Iranian materials engineers have increased the flexural strength and toughness of hydroxyapatite pieces by using oxide nanoparticles compatible with the body.
The synthesis of nanocomposites was similar to the mechanism that takes place inside the body,
The aim of the research was to produce a nanocomposite powder and nanocomposite objects based on hydroxyapatite that were strengthened with aluminum and titanium oxide nanoparticles.
The nanoparticles improve mechanical properties of the produced objects, including their flexural strength and toughness, and cause hydroxyapatite to decompose at higher temperatures. It enables the sintering of hydroxyapatite at higher temperatures to obtain higher density and strength.
Among the most important achievements of the plan, mention can be made of a significant increase in flexural strength up to about 27 percent in the sample modified with titania, and about 40 percent in the sample modified with alumina.
The toughness of these pieces increased 100 percent in comparison with the pure nanostructure hydroxyapatite sample.
Taking into account the importance of hydroxyapatite as the main component of bone materials, the research can have a good foresight into medical engineering and biomaterials applications.
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