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Int. J. Mol. Sci. 2012, 13(10), 13569-13586; doi:10.3390/ijms131013569
Article

The Properties of Sintered Calcium Phosphate with [Ca]/[P] = 1.50

1
, 2
, 3
 and 4,*
Received: 18 August 2012; in revised form: 10 October 2012 / Accepted: 15 October 2012 / Published: 22 October 2012
(This article belongs to the Section Material Sciences and Nanotechnology)
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Abstract: In order to obtain the properties of the sintered as-dried calcium phosphate with [Ca]/[P] = 1.50, the characteristics of sintered pellets have been investigated using X-ray diffraction (XRD), inductively coupled plasma-mass spectrometry (ICP-MS), Fourier-transform infrared (FT-IR) spectra, Vickers hardness indentation and scanning electron microscopy (SEM). When the pellet samples were sintered between 700 °C and 1200 °C for 4 h, the hydroxyapatite (Ca10(PO4)6(OH)2, HA) still maintained the major phase, accompanied with the rhenanite (NaCaPO4) as the secondary phase and β-tricalcium phosphate (β-Ca3(PO4)2, β-TCP) as the minor phases. In addition, the HA partially transformed to α-tricalcium phosphate (α-Ca3(PO4)2, α-TCP) and tetracalcium phosphate (Ca4(PO4)2O, TTCP), when the pellet samples were sintered at 1300 °C and 1400 °C, respectively, for 4 h. The maximum density and Vickers Hardness (HV) of sintered pellet samples were 2.85 g/cm3 (90.18% theoretical density (T.D.)) and 407, which appeared at 1200 °C and 900 °C, respectively.
Keywords: sintered; calcium phosphate; hydroxyapatite; density; hardness; microstructure sintered; calcium phosphate; hydroxyapatite; density; hardness; microstructure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Hung, I.-M.; Shih, W.-J.; Hon, M.-H.; Wang, M.-C. The Properties of Sintered Calcium Phosphate with [Ca]/[P] = 1.50. Int. J. Mol. Sci. 2012, 13, 13569-13586.

AMA Style

Hung I-M, Shih W-J, Hon M-H, Wang M-C. The Properties of Sintered Calcium Phosphate with [Ca]/[P] = 1.50. International Journal of Molecular Sciences. 2012; 13(10):13569-13586.

Chicago/Turabian Style

Hung, I-Ming; Shih, Wei-Jen; Hon, Min-Hsiung; Wang, Moo-Chin. 2012. "The Properties of Sintered Calcium Phosphate with [Ca]/[P] = 1.50." Int. J. Mol. Sci. 13, no. 10: 13569-13586.



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