Publication Date:
2011-07-05
Description:
A study of the sub-system Ca 2 SiO 4 –7CaOP 2 O 5 2SiO 2 within the system Ca 3 (PO 4 ) 2 –Ca 2 SiO 4 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% Ca 3 (PO 4 ) 2 and 69 wt% Ca 2 SiO 4 , 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% Ca 3 (PO 4 ) 2 and 63.25 wt% Ca 2 SiO 4 .
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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