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Determination of stoichiometric Ca/P ratio in biphasic calcium phosphates using X-ray diffraction analysis

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2010, 20(2), pp.93-100
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

송용근 1 Donghyun Kim 2 Taewan Kim 3 KIM YANGDO 3 PARK,HONG-CHAE 3 Seog-Young Yoon 3

1부산대학교 재료공학부
2
3부산대학교

Accredited

ABSTRACT

The calcium to phosphate ratio (Ca/P) in biphasic calcium phosphates powders using X-ray diffraction analysis (XRD) was characterized. The BCP powders with various stoichiometric Ca/P molar ratio were synthesized with coprecipitation process and calcination. Compositions of the powders with Ca/P molar ratio between 1.5 and 1.67 were subjected to starting Ca/P molar ratio, pH = 10, and thermal treatment up to 900oC. The structural, morphological and chemical characterizations for BCP powders with stoichiometric Ca/P ratio were carried out with scanning electron microscope (SEM) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) and a phase quantification was investigated by XRD. The solubility of HAp, β-TCP, and BCP powders was tested in the phosphate buffer solution (PBS)at 36.5oC and pH = 7.4.

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