Embedded 3D printing of microstructured multi-material composites
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Additive manufacturing could open new opportunities in the design of advanced composites and multi-material devices. However, when it comes to the combination of inorganic materials, it is difficult to achieve the structural control demanded by many advanced applications. To address this challenge, we have formulated a self-healing ceramic gel that enables the movement of a printing nozzle in its interior. After a heat treatment, the gel forms a defect-free ceramic encapsulating the printed structure. We have used this technique to print sacrificial lightweight graphite structures as well as dense steel frameworks within an alumina ceramic. The graphite is used to generate complex microchannel arrays, whereas the introduction of auxetic steel structures results in works of fracture 50% greater than those obtained with simple fiber arrays and orders of magnitude above the fracture energy of the matrix. These results suggest that embedded 3D printing can open the way to implement new composite designs.
Date Issued
2024-02-07
Date Acceptance
2023-10-30
Citation
Matter, 2024, 7 (2), pp.668-684
ISSN
2590-2385
Publisher
Cell Press
Start Page
668
End Page
684
Journal / Book Title
Matter
Volume
7
Issue
2
Copyright Statement
© 2023 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
License URL
Sponsor
Engineering & Physical Science Research Council (E
Identifier
http://dx.doi.org/10.1016/j.matt.2023.10.031
Grant Number
146280 MAPP - EP/P006566/1
Subjects
CARBON
CERAMICS
FABRICATION
Materials Science
Materials Science, Multidisciplinary
Science & Technology
SOFT
Technology
Publication Status
Published
Date Publish Online
2023-11-22