Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating

Abstract Mechanical metamaterials such as microlattices are an emerging kind of new materials that utilize the combination of structural enhancement effect by geometrical modification and the intrinsic properties of its material constituents. Prior studies have reported the mechanical properties of...

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Autores principales:	James Utama Surjadi, Libo Gao, Ke Cao, Rong Fan, Yang Lu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/96308d2b5de149cca0b9c47e19b51b75
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spelling	oai:doaj.org-article:96308d2b5de149cca0b9c47e19b51b752021-12-02T15:08:11ZMechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating10.1038/s41598-018-23857-72045-2322https://doaj.org/article/96308d2b5de149cca0b9c47e19b51b752018-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-23857-7https://doaj.org/toc/2045-2322Abstract Mechanical metamaterials such as microlattices are an emerging kind of new materials that utilize the combination of structural enhancement effect by geometrical modification and the intrinsic properties of its material constituents. Prior studies have reported the mechanical properties of ceramic or metal-coated composite lattices. However, the scalable synthesis and characterization of high-entropy alloy (HEA) as thin film coating for such cellular materials have not been studied previously. In this work, stereolithography was combined with Radio Frequency (RF) magnetron sputtering to conformally deposit a thin layer (~800 nm) of CrMnFeCoNi HEA film onto a polymer template to produce HEA-coated three-dimensional (3D) core-shell microlattice structures for the first time. The presented polymer/HEA hybrid microlattice exhibits high specific compressive strength (~0.018 MPa kg−1 m3) at a density well below 1000 kg m−3, significantly enhanced stiffness (>5 times), and superior elastic recoverability compared to its polymer counterpart due to its composite nature. The findings imply that this highly scalable and effective route to synthesizing HEA-coated microlattices have the potential to produce novel metamaterials with desirable properties to cater specialized engineering applications.James Utama SurjadiLibo GaoKe CaoRong FanYang LuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q James Utama Surjadi Libo Gao Ke Cao Rong Fan Yang Lu Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
description	Abstract Mechanical metamaterials such as microlattices are an emerging kind of new materials that utilize the combination of structural enhancement effect by geometrical modification and the intrinsic properties of its material constituents. Prior studies have reported the mechanical properties of ceramic or metal-coated composite lattices. However, the scalable synthesis and characterization of high-entropy alloy (HEA) as thin film coating for such cellular materials have not been studied previously. In this work, stereolithography was combined with Radio Frequency (RF) magnetron sputtering to conformally deposit a thin layer (~800 nm) of CrMnFeCoNi HEA film onto a polymer template to produce HEA-coated three-dimensional (3D) core-shell microlattice structures for the first time. The presented polymer/HEA hybrid microlattice exhibits high specific compressive strength (~0.018 MPa kg−1 m3) at a density well below 1000 kg m−3, significantly enhanced stiffness (>5 times), and superior elastic recoverability compared to its polymer counterpart due to its composite nature. The findings imply that this highly scalable and effective route to synthesizing HEA-coated microlattices have the potential to produce novel metamaterials with desirable properties to cater specialized engineering applications.
format	article
author	James Utama Surjadi Libo Gao Ke Cao Rong Fan Yang Lu
author_facet	James Utama Surjadi Libo Gao Ke Cao Rong Fan Yang Lu
author_sort	James Utama Surjadi
title	Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
title_short	Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
title_full	Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
title_fullStr	Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
title_full_unstemmed	Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating
title_sort	mechanical enhancement of core-shell microlattices through high-entropy alloy coating
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/96308d2b5de149cca0b9c47e19b51b75
work_keys_str_mv	AT jamesutamasurjadi mechanicalenhancementofcoreshellmicrolatticesthroughhighentropyalloycoating AT libogao mechanicalenhancementofcoreshellmicrolatticesthroughhighentropyalloycoating AT kecao mechanicalenhancementofcoreshellmicrolatticesthroughhighentropyalloycoating AT rongfan mechanicalenhancementofcoreshellmicrolatticesthroughhighentropyalloycoating AT yanglu mechanicalenhancementofcoreshellmicrolatticesthroughhighentropyalloycoating
_version_	1718388264982806528

Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating

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