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Study the structure of hydroxapatite reinforced by carbon nanotube coated Ti alloy

Hamdi, D.A. (2018) Study the structure of hydroxapatite reinforced by carbon nanotube coated Ti alloy. International Journal of Mechanical Engineering and Technology, 9 (9). pp. 1010-1021.


The excellent biocompatibility properties of hydroxyapatite (HAp) which similar to the most chemical composition of tissue and meets the requirement of materials designed for bone substitute purpose. Due to the poor mechanical properties of HAp, the Multi walled carbon nanotubes MWCNTs (purity 99.0%and Outside Diameter 10 nm) were used to reinforcement HAp matrix. 1.0g nano powder HAp (with purity 99.0%and particle size 40 nm) was composite with 0.25ml PVA polymer and 0.03 ml P2H7O4. The two concentrations of CNTs (0.5g and 1.0g) were added for composite solution HAp with PVA polymer and P2H7O4.The cold spray technical was used for coating the substrate cpTi alloy by using Nano composites solution. Topography of the coated film was analyzed using optical microscopy and SEM, the aggregation was reduce, the porosity and gaps was clear on the surface coated at percent CNTs with range of diameter of CNTs (D=64.56-83.27 nm). Also, CNTs increased crystallinity of HAp from increasing in the intensity of peaks for XRD analysis. The P2H7O4 work as disoriented material, the presence of PVA polymer with HAp/CNTs composite work to cover each atoms of composites at alone and then help for lineding up of HAp crystals along CNTs surface with uniform distribution. The AFM result shows the composite of HAp nanoparticles contact of the CNTs with 1.0g Wight were increased from the surface roughness to(15.2nm).The in vetro test samples was investigated by immersion technique for samples in SBF. The apatite growth with many layers take different shapes have gapes with diameter 1.18m, the increasing in the concentration of CNTs have excellent bio-mineralization capability.

Item Type: Journal Article
Murdoch Affiliation(s): School of Engineering and Information Technology
Publisher: IAEME Publication
Copyright: © IAEME Publication
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