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Effects of M g‐Doping and of Reinforcing Multiwalled Carbon Nanotubes Content on the Structure and Properties of Hydroxyapatite Nanocomposite Ceramics
Author(s) -
Bricha Meriame,
Belmamouni Younes,
El Mabrouk Khalil,
Ferreira José M. F.
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12178
Subject(s) - materials science , nanocomposite , flexural strength , sintering , carbon nanotube , ceramic , doping , chemical engineering , aqueous solution , hydrothermal circulation , pulmonary surfactant , carbon fibers , phase (matter) , composite number , composite material , nuclear chemistry , organic chemistry , chemistry , optoelectronics , engineering
Surfactant‐assisted hydrothermal synthesis of magnesium‐doped hydroxyapatite ( C a 10− x M g x ( PO 4 ) 6 ( OH ) 2 ) with 0 ≤ x ≤ 1) was realized in aqueous solution at 90°C. β‐ TCP phase was formed in the M g 0.6 ‐ HA sample after heat treatment at 1000°C. Magnesium was found to degrade the sintering ability of M g x ‐ HA ceramics. Flexural strength (σ f ) was found to decrease as a function of M g‐doped HA . The using of carbon nanotubes as reinforcing agents mitigated the strength loss of M g‐ HA ceramics. The flexural strength of Mg 0.6 ‐ 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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