Damage-tolerant 3D-printed ceramics via conformal coating

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dc.citation.articleNumbereabc5028
dc.citation.issueNumber28
dc.citation.journalTitleScience Advances
dc.citation.volumeNumber7
dc.contributor.authorSajadi, Seyed Mohammad
dc.contributor.authorVásárhelyi, Lívia
dc.contributor.authorMousavi, Reza
dc.contributor.authorRahmati, Amir Hossein
dc.contributor.authorKónya, Zoltán
dc.contributor.authorKukovecz, Ákos
dc.contributor.authorArif, Taib
dc.contributor.authorFilleter, Tobin
dc.contributor.authorVajtai, Robert
dc.contributor.authorBoul, Peter
dc.contributor.authorPang, Zhenqian
dc.contributor.authorLi, Teng
dc.contributor.authorTiwary, Chandra Sekhar
dc.contributor.authorRahman, Muhammad M.
dc.contributor.authorAjayan, Pulickel M.
dc.date.accessioned2021-07-30T15:21:19Z
dc.date.available2021-07-30T15:21:19Z
dc.date.issued2021
dc.description.abstractCeramic materials, despite their high strength and modulus, are limited in many structural applications due to inherent brittleness and low toughness. Nevertheless, ceramic-based structures, in nature, overcome this limitation using bottom-up complex hierarchical assembly of hard ceramic and soft polymer, where ceramics are packaged with tiny fraction of polymers in an internalized fashion. Here, we propose a far simpler approach of entirely externalizing the soft phase via conformal polymer coating over architected ceramic structures, leading to damage tolerance. Architected structures are printed using silica-filled preceramic polymer, pyrolyzed to stabilize the ceramic scaffolds, and then dip-coated conformally with a thin, flexible epoxy polymer. The polymer-coated architected structures show multifold improvement in compressive strength and toughness while resisting catastrophic failure through a considerable delay of the damage propagation. This surface modification approach allows a simple strategy to build complex ceramic parts that are far more damage-tolerant than their traditional counterparts. Conformal polymer coating leads to damage-tolerant architected ceramic structures with high strength and toughness. Conformal polymer coating leads to damage-tolerant architected ceramic structures with high strength and toughness.
dc.identifier.citationSajadi, Seyed Mohammad, Vásárhelyi, Lívia, Mousavi, Reza, et al.. "Damage-tolerant 3D-printed ceramics via conformal coating." <i>Science Advances,</i> 7, no. 28 (2021) AAAS: https://doi.org/10.1126/sciadv.abc5028.
dc.identifier.digitaleabc5028-full
dc.identifier.doihttps://doi.org/10.1126/sciadv.abc5028
dc.identifier.urihttps://hdl.handle.net/1911/111044
dc.language.isoeng
dc.publisherAAAS
dc.rightsDistributed under a Creative Commons Attribution NonCommercial License 4.0
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.titleDamage-tolerant 3D-printed ceramics via conformal coating
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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