Synergistic effects of ZnO on the hardness, photon, and neutron attenuation characteristics of Apatite-Wollastonite glass-ceramics
Source abstract
Abstract
Four Apatite-Wollastonite (AW) doped with 0, 5, 10, and 20 wt% of ZnO have been prepared via powder metallurgy for bioactive functionality. The glass-ceramic density showed enhancement with ZnO addition from 2.79 g/cm3 to 3.14 g/cm3. The obtained hardness from the Vickers method showed enhancement from 568 to 608 HV for the undoped and the doped 20 wt% ZnO addition. The scanning electronic microscope (SEM) and Energy Dispersive spectroscopy (EDS) showed increased crystallinity and decreased porosity with increasing ZnO addition. The nuclear radiation shielding properties obtained via GEANT4 and Phy-X/PSD showed a good agreement. The mass attenuation coefficient (MAC) increased from 14.365 to 23.987 cm2/g and the linear attenuation coefficient (LAC) increased from 40.078 cm−1 to 75.318 cm−1 for the undoped and 20 wt% doped with ZnO at 0.015 MeV. The mean free path (MFP) decreased from 0.025 to 0.013 cm. The bioactive glass-ceramic doped with 20 wt% ZnO exhibits a higher fast neutron removal cross-section (FNRCS) of 0.0915 cm−1 greater than some bioactive glass-ceramics. These results suggest that the as-prepared glass-ceramic doped with ZnO enhances mechanical hardness, photon, and as well FNRCS making it a good candidate for orthopedic and dental applications. © 2025 Elsevier Ltd and Techna Group S.r.l.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Radiation Shielding Materials Analysis · Glass properties and applications · Nuclear materials and radiation effects
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