A survey of fabrication and application of metallic foams (1925–2017)

Singh, Shweta; Bhatnagar, Naresh

doi:10.1007/s10934-017-0467-1

Cited by 92 publications

(55 citation statements)

References 72 publications

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“…by creating pores in the bulk material or by fusing many separate cells into a single structure [26]. The former approach in turn can be implemented using many different techniques.…”

Section: Porous Metal Fabrication Methodsmentioning

confidence: 99%

Architected porous metals in electrochemical energy storage

Egorov

O’Dwyer

2020

Current Opinion in Electrochemistry

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Porous metallic structures are regularly used in electrochemical energy storage devices as supports, current collectors or active electrode materials. Bulk metal porosification, dealloying, welding or chemical synthesis routes involving crystal growth or self-assembly for example, can sometimes provide limited control of porous length scale, ordering, periodicity, reproducibility, porosity and surface area. Additive manufacturing and 3D printing has shown the potential to revolutionize the fabrication of architected metals many forms, allowing complex geometries not usually possible by traditional methods, but enabling complete design freedom of a porous metal based on the required physical or chemical property to be exploited. We discuss properties of porous metal structures in EES devices and provide some opinions on how architected metals may alleviate issues with electrochemically active porous metal current collectors, and provide opportunities for optimum design based on electrochemical characteristics required by batteries, supercapacitors or other electrochemical devices.

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“…by creating pores in the bulk material or by fusing many separate cells into a single structure [26]. The former approach in turn can be implemented using many different techniques.…”

Section: Porous Metal Fabrication Methodsmentioning

confidence: 99%

Architected porous metals in electrochemical energy storage

Egorov

O’Dwyer

2020

Current Opinion in Electrochemistry

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“…Thermal management has become a critical issue that often slows down or even hinders the progress of evolving power electronic technologies as a result of increasing power densities and decreasing transistor dimensions [4][5][6][7][8]. A successful strategy for efficient heat removal in electronic systems, called active thermal management, consists in forcing the direct transfer of heat from hot spots to some carrier fluids through a conduction-convection mechanism by means of using high thermally conductive open-pore foams.…”

Section: Current Needs To Incorporate New Phases Into Open-pore Foamsmentioning

confidence: 99%

“…Their outstanding mechanical and thermoelectrical conductive properties allow these materials being considered excellent candidates for a wide variety of applications depending on their porous structure, as it can be seen in Figure 1. Their high surface area per unit volume, low density, and great heat transfer capacity make them suitable for thermal management (heat exchangers and heat sinks), electrode materials, catalyst carriers, and biomedical engineering as biocompatible and biodegradable scaffolds [4]. When used in medical implantology, the interconnected structure provides a transition space between the bone and the biomaterial structural support, which allow the in-growth of bone tissue and vascularization [5].…”

Section: Introductionmentioning

confidence: 99%

Open-Pore Foams Modified by Incorporation of New Phases: Multiphase Foams for Thermal, Catalytic and Medical Emerging Applications

Lauría¹,

Jordá²

2020

Foams - Emerging Technologies

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Recently, open-pore foam materials have acquired great interest in several technological sectors due to their excellent properties of low density, great specific surface area, adjustable thermal conductivity, and high-energy absorption. The replication method has proved to be one of the most widely used techniques for their manufacture, allowing a perfect control of the pores' characteristics from which the main properties of the foams derive. However, these properties have limited the use of these materials in ultimate applications of the most demanding emerging technologies. This chapter reviews recent developments of open-pore foams that have been modified by the incorporation of new phases in order to enhance their properties. The inclusion of new phases taking part of the microstructure or modifying the pore surfaces allows these materials to be considered promising for the most modern applications including, among others, thermal dissipation, catalytic supports, and medical implantology.

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“…Thus, porous Ni-free SMAs possess suitable mechanical and biomechanical properties required for hard-tissue replacement applications proposed in Section 3 , while the worry for Ni ion releasing no longer exists. Thus, these make them competitive materials (even superior to others porous pure Ti or porous Ti-6Al-4V alloys [ 261 ]) for hard-tissue implantation, such as various biological fixation applications [ 262 ], or for biomedical scaffolds in tissue engineering applications [ 263 ], as shown in Figure 43 . All of the biomedical application examples that are discussed in Section 4.4 are also applicable to porous Ni-free SMAs.…”

Section: Porous Ni-free Shape Memory Alloysmentioning

confidence: 99%

Biomedical Porous Shape Memory Alloys for Hard-Tissue Replacement Materials

2018

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Porous shape memory alloys (SMAs), including NiTi and Ni-free Ti-based alloys, are unusual materials for hard-tissue replacements because of their unique superelasticity (SE), good biocompatibility, and low elastic modulus. However, the Ni ion releasing for porous NiTi SMAs in physiological conditions and relatively low SE for porous Ni-free SMAs have delayed their clinic applications as implantable materials. The present article reviews recent research progresses on porous NiTi and Ni-free SMAs for hard-tissue replacements, focusing on two specific topics: (i) synthesis of porous SMAs with optimal porous structure, microstructure, mechanical, and biological properties; and, (ii) surface modifications that are designed to create bio-inert or bio-active surfaces with low Ni releasing and high biocompatibility for porous NiTi SMAs. With the advances of preparation technique, the porous SMAs can be tailored to satisfied porous structure with porosity ranging from 30% to 85% and different pore sizes. In addition, they can exhibit an elastic modulus of 0.4–15 GPa and SE of more than 2.5%, as well as good cell and tissue biocompatibility. As a result, porous SMAs had already been used in maxillofacial repairing, teeth root replacement, and cervical and lumbar vertebral implantation. Based on current research progresses, possible future directions are discussed for “property-pore structure” relationship and surface modification investigations, which could lead to optimized porous biomedical SMAs. We believe that porous SMAs with optimal porous structure and a bioactive surface layer are the most competitive candidate for short-term and long-term hard-tissue replacement materials.

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A survey of fabrication and application of metallic foams (1925–2017)

Cited by 92 publications

References 72 publications

Architected porous metals in electrochemical energy storage

Architected porous metals in electrochemical energy storage

Open-Pore Foams Modified by Incorporation of New Phases: Multiphase Foams for Thermal, Catalytic and Medical Emerging Applications

Biomedical Porous Shape Memory Alloys for Hard-Tissue Replacement Materials

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