calcium phosphates: influence of three synthesis parameters on the HA/beta-TCP ratio. , 2000, Journal of biomedical materials research.

[11]  D. Bernache-Assollant,et al.  Calcium phosphate apatites with variable Ca/P atomic ratio I. Synthesis, characterisation and thermal stability of powders. , 2002, Biomaterials.

[12]  P. Rouxhet,et al.  Temperature-programmed characterization of synthetic calcium-deficient phosphate apatites , 1989 .

[13]  S. Kannan,et al.  In Situ Formation and Characterization of Flourine-Substituted Biphasic Calcium Phosphate Ceramics of Varied F-HAP/β-TCP Ratios , 2005 .

[14]  S. Zec,et al.  The effect of temperature on the properties of hydroxyapatite precipitated from calcium hydroxide and phosphoric acid , 2001 .

[15]  Jürgen G. Heinrich,et al.  Synthesis and thermal behaviour of β tricalcium phosphate precipitated from aqueous solutions , 2003 .

[16]  J. P. LeGeros,et al.  Biphasic calcium phosphate bioceramics: preparation, properties and applications , 2003, Journal of materials science. Materials in medicine.