TEM Observation of Heat-Treated β-Tricalcium Phosphate Powder and its Precursor Obtained by Mechanochemical Reaction

Abstract:

Mechanical and biological functions of b-tricalcium phosphate (b-TCP) ceramics is of importance with respect to medical application such as bone graft substitute. The degrees of crystallynity and morphology of as-prepared b-TCP powders are concerned with the above functions. Mechanochemical synthesis is a process of producing a fine particle of b-TCP through an intermediate phases (precursor) of calcium phosphate. The b-TCP precursor synthesized by mechanochemical reaction, followed by heat-treatment, was analysed by using transmission electron microscopy, X-ray diffraction and Fourier transformation infrared spectroscopy. The hydrate layer and carbonate ions involved in the precursor were found to affect the degrees of crystallinity and morphology of as-prepared b-TCP particles at a certain temperature, 700 °C. The specific characteristics of crystallinity and morophology of as-prepared b-TCP particle is expected to be favorble to forming and sintering of b-TCP ceramics.

• Periodical: Key Engineering Materials (Volume 758)
• Pages: 184-188
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.758.184
• Online since: November 2017
• Authors: Atsumasa Shishido*, Yoshiyuki Yokogawa
• Keywords: Bone Graft Substitute, Calcium Phosphate Ceramics, Hydrate Layer, Mechanochemical Reaction, Transmission Electron Microscopy (TEM)

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