Publication detail

Degradable magnesium-hydroxyapatite interpenetrating phase composites processed by current assisted metal infiltration in additive-manufactured porous preforms

CASAS LUNA, M. MONTUFAR JIMENEZ, E. HORT, N. DÍAZ DE LA TORRE, S. MENDEZ-GARCIA, J. VIŠTEJNOVÁ, L. BŘÍNEK, A. DAŇHEL, A. DVOŘÁK, K. KAISER, J. ČELKO, L.

Original Title

Degradable magnesium-hydroxyapatite interpenetrating phase composites processed by current assisted metal infiltration in additive-manufactured porous preforms

Type

journal article in Web of Science

Language

English

Original Abstract

This work explores ceramic additive manufacturing in combination with liquid metal infiltration for the production of degradable interpenetrating phase magnesium/hydroxyapatite (Mg/HA) composites. Material extrusion additive manufacturing was used to produce stoichiometric, and calcium deficient HA preforms with a well-controlled open pore network, allowing the customization of the topological relationship of the composite. Pure Mg and two different Mg alloys were used to infiltrate the preforms by means of an advanced liquid infiltration method inspired by spark plasma sintering, using a novel die design to avoid the structural collapse of the preform. Complete infiltration was achieved in 8 min, including the time for the Mg melting. The short processing time enabled to restrict the decomposition of HA due to the reducing capacity of liquid Mg. The pure Mg-base composites showed compressive yield strength above pure Mg in cast state. Mg alloy-based composites did not show higher strength than the bare alloys due to grain coarsening, but showed similar mechanical properties than other Mg/HA composites that have significantly higher fraction of metallic phase. The composites showed faster degradation rate under simulated body conditions than the bare metallic component due to the formation of galvanic pairs at microstructural level. Mg dissolved preferentially over HA leaving behind a scaffold after a prolonged degradation period. In turn, the fast production of soluble degradation products caused cell metabolic changes after 24 h of culture with not-diluted material extracts. The topological optimization and reduction of the degradation rate are the topics for future research. (c) 2022 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer review under responsibility of Chongqing University

Keywords

Interpenetrating phase composite; Biodegradable metal; Topological relationship; Direct ink writing; Metal infiltration; Computed aided design

Authors

CASAS LUNA, M.; MONTUFAR JIMENEZ, E.; HORT, N.; DÍAZ DE LA TORRE, S.; MENDEZ-GARCIA, J.; VIŠTEJNOVÁ, L.; BŘÍNEK, A.; DAŇHEL, A.; DVOŘÁK, K.; KAISER, J.; ČELKO, L.

Released

1. 12. 2022

Publisher

KEAI PUBLISHING LTD

Location

BEIJING

ISBN

2213-9567

Periodical

Journal of Magnesium and Alloys

Year of study

10

Number

12

State

People's Republic of China

Pages from

3641

Pages to

3656

Pages count

16

URL

https://www.sciencedirect.com/science/article/pii/S2213956722001876

BibTex

@article{BUT182391,
  author="Mariano {Casas Luna} and Edgar Benjamin {Montufar Jimenez} and Norbert {Hort} and Sebastian {Díaz de la Torre} and Jose C. {Mendez-Garcia} and Lucie {Vištejnová} and Adam {Břínek} and Aleš {Daňhel} and Karel {Dvořák} and Jozef {Kaiser} and Ladislav {Čelko}",
  title="Degradable magnesium-hydroxyapatite interpenetrating phase composites processed by current assisted metal infiltration in additive-manufactured porous preforms",
  journal="Journal of Magnesium and Alloys",
  year="2022",
  volume="10",
  number="12",
  pages="3641--3656",
  doi="10.1016/j.jma.2022.07.019",
  issn="2213-9567",
  url="https://www.sciencedirect.com/science/article/pii/S2213956722001876"
}