High-throughput drawing and testing of metallic glass nanostructures

Hasan, Molla; Kumar, Golden

doi:10.1039/c7nr00126f

Cited by 42 publications

(24 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This consistency indirectly proves that homogeneous plasticity of nanoscale metallic glass originates from the shear transformations around shear dilatation. [72] This is consistent with the intermediate temperature brittleness in BMGs discovered recently. [68] In addition, the prediction shown in Figure 11 that the critical length scale varied with strain rate is consistent with experiments in a literature.…”

Section: Shear Banding To Homogeneous Plastic Deformation Transition supporting

confidence: 91%

“…The figure shows that the critical wire diameter for the transition at the experimental strain rate is very close to the size of the shear band nucleus. [72] The critical length scale of the transition decreases with increasing temperature at intermediate temperatures (300-400 K). This explanation can also explain the work hardening of nanoscale MGs as described above because shear transformation around shear dilatation need higher stress.…”

Section: Shear Banding To Homogeneous Plastic Deformation Transition mentioning

confidence: 99%

See 1 more Smart Citation

Fabrication and Properties of Micro‐ and Nanoscale Metallic Glassy Wires: A Review

2017

Adv Eng Mater

View full text Add to dashboard Cite

A large number of metallic glasses (MGs) with high mechanical and functional performance that cannot be achieved by traditional metals in various alloy systems have been developed. At the same time, people realized that micro-and nanoscale wires can improve properties and extend functionality of bulk materials. Therefore, intensive effort has been made to fabricate micro-and nanoscale MG wires, and study their mechanical and physical behavior to achieve high performance. This article reviews fabrication, properties and applications of the wires, and presents technical and theoretical challenges, which must be tackled to achieve high-performance MG wire devices and understand physical mechanisms of mechanical and functional behaviors of the wires.

show abstract

Section: Shear Banding To Homogeneous Plastic Deformation Transition supporting

confidence: 91%

Section: Shear Banding To Homogeneous Plastic Deformation Transition mentioning

confidence: 99%

Fabrication and Properties of Micro‐ and Nanoscale Metallic Glassy Wires: A Review

2017

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…[44] Thus nanowires and nanorods resulting in a 3D-N can be created using a top-down approach. [48] Kumar and co-workers proposed a template assisted thermoplastic drawing technique that can fabricate nanotips, nanorods, nanowires/tubes and nanoscale tensile specimens as shown in Figure 3. [45] These binderfree electrodes are gaining recent interest because the presence of binder materials in conventional electrodes decreases the contact area between the electrolyte and catalyst (blocking catalytically active sites) which can result in high resistance and reduced electrocatalytic performance, [46] We show a general TPF procedure for fabricating MGNs for electrocatalytic reactions (Figure 2).…”

Section: Top-down Approachmentioning

confidence: 99%

“…[35] 3D-Ns are part of a larger group of electrodes referred to as one-body or binder-free electrodes (see Section 3.1). [48] The size of the nanorods created by traditional TPF is primarily limited by the size of the nanotemplate, which ranges from sub-100 nm to several hundreds of nanometers. [40] The formability and optimal processing when using TPF depends on the viscosity, flow velocity and channel width.…”

Section: Top-down Approachmentioning

confidence: 99%

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Doubek

McMillon‐Brown

et al. 2018

Advanced Materials

View full text Add to dashboard Cite

transformers [2] and load bearing applications. [3] In the last few decades, the study of nanomaterials has become a central focus in nanoscience and nanotechnology. [4] In fact, many studies have shown that with reduction in size, nanomaterials display novel electrical, mechanical, chemical and optical properties, which are largely believed to be the result of surface and quantum confinement effects. [4,5] Remarkably, this trend has found traction in the metallic glass field where metallic glasses nanostructures (MGNs) demonstrate an important role in many applications such as light harvesting, [6] photovoltaic, [7] biomedical, [8] magneto-optical, [9] organic synthesis, [10] lithium-ion batteries [11] and electrocatalysis. [12] Recently, MGNs are receiving increased attention due to their distinguished performance, such as high activity and long term stability in electrocatalytic reactions. [12,13] Although several review papers have already covered the topic of nanopatterning of bulk metallic glasses (BMGs), [14][15][16] the correlation between recent synthetic methods and electrocatalytic applications for MGNs has not been thoroughly addressed. Moreover, there is currently no review that unites MGNs synthesized from different approaches (top-down and bottom-up) with conventional electrochemical reactions. Therefore, in this review our mission is to: 1) present a focused perspective on the latest fabrication techniques of MGNs toward the pursuit of novel electrocatalysts and electrodes; 2) highlight recent advances in computational screening and predictions that could be applied toward new metallic glass electrocatalyst discovery; and 3) report distinct advancements in electrocatalytic applications related to MGNs by creating a comprehensive discussion for commonly employed kinetic parameters and their connection with the unique material structure. Finally, as the first progress report on the metallic glass based electrocatalysts, we will also highlight some of the challenges that need to be addressed toward future progress in this field.BMGs are those metallic glasses (MGs) that can be made in 'bulk' scale with good glass forming abilities, [17] representing a versatile platform for many applications. To date, a wide range of BMG-forming alloys have been developed, including Zr-, [18] Fe-, [19] Cu-, [20] Ni-, [21] Ti-, [22] Mg-, [23] Pd-, [24] Au-, [25] and Pt-based compositions. [26] Moreover, the increased disorder brought by the higher degree of multinary systems is believed to contribute to improving the glass formation. [27] The evolution to multicomponent alloys of the most recent MG studies has also made them natural candidates for catalysis. The amorphous multinary Recent advances in metallic glass nanostructures (MGNs) are reported, covering a wide array of synthesis strategies, computational discovery, and design solutions that provide insight into distinct electrocatalytic applications. A brief introduction to the development and unique features of MGNs with an overview of top-down and bottom-up sy...

show abstract

“…In addition, size reduction approach changes room temperature plastic deformation mechanism of MG from shear banding into homogeneous plastic flow 14–18 . However, the transition occurs at submicron length scale 17,19 .…”

Section: Introductionmentioning

confidence: 99%

Tensile behavior of Cu-coated Pd40Cu30Ni10P20 metallic glassy wire

Hussain

Jiang

Jia

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Catastrophic brittle fracture of monolithic metallic glass (MG) hinders engineering application of MGs. Although many techniques has been tried to enhance tensile ductility of metallic glasses, the enhancement is quite limited. Here, we show the effect of electrodeposited Cu coating on tensile plasticity enhancement of Pd40Cu30Ni10P20 MG wires, with different volume fractions of copper coatings (R), from 0% to 97%. With increasing R, tensile elongation is enhanced to 7.1%. The plasticity enhancement is due to confinement of the Cu coatings, which lead to multiple and secondary shear bands, according to SEM investigations. In addition, the SEM images also show that the patterns on the fracture surface of the Cu-coated MG wires vary with volume fraction of the Cu coatings. The size of shear offset decreases with increasing R. The viscous fingerings on the fracture surface of monolithic MG wire changes into dimples on the fracture surface of Cu coated MG wires with R of 90% and 97%. The electrodeposition technique used in this work provides a useful way to enhance plasticity of monolithic MGs under tensile loading at room temperature.

show abstract

High-throughput drawing and testing of metallic glass nanostructures

Cited by 42 publications

References 70 publications

Fabrication and Properties of Micro‐ and Nanoscale Metallic Glassy Wires: A Review

Fabrication and Properties of Micro‐ and Nanoscale Metallic Glassy Wires: A Review

Recent Advances in Metallic Glass Nanostructures: Synthesis Strategies and Electrocatalytic Applications

Tensile behavior of Cu-coated Pd40Cu30Ni10P20 metallic glassy wire

Contact Info

Product

Resources

About