This study demonstrates improved dielectric properties and bone growth in hydroxyapatite–CeO2 composites, suggesting potential in biomaterials.
This study explores the fabrication and characterization of hydroxyapatite (HA)–CeO 2 composites via conventional solid‐state sintering. HA nanopowder was synthesized using the sol–gel method, and the effects of nano‐CeO 2 content on phase composition, microstructure, and bonding characteristics were analyzed through XRD (with Rietveld refinement using MAUD), SEM, and FTIR. Electrical, mechanical, and biological evaluations revealed that CeO 2 incorporation enhanced dielectric properties with frequency‐ and temperature‐dependent behavior. Mechanical performance improved significantly, with HA–2.5 wt.% CeO 2 achieving a Vickers hardness of 2.65 GPa, fracture toughness of 1.3 MPa·m 1/2 , and compressive strength of 43 MPa. In vitro studies confirmed the composites’ biodegradability and CeO 2 ’s positive effect on bone growth, supported by green/red fluorescence imaging. Bioactivity tests in simulated body fluid (SBF) showed apatite formation, verified by EDAX and elemental mapping. These results highlight the potential of HA–CeO 2 ceramics for bone tissue engineering applications.
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Hayati et al. (2025) studied this question.
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