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Effects of Mg‐Doping and of Reinforcing Multiwalled Carbon Nanotubes Content on the Structure and Properties of Hydroxyapatite Nanocomposite Ceramics |
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| Authors: | Meriame Bricha Younes Belmamouni Khalil El Mabrouk José M F Ferreira |
| Affiliation: | 1. NANOTECH, Institute of Nanomaterials and Nanotechnology, MAScIR, Moroccan Foundation for Advanced Science, Innovation and Research, Madinat El Irfane, Rabat, Morocco;2. Department of Materials and Ceramics Engineering, CICECO, University of Aveiro, Aveiro, Portugal |
| Abstract: | Surfactant‐assisted hydrothermal synthesis of magnesium‐doped hydroxyapatite (Ca10?xMgx(PO4)6(OH)2) with 0 ≤ x ≤ 1) was realized in aqueous solution at 90°C. β‐TCP phase was formed in the Mg0.6‐HA sample after heat treatment at 1000°C. Magnesium was found to degrade the sintering ability of Mgx‐HA ceramics. Flexural strength (σf) was found to decrease as a function of Mg‐doped HA. The using of carbon nanotubes as reinforcing agents mitigated the strength loss of Mg‐HA ceramics. The flexural strength of Mg0.6‐HA was then increased by nearly 20% from approximately 33 to 39 MPa with an optimum addition of 3 wt% of multi‐walled nanotubes. |
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