From liquid metal dealloying to liquid metal expulsion

Shao, Jun-Chao; Jin, Hai-Jun

doi:10.1007/s10853-020-04599-2

Cited by 12 publications

(8 citation statements)

References 49 publications

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“…Surface sacrificial metals will be stripped from the alloy, leading to roughness increase or surface cavity formation, within which the molten extraction medium will further penetrate to continue the dissolution process. 81 The operating mechanism is therefore solution−diffusion driven and would follow the Arrhenius law as for the chemical dealloying process, and the diffusion coefficients must be evaluated for each system dynamically. 82 Altering the extraction conditions and parameters such as the extraction temperature, duration, or mass ratio of the alloy to the extraction medium will impact the extraction rate.…”

Section: Electrochemical Dealloyingmentioning

confidence: 99%

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Scandura

Kumari

Palmisano

et al. 2023

Ind. Eng. Chem. Res.

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The development of porous metal materials with pore geometries and sizes at the nanoscale offers promising opportunities for the development of smart responsive interfaces for separation and catalytic applications and as building blocks for complex composite materials. Dealloying is an innovative technique based on selective removal of a sacrificial metal from a metal alloy to engineer surface textures and pores across significant thicknesses. Dealloyed structures may be processed over large scales and for a range of source alloys, offering unprecedented manufacturing opportunities. This review presents the operations and challenges of dealloying routes and discusses avenues for process optimizations and improvements, aiming at the development of scalable nanoporous materials. The potential of dealloyed materials for catalytic and sensing applications is expanded and benchmarked against reference materials. Future prospects and applications of dealloyed materials toward surface reactivity control and pore architecture development are highlighted.

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Section: Electrochemical Dealloyingmentioning

confidence: 99%

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Scandura

Kumari

Palmisano

et al. 2023

Ind. Eng. Chem. Res.

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“…The temperature required by this method is much lower than the temperature required for the preparation of precursor alloys and dealloying processes in other methods. Select appropriate conditions for the reaction, [ 161 ] and use LMs dealloying technology to process micro‐nano pores on the metal substrate may play a role in the field of microporous drug delivery.…”

Section: Applicationsmentioning

confidence: 99%

Recent Development of Liquid Metal‐Based Functional Materials Combined with Common Transition Metals

Wang

Guo

Xiao

et al. 2021

Adv Materials Inter

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Gallium‐based liquid metals (LMs) are a group of metal materials that are in liquid state at room temperature. Their unique physiochemical properties such as fluidity, conductivity, and interfacial properties with other materials have presented great potentials and wide applications. Specifically, the interactions between gallium‐based LMs and some common but important transition metals (TMs) have not only enabled a series of intriguing phenomena but also provided valuable strategies or functional materials in soft robotics, devices, flexible electronics, addictive manufacturing, biomedical engineering and therapies, and other fields. The chemical mechanisms including the galvanic corrosion, infiltration, intermetallic compound formation should play vital roles within these interactions. Hereby the combining the LMs and TMs by alloying or physically mixing may offer a platform to develop novel and multifunctional materials system. To acquire a comprehensive understanding of those interactions as well as to inspire the researches for multifunctional materials design and applications, this article reviews the researches on the combination of LMs and TMs, discusses the characteristics, the mechanisms, and their applications especially in electronics, smart materials, and biomedicine. The main challenges and future research outlook are also discussed.

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“…Recently, there have been some successful reports on fabrication of highly reactive non-noble mesoporous metals such as nanoporous aluminum [30]. In its turn, liquid metal dealloying has been used to fabricate a wide range of non-noble porous metals, including steels [31][32][33][34][35][36], titanium and titanium alloys [11,[37][38][39], zirconium [12], tantalum [40], and cobalt-chromium [41], among others, as well as non-metallic porous materials such as silicon [42] and carbon [43,44]. Particularly important is the recent progress in the development of highly reactive mesoporous metals such as nanoporous magnesium [45] as well as multicomponent complex alloys such as nanoporous high-entropy alloys [46] by liquid metal dealloying.…”

Section: Introductionmentioning

confidence: 99%

Surface Functionalization of Biomedical Ti-6Al-7Nb Alloy by Liquid Metal Dealloying

et al. 2020

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Surface functionalization is an effective approach to change the surface properties of a material to achieve a specific goal such as improving the biocompatibility of the material. Here, the surface of the commercial biomedical Ti-6Al-7Nb alloy was functionalized through synthesizing of a porous surface layer by liquid metal dealloying (LMD). During LMD, the Ti-6Al-7Nb alloy is immersed in liquid magnesium (Mg) and both materials react with each other. Particularly, aluminum (Al) is selectively dissolved from the Ti-6Al-7Nb alloy into liquid Mg while titanium (Ti) and niobium (Nb) diffuse along the metal/liquid interface to form a porous structure. We demonstrate that the porous surface layer in the Ti-6Al-7Nb alloy can be successfully tailored by LMD. Furthermore, the concentration of harmful Al in this porous layer is reduced by about 48% (from 5.62 ± 0.11 wt.% to 2.95 ± 0.05 wt.%) after 30 min of dealloying at 1150 K. The properties of the porous layer (e.g., layer thickness) can be tuned by varying the dealloying conditions. In-vitro tests suggest improved bone formation on the functionalized porous surface of the Ti-6Al-7Nb alloy.

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From liquid metal dealloying to liquid metal expulsion

Cited by 12 publications

References 49 publications

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Nanoporous Dealloyed Metal Materials Processing and Applications─A Review

Recent Development of Liquid Metal‐Based Functional Materials Combined with Common Transition Metals

Surface Functionalization of Biomedical Ti-6Al-7Nb Alloy by Liquid Metal Dealloying

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