Mohammad Hossein Fathi
Articles written in Bulletin of Materials Science
Volume 38 Issue 5 September 2015 pp 1367-1374
In this study, a novel hydroxyapatite (HA)-coated forsterite scaffold with a desired porous structure, high mechanical properties and good bioactivity was successfully fabricated via gel-casting and sol–gel in low pressure methods. X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray map techniques were utilized in order to evaluate the phase composition, dimension, morphology, interconnectivity of the pores and state of the coating on the porosities of the synthesized scaffold. The porosity and compressive strength of the scaffolds were measured and the bioactivity was investigated by soaking the scaffolds in simulated body fluid (SBF). The results show that the prepared scaffolds had highly interconnected spherical pores with size in the range of 65–245 μm. Additionally, compressive strength and elastic modulus were 7.5 ± 0.2 and 291 ± 10 MPa, respectively. The crystallite size of the scaffolds was less than 60 nm. True (total) and apparent (interconnected) porosity of the scaffolds were in the range of 75–80 and 65–70%, respectively.
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