Recent Developments in Research on Porous Metals and Foamed Metals

A special issue of Metals (ISSN 2075-4701).

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 3153

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, Urmia University, Urmia, Iran
Interests: polymers; polymeric foams; composites and biocomposites; nanocomposites; porous materials; polymer processing; 3D printing; injection molding; extrusion; mechanical properties; insulation properties; structural properties; plastic waste; plastic waste treatment; gasification; optimization techniques
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Guest Editor
Mechanical Engineering Department, Urmia University, Urmia, Iran
Interests: foams; porous materials; polymers; mechanical properties; dielectric properties

Special Issue Information

Dear Colleagues,

Metallic foams have a combination of properties that make them attractive in different engineering applications. These foams are now among the highly reputable technological developments in automotive, aerospace, and any other weight-related industries. Various methods are used to form metallic foams; however, the main issue in their process is the placement of air cells or any other gaseous pockets within the metal structure. Due to these gaseous regions, the weight of the foamed components is drastically lower compared to components made by traditional processing methods such as casting. The foaming technique can also provide innovative aspects to more complex methods for manufacturing parts with space inclusions. Additionally, besides low weight, these space inclusions can lead to different thermal, electrical, and mechanical properties in metallic foams.

In this Special Issue, we welcome articles on the subject of metallic foams. The focus can be on the processing stage, the morphological structure, the final properties of metallic foams, the applications of these materials, or a combination of these aspects.

Dr. Rezgar Hasanzadeh
Dr. Milad Moradian
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • foams
  • porous materials
  • metallic foams
  • porous metals
  • mechanical properties
  • structural properties
  • heat transfer
  • electrical properties
  • simulation

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Published Papers (2 papers)

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Editorial

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2 pages, 147 KiB  
Editorial
Recent Developments in Research on Porous Metals and Foamed Metals
by Rezgar Hasanzadeh and Milad Moradian
Metals 2022, 12(9), 1486; https://doi.org/10.3390/met12091486 - 8 Sep 2022
Cited by 1 | Viewed by 1396
Abstract
The new open Special Issue of Metals, “Recent Developments in Research on Porous Metals and Foamed Metals”, aims to highlight original and review papers on new scientific and applied research and provide outstanding contributions to the community’s understanding of metal foams and [...] Read more.
The new open Special Issue of Metals, “Recent Developments in Research on Porous Metals and Foamed Metals”, aims to highlight original and review papers on new scientific and applied research and provide outstanding contributions to the community’s understanding of metal foams and related synthesis, fundamentals, characterization, and applications [...] Full article
(This article belongs to the Special Issue Recent Developments in Research on Porous Metals and Foamed Metals)

Research

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11 pages, 5798 KiB  
Article
Porous Fabrication of White Metal Using Ultrasonically Generated Microbubbles
by Yuta Saito, Hitoshi Nozawa, Wenjing Xing and Toshinori Makuta
Metals 2023, 13(10), 1648; https://doi.org/10.3390/met13101648 - 26 Sep 2023
Cited by 2 | Viewed by 1022
Abstract
Conventional methods for producing porous metals involve the use of chemicals such as thickeners and foaming agents under high temperatures and pressures. However, these methods are costly and pose a risk of dust explosion. Thus, the objective of this research is to achieve [...] Read more.
Conventional methods for producing porous metals involve the use of chemicals such as thickeners and foaming agents under high temperatures and pressures. However, these methods are costly and pose a risk of dust explosion. Thus, the objective of this research is to achieve the cost-effective and safe production of porous metals by introducing microbubbles generated by ultrasonic oscillation into the molten metal. One end of an ultrasonic horn was inserted into three different molten metals—white metal, Pb-free solder, and zinc—and microbubbles were generated at the horn end by the strong ultrasonic oscillation in the molten metals. The microbubbles that contained molten metal changed phase to porous metal through solidification, and the diameter, porosity, and stress–strain curve of the generated porous metals were measured. The results indicate that the porosity of white metal, Pb-free solder, and zinc foams reached 54%, 76%, and 48%, respectively, and these porous metals had many micropores less than 1 mm in diameter. It was also observed that the higher the melting point, the larger the pore diameter and the lower the porosity. Furthermore, in the case of white metal, a plateau region of large deformation at constant stress was observed in the stress–strain curve. Full article
(This article belongs to the Special Issue Recent Developments in Research on Porous Metals and Foamed Metals)
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