Novel approach to sintering hydroxyapatite-alumina nanocomposites at 300 degrees C

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This work showed that the cold sintering process can resolve high-temperature sintering problems that deteriorate mechanical and functional properties. Potential biomedical materials like alumina-hydroxyapatite nanocomposites can decompose into unwanted phases at high temperatures, which reduces their biomedical properties. In this study, hydroxyapatite reinforced with up to 45 wt% nano-alumina was successfully sintered using cold sintering at a temperature as low as 300 degrees C. The nanocomposites showed significant hardness (similar to 3 GPa) and full densification without any decomposition or interfacial reactions. Plasma protein adsorption tests revealed the adherence of proteins on the surface of the cold-sintered samples, showing an improved osseointegration behavior in the nano-composites.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2021-02
Language
English
Article Type
Article
Citation

MATERIALS CHEMISTRY AND PHYSICS, v.260

ISSN
0254-0584
DOI
10.1016/j.matchemphys.2020.124187
URI
http://hdl.handle.net/10203/281629
Appears in Collection
NE-Journal Papers(저널논문)
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