Paper Title:
Molecular and Crystal Structure Characterization of Calcium-Deficient Apatite
  Abstract

Calcium-deficient hydroxylapatite (CDHA) powders with Ca/P ratios from1.5 to 1.67 were synthesized by wet-chemical method. Rietveld structure refinement was performed on the X-ray diffraction data and Fourier transform infrared spectroscopy was used to characterize molecular and crystal structure of CDHA. With the decrease of Ca/P ratio, the crystallite size and crystallinity decreased, but the acid phosphate content and amount of vacancies in hydroxyapatite hexagonal structure increased. The disorder of CDHA structure increase indicated calcium-deficiency and HPO4 replacement resulted in disorder of crystal in apatite structure. The more calcium is deficient, the more disorder or imperfect in CDHA structure

  Info
Periodical
Key Engineering Materials (Volumes 330-332)
Main Theme
Edited by
Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu
Pages
119-122
DOI
10.4028/www.scientific.net/KEM.330-332.119
Citation
H. H. Zhou, H. Li, L. H. Guo, "Molecular and Crystal Structure Characterization of Calcium-Deficient Apatite", Key Engineering Materials, Vols. 330-332, pp. 119-122, 2007
Online since
February 2007
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$32.00
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