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Structure of Carbonated Hydroxyapatite Based on Rietveld Method
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The crystalline structures of B-type carbonated hydroxyapatite (CHA) powders sintered at 700,
900 and 1100°C, respectively, were studied by Rietveld analysis of powder X-ray diffraction (XRD) data.
A series of structure parameters, including lattice parameters (a and c), bond length and the distortion
index of PO4 tetrahedron (Dind) were calculated by Rietveld method to characterize the fine structure of
CHA. The broadening effect of XRD reflections was separated to calculate the micro-strain and
crystalline size. The results showed that CHA become more stable with the increase of sintering
temperature, but the CO3
2- is almost lost at temperature of 1100°C. The quantitative results about crystal
structure of CHA based on crystalline structure simulated by Rietveld method are obtained.
Trans Tech Publications, Ltd.
Title: Structure of Carbonated Hydroxyapatite Based on Rietveld Method
Description:
The crystalline structures of B-type carbonated hydroxyapatite (CHA) powders sintered at 700,
900 and 1100°C, respectively, were studied by Rietveld analysis of powder X-ray diffraction (XRD) data.
A series of structure parameters, including lattice parameters (a and c), bond length and the distortion
index of PO4 tetrahedron (Dind) were calculated by Rietveld method to characterize the fine structure of
CHA.
The broadening effect of XRD reflections was separated to calculate the micro-strain and
crystalline size.
The results showed that CHA become more stable with the increase of sintering
temperature, but the CO3
2- is almost lost at temperature of 1100°C.
The quantitative results about crystal
structure of CHA based on crystalline structure simulated by Rietveld method are obtained.
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