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

Title
Ultrahigh Tensile Strength Nanowires with a Ni/Ni-Au Multilayer Nanocrystalline Structure
Authors
안재평최인석서종현Boo Hyun AnIn Tak JeonOliver KraftYoung Keun Kim
Issue Date
2016-06
Publisher
Nano letters
Citation
VOL 16, NO 6-3506
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.
URI
http://pubs.kist.re.kr/handle/201004/65018
ISSN
1530-6984
Appears in Collections:
KIST Publication > Article
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