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AuthorMusharavati, Farayi
AuthorJaber, Fadi
AuthorNasor, Mohamed
AuthorSarraf, Masoud
AuthorNezhad, Erfan Zal
AuthorUzun, Kaan
AuthorMa, Ye
AuthorBae, Sungchul
AuthorSingh, Ramesh
AuthorChowdhury, Muhammad E.H.
Available date2023-04-17T06:57:40Z
Publication Date2023
Publication NameCeramics International
ResourceScopus
URIhttp://dx.doi.org/10.1016/j.ceramint.2022.10.218
URIhttp://hdl.handle.net/10576/41924
AbstractThis study examined the mechanical properties, wettability, and tribology of hydroxyapatite (HA)–zirconia (ZrO2)–carbon nanotube (CNTs) ceramic nanocomposites (with various CNT ratios (x): 1, 5, and 10 wt%). HA–ZrO2–CNT-x powders were hydrothermally synthesized. Hot isostatic pressing (HIP) and cold isostatic pressing were used to manufacture solid and dense tablets; consolidation was performed by sintering the nanocomposites under Ar gas at 1150 °C during HIP. The microstructure and morphology of the nanocomposites were characterized via transmission electron microscopy, energy-dispersive X-ray spectroscopy, powder X-ray diffractometry, Fourier transform infrared (FTIR), and scanning electron microscopy. The effects of ZrO2 and CNTs on the mechanical characteristics of the nanocomposites were examined via nanoindentation, reciprocating wear, and Vickers hardness tests. The microhardness of HA–ZrO2–CNT-1% and HA–ZrO2–CNT-5% increased by 36.8% and 66.67%, respectively, compared with that of pure HA. The nanohardness of the HA–ZrO2–CNT-1%, HA–ZrO2–CNT-5%, and HA–ZrO2–CNT-10% samples was 8.3, 9.65, and 8.02 Gpa, and the corresponding elastic modulus was 83.72, 114.34, and 89.27 GPa, respectively. Both of these parameters were higher than those of pure HA. However, in the nanocomposite reinforced with 10% CNT, as opposed to those with lower CNT ratios, their values were lower. Additionally, HA–ZrO2–CNT-10% was the most hydrophilic nanocomposite synthesized in this study with a contact angle of 48.8°.
SponsorThis work was supported by the National Research Foundation of Korea (grant number NRF-2020R1A4A1019074 ), Qatar National Research Fund, Qatar Foundation , Doha, Qatar (grant number NPRP11S-0102-180178 ), and Ajman University (grant agreement 2021-IRG-ENIT-12).
Languageen
PublisherElsevier
SubjectCarbon nanotube
Hydroxyapatite
Nanoindentation
Wear resistance
Wettability
Zirconia
TitleMicromechanical properties of hydroxyapatite nanocomposites reinforced with CNTs and ZrO2
TypeArticle
Pagination7466-7475
Issue Number5
Volume Number49
dc.accessType Abstract Only


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