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. 2014 Jul 28;4:5843. doi: 10.1038/srep05843

Figure 2.

Figure 2

(A) XRD patterns of FBCBs from proximal end, after heat-treatments at 750 (Nevi blue), 900 (Green), and 1000 (Red)°C with crystallite dimensions (insets). The crystal shape becomes equiaxed at temperatures 900 and 1000°C as the aspect ratio becomes nearly 1 from the ratio of 0.6891 at 750°C. Areas under the whole curves are computed to evaluate the crystallinity; (B) An enlarged part of a selected important XRD peaks of the samples P750, P900 and P1000; (C) Change in crystallite size (Open square – distal, Open circle – middle and Open triangle – proximal) and crystallinity (Filled square – distal, Filled circle – middle and Filled triangle – proximal) of FBCBs before and after heat-treatments at 120, 350, 500, 750, 900 and 1000°C, as evaluated from XRD patterns. Crystallite size increases with temperature and it is more significant above 500°C, while above 750°C, the change in crystallinity is very slow in all the samples derived from three different sections of bovine-femur; and (D) relationship between c⊥(002)/a⊥(200) ratio and sintering temperature (Purple filled circle) with experimental error (Green bar). The crystal formation of pure HA phase from FBCB is significant only at, or above, 500°C.