Publication detail

Magnesium Strengthening in 3D Printed TCP Scaffold Composites

HERNANDEZ ESCALERA, C. FIGUEROA, I., A. CASAS LUNA, M. RODRIGUEZ-GÓMEZ, F. J. PINA-BARBA, C. MONTUFAR JIMENEZ, E. ČELKO, L.

Original Title

Magnesium Strengthening in 3D Printed TCP Scaffold Composites

Type

journal article in Web of Science

Language

English

Original Abstract

This study reports the production of a Mg/15%beta-tricalcium phosphate Ca3(PO4)2 composite by combining direct ink writing for the beta-TCP preform and liquid infiltration technique to obtain a continuous metal matrix composite. The influence of the volume fraction of beta-TCP and the in situ reaction between ceramic and metal on the microstructure and mechanical properties were investigated in detail. The beta-TCP preform was uniformly distributed in the matrix, forming a continuous three-dimensional (3D) network. The obtained composite was characterized by means of relative density (He pycnometry), X-ray diffractometry (XRD), scanning electron microscopy (SEM), and electron spectroscopy (EDX). The results suggested that a highly densified composite was processed. Three phases were identified as products generated by an exothermic reaction (Mg2Ca, CaO, and MgO); based on this, the chemical reaction mechanism for MgO formation was proposed. The compression and hardness tests showed that the Mg/15%beta-tricalcium phosphate Ca3 (PO4)2 composite significantly improved its mechanical properties, i.e., 27% and 15% higher than pure Mg in compressive strength and yield strength, respectively. This behavior was attributed to the high densification of the resulting composite, strong chemical interfacial bonding, phase dispersion hardening (in situ phase formation), and the geometry and continuity of the reinforcement. These provided good load transfer from the Mg matrix to the reinforcement and contributed as strengthening mechanisms. The results reported in this investigation can help to design Mg/calcium phosphate continuous composites for biomedical applications.

Keywords

metal matrix composites (MMCs); 3-dimensional reinforcement; mechanical properties; liquid metal infiltration; in situ formed particles

Authors

HERNANDEZ ESCALERA, C.; FIGUEROA, I., A.; CASAS LUNA, M.; RODRIGUEZ-GÓMEZ, F. J.; PINA-BARBA, C.; MONTUFAR JIMENEZ, E.; ČELKO, L.

Released

9. 11. 2023

Publisher

MDPI

Location

BASEL

ISBN

2504-477X

Periodical

Journal of Composites Science

Year of study

7

Number

11

State

Swiss Confederation

Pages count

12

URL

https://www.mdpi.com/2504-477X/7/11/467

BibTex

@article{BUT186838,
  author="HERNANDEZ ESCALERA, C. and FIGUEROA, I., A. and CASAS LUNA, M. and RODRIGUEZ-GÓMEZ, F. J. and PINA-BARBA, C. and MONTUFAR JIMENEZ, E. and ČELKO, L.",
  title="Magnesium Strengthening in 3D Printed TCP Scaffold Composites",
  journal="Journal of Composites Science",
  year="2023",
  volume="7",
  number="11",
  pages="12",
  doi="10.3390/jcs7110467",
  issn="2504-477X",
  url="https://www.mdpi.com/2504-477X/7/11/467"
}