The System Ca3(PO4)2-Ca2SiO4: The Sub-System Ca2SiO4-7CaOP2O52SiO2

A study of the sub‐system Ca2SiO4–7CaOP2O52SiO2 within the system Ca3(PO4)2–Ca2SiO4 was conducted as a preliminary step toward obtaining new biomaterials with controlled microstructures. Phase composition of the resulting ceramics was studied using X‐ray diffraction and scanning electron microscopy...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2011-12, Vol.94 (12), p.4459-4462
Main Authors: Rubio, Virtudes, de la Casa-Lillo, Miguel A., De Aza, Salvador, De Aza, Piedad N.
Format: Article
Language:English
Subjects:
Biomedical materials
Ceramics
Diffraction
Eutectoid composition
Eutectoid temperature
Eutectoids
Invariants
Microstructure
Surgical implants
Wavelengths
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Summary:A study of the sub‐system Ca2SiO4–7CaOP2O52SiO2 within the system Ca3(PO4)2–Ca2SiO4 was conducted as a preliminary step toward obtaining new biomaterials with controlled microstructures. Phase composition of the resulting ceramics was studied using X‐ray diffraction and scanning electron microscopy with attached wavelength dispersive spectroscopy. The results showed that the sub‐system presents an invariant eutectoid point at 518°C ± 6°C with a composition of 31 wt% Ca3(PO4)2 and 69 wt% Ca2SiO4, and typical eutectoid microstructure of lamellae morphology. These results are in disagreement with the previous reported data, which locate the invariant eutectoid point at 500 ± 20°C with a composition of 36.75 wt% Ca3(PO4)2 and 63.25 wt% Ca2SiO4.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2011.04716.x