Paper Title:
Microstructural Observation of Calcium-Deficient Single Crystal Apatite Fibers and Phase Changes during Heating
  Abstract

Three types of calcium-deficient apatite fibers (Ca-def AF) were synthesized by a homogeneous precipitation method using starting solution with Ca/P ratios of 1.00, 1.50 and 1.67, and then the resulting fibers were characterized by XRD, FT-IR and SEM. Especially, the microstructure including strain and defect of individual Ca-def AF was examined by transmission electron microscopy (TEM). All the resulting Ca-def AFs had a single phase of apatite, and contained carbonate ions. These fibers were of single crystal, and highly strained. However, when Ca-def AFs were heated to higher than 800 °C, they changed to HAp and TCP biphases. The content of the carbonate group in the Ca-def AFs decreased with heating temperature.

  Info
Periodical
Key Engineering Materials (Volumes 361-363)
Main Theme
Edited by
Guy Daculsi and Pierre Layrolle
Pages
147-150
DOI
10.4028/www.scientific.net/KEM.361-363.147
Citation
A. Taki, H. Yoshimura, M. Aizawa, "Microstructural Observation of Calcium-Deficient Single Crystal Apatite Fibers and Phase Changes during Heating", Key Engineering Materials, Vols. 361-363, pp. 147-150, 2008
Online since
November 2007
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$32.00
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