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Volume 6
Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212
Ceramics 2018
May 14-15, 2018
May 14-15, 2018 | Rome, Italy
4
th
International Conference and Expo on
Ceramics and Composite Materials
Development and characterization of Hydroxyapatite-Alumina- Zrirconia biocomposites for
orthopedic implants
Said Laasri
1
, Mohamed Es-Saddik
2
, Mohamed Taha
3
, Abdelwahed Hajjaji
4
, Abdelaziz Laghzizil
5
and
E. K. Hlil
6
1,4
Chouaib-Doukkali University, Morocco
2,3
Ibn Zohr University, Morocco
5
Mohammed V University, Rabat Morocco
6
CNRS, Université Grenoble Alpes, France
T
he development of new biomaterials with enhanced mechanical and physical properties and biocompatibility has become
a major challenge in biomaterials community. In this case, biomaterials play a very important role as source for needed
materials to satisfy human requirements. Among different categories of biomaterials, hydroxyapatite HAP is responsible for
bio-mineralization, osteoinduction, and osteo-integration and has good biocompatibility and bioactivity. Because pure HAP
shows poor mechanical properties, low strength (<120MPa) and low fracture toughness, different inorganic additives such as
zirconia and alumina are introduced in order to improve the properties of hydroxyapatite. In this study, various HAP-ZrO
2
and
HAP-Al
2
O
3
biocomposite powders have been synthesized using a modified precipitation method under ultrasonic irradiation
and haracterized by numerous techniques. The in situ growth of ZrO
2
and Al
2
O
3
followed by thermal treatment allowed for
the formation of nanocomposites homogeneously dispersed in the hydroxyapatite phase. The benefit of this association favors
the dispersion of oxide phase in the apatite structure and therefore enhances their intrinsic mechanical properties. High oxide
loadings within the HAp structure can even lead to superior mechanical efficient compared to the HAP alone. Considering
these results, we have prepared here HAP-ZrO
2
and HAP-Al
2
O
3
nanocomposites and evaluated their mechanical properties
towards the addition of oxide phase.
laasrisaid@yahoo.frRes. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C1-015