Title
Improvement of mechanical properties of hydroxyapatite composites reinforced with i-Al<inf>64</inf>Cu<inf>23</inf>Fe<inf>13</inf> quasicrystal
Date Issued
01 January 2020
Access level
metadata only access
Resource Type
journal article
Publisher(s)
SAGE Publications Ltd
Abstract
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.
Language
English
OCDE Knowledge area
Ingeniería de materiales Biotecnología relacionada con la salud
Scopus EID
2-s2.0-85092651954
Source
Journal of Composite Materials
ISSN of the container
00219983
Sources of information: Directorio de Producción Científica Scopus