Nanoindentation for mechanical behaviour characterization of nanoporous silver fabricated through dealloying

Li, Zhiqiang; Lü, Xing

doi:10.1007/s12034-021-02448-9

Cited by 5 publications

(3 citation statements)

References 40 publications

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“…During the removal process, atoms of the remaining alloy constituents spontaneously form a nanostructured porous structure through migration and diffusion. As the nanoporous structure constantly evolves during the dealloying process, it is possible to obtain nanoporous structures with different characteristic sizes by controlling the dealloying process [41,42].…”

Section: Preparation Methods Of Nanoporous Metalsmentioning

confidence: 99%

Electro-Chemical Actuation of Nanoporous Metal Materials Induced by Surface Stress

Zhao

Hao

et al. 2023

Metals

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Similar to biological muscles, the actuator materials can function as artificial muscles by directly converting an external stimulus in the form of electrical or chemical energy into a mechanical response through the reversible changes in material dimensions. As a new type of high surface-area actuator materials, nanoporous metals represent a novel class of smart electrodes that undergo reversible dimensional changes when applying an electronic voltage on the surface. The dimensional changes in nanoporous metal/polymer composite still originate from the surface stress of nanoporous metal. Additionally, this surface stress can be modulated by the co-adsorbed sulfate counter-ions that are present in the doped polymer chains coating matrix upon the application of an external potential. Nanoporous metals fabricated by dealloying have received extensive attention in many areas, such as catalysis/electrocatalysis, energy conversion/storage, and sensing/biosensing. In this review, we focus on the recent developments of dealloyed nanoporous metals in the application of actuation. In particular, we summarize the experimental strategies in the studies and highlight the recent advances in the actuator materials. Finally, we conclude with outlook and perspectives with respect to future research on dealloyed nanoporous metals in applications of actuation in electrochemical or chemical environment.

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Section: Preparation Methods Of Nanoporous Metalsmentioning

confidence: 99%

Electro-Chemical Actuation of Nanoporous Metal Materials Induced by Surface Stress

Zhao

Hao

et al. 2023

Metals

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“…A further possible application of binary alloys with well defined compositions is the fabrication of nanoporous metal structures with tuned ligament sizes and volume fraction [52]. Exerting precise control over these parameters enables the manipulation of material properties, such as mechanical [53] or optical [54] characteristics. Therefore, the straightforward control of composition merely through setting the appropriate ratio in the electrolyte of EHD-RP promises a high versatility of the technique.…”

Section: Deposition Of Binary Alloysmentioning

confidence: 99%

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Porenta¹,

Nydegger²,

Menétrey³

et al. 2023

Preprint

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“…According to Rugolo et al [8], dealloying is particularly effective in achieving a uniform nanoporous structure when the precursor alloy system exhibits minimal phase separation, or even better, if it is a homogenous solid solution. Consequently, many np-structures reported previously have been fabricated from single-phase solid solution precursor alloys [9][10][11]. While it is relatively easy to identify homogenous solid solutions for certain binary alloy systems, the suitable precursor possibilities are limited.…”

Section: Introductionmentioning

confidence: 99%

Inhibited Surface Diffusion in Nanoporous Multi-Principal Element Alloy Thin Films Prepared by Vacuum Thermal Dealloying

Das Gupta,

Balk

2024

Metals

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Nanoporous structures with 3D interconnected networks are traditionally made by dealloying a binary precursor. Certain approaches for fabricating these materials have been applied to refractory multi-principal element alloys (RMPEAs), which can be suitable candidates for high-temperature applications. In this study, nanoporous refractory multi-principal element alloys (np-RMPEAs) were fabricated from magnesium-based thin films (VMoNbTaMg) that had been prepared by magnetron sputtering. Vacuum thermal dealloying (VTD), which involves sublimation of a higher vapor pressure element, is a novel technique for synthesizing nanoporous refractory elements that are prone to oxidation. When VMoNbTaMg was heated under vacuum, a nanoporous structure was created by the sublimation of the highest vapor pressure element (Mg). X-ray photoelectron spectroscopy depth profiling indicated significantly less ligament oxidation during VTD as compared to traditional dealloying methods. Furthermore, np-RMPEAs exhibited outstanding stability against coarsening, retaining smaller ligaments (~25 nm) at elevated temperature (700 °C) for a prolonged period (48 h).

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Nanoindentation for mechanical behaviour characterization of nanoporous silver fabricated through dealloying

Cited by 5 publications

References 40 publications

Electro-Chemical Actuation of Nanoporous Metal Materials Induced by Surface Stress

Electro-Chemical Actuation of Nanoporous Metal Materials Induced by Surface Stress

Micron-Scale Additive Manufacturing of Binary and Ternary Alloys by Electrohydrodynamic Redox 3d Printing

Inhibited Surface Diffusion in Nanoporous Multi-Principal Element Alloy Thin Films Prepared by Vacuum Thermal Dealloying

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