Journal
JOURNAL OF COMPOSITE MATERIALS
Volume 55, Issue 9, Pages -Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998320964553
Keywords
Hydroxyapatite; quasicrystal; composite; mechanical properties
Categories
Funding
- Circulo de Investigacion e Innovacion de Materiales Avanzados para la Industria y Biomedicina of FONDECYT (CONCYTEC) [011-2014-FONDECYT]
- Brazilian Society of Physics (PLAF program)
- FONDECYT (CONCYTEC) through the Excellence Center Program
Ask authors/readers for more resources
The mechanical strength of HAp/QC composites increases with the concentration of quasicrystalline reinforcement, with a 43% increase in Young's modulus and a 21% increase in compressive strength at a 10 wt% QC reinforcement. Additionally, the composite did not exhibit cytotoxicity at any QC concentration, indicating its potential for applications in the biomedical industry.
Mechanical behavior of hydroxyapatite-based composites (HAp) was studied as a function of the reinforcement concentration of the quasicrystalline (QC) Al64Cu23Fe13 alloy. The synthesis of the HAp matrix was carried out by sol-gel method, while the synthesis of the QC was performed by an arc furnace with a subsequent thermal treatment. The composites were made by powder metallurgy and cold compacted to form test pieces that were sintered with a constant flow of argon. The materials were characterized using X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and Fourier transform Raman spectroscopy. The study of mechanical strength was carried through compression tests. The biocompatibility of the composites was tested using an in-vitro cytotoxicity assay. The mechanical resistance of HAp/QC composites increased with the concentration of quasicrystalline reinforcement. Young's modulus and compressive strength increased in 43% and 21%, respectively, with a 10 wt% QC reinforcement, which demonstrates an hybrid behaviour of the composite due to the inclusion of reinforcing particles in the pores of the matrix. This composite did not show cytotoxicity at any of the QC concentrations. A fabrication route is proposed as a fast, easy and high efficiency alternative for applications in the biomedical industry because of its high scalability potential.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available