Ultrahigh Tensile Strength Nanowires with a Ni/Ni-Au Multilayer Nanocrystalline Structure

Authors
An, Boo HyunJeon, In TakSeo, Jong-HyunAhn, Jae-PyoungKraft, OliverChoi, In-SukKim, Young Keun
Issue Date
2016-06
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.16, no.6, pp.3500 - 3506
Abstract
Superior mechanical properties of nanolayered structures hive attracted great interest recently. However, previously fabricated multilayer metallic nanostructures have high strength under compressive load but never reached such high strength under tensile loads. Here, we report that our microalloying-based electrodeposition method creates a strong and stable Ni/Ni-Au multilayer nanocrystalline structure by incorporating Au atoms that makes nickel nanowires (NWs) strongest ever under tensile loads even with diameters exceeding 200 nm. When the layer thickness is reduced to 10 nm, the tensile strength reaches the unprecedentedly high 7.4 GPa, approximately 10 times that of metal NWs with similar diameters, and exceeding that of most metal nanostructures previously reported at any scale.
Keywords
COHERENT-TWIN-PROPAGATION; NANOLAYERED COMPOSITES; DEFORMATION MECHANISMS; GOLD NANOWIRES; SCALE TWINS; PLASTICITY; NANOINDENTATION; DISLOCATION; NANOPILLARS; BEHAVIOR; COHERENT-TWIN-PROPAGATION; NANOLAYERED COMPOSITES; DEFORMATION MECHANISMS; GOLD NANOWIRES; SCALE TWINS; PLASTICITY; NANOINDENTATION; DISLOCATION; NANOPILLARS; BEHAVIOR; Ultrastrong nanowire; nanocrystalline Ni-Au; multilayer structure; microalloying
ISSN
1530-6984
URI
https://pubs.kist.re.kr/handle/201004/124024
DOI
10.1021/acs.nanolett.6b00275
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KIST Article > 2016
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