Abstract
Superior mechanical properties of nanolayered structures have 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.
| Original language | English |
|---|---|
| Pages (from-to) | 3500-3506 |
| Number of pages | 7 |
| Journal | Nano Letters |
| Volume | 16 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2016 Jun 8 |
Bibliographical note
Funding Information:Y.K.K appreciates the funding by the National Research Foundation (NRF) of Korea (2015R1A2A1A15053002) funded by the Ministry of Science, ICT and Future Planning (MSIP). I.S.C. acknowledges the financial support through the internal research program of the Korea Institute of Science and Technology (2E26082) and also through a NRF of Korea (2015R1A2A2A04006933) funded by MSIP. O.K. is grateful for his support by the Robert Bosch Foundation.
Publisher Copyright:
© 2016 American Chemical Society.
Keywords
- Ultrastrong nanowire
- microalloying
- multilayer structure
- nanocrystalline Ni-Au
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering