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Nanostructured Materials for Structural Applications
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Nanostructured Materials for Structural Applications

A special issue of Coatings (ISSN 2079-6412).

Deadline for manuscript submissions: closed (20 July 2023) | Viewed by 7076

Special Issue Editor

Dr. Kaixuan Chen

E-Mail Website
Guest Editor
School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: reinforced and toughened copper alloy; high strength aluminum-lithium alloys

Special Issue Information

Dear Colleagues,

The mechanical properties of material are attributed to its microstructure, such as matrix and second phase. The strength of polycrystalline materials increases with decreased grain size, as described by Hall-Petch relation. In particular, grain size reaching nano scale can lead to many distinctive properties, compared to the larger grain-sized counterpart. Furthermore, dispersion strengthening of metal matrix achieved by introducing a second-phase in the matrix has drawn wide attentions. Strength increment for dispersion strengthening can be described as the Orowan-Ashby model, which suggests that the finely dispersed second phase is beneficial for the increase of strength. Noticeably, second phase in nano scale in the matrix has simultaneous beneficial influences on the strength and ductility of the materials. Therefore, how to fabricate the nanostructures in terms of matrix and second phase is critical for improving the material performance. This Special Issue plans to give an overview of the most recent advances in the field of nanostructured materials and their specific performances. This Special Issue is aimed at providing selected contributions on advances in the fabrication, characterization, and exploration in strengthening mechanisms as well as formation mechanisms of microstructures of nanostructured materials for structural application. Potential topics include, but are not limited to: Nanocrystalline fabrication; Nanocrystalline strengthening; Fabrication of nano dispersion; Nano dispersion strengthening; Role of nanostructure in structural materials; Mechanisms in microstructural optimization strengthening; Future perspectives for nanostructured materials for structural application.

Dr. Kaixuan Chen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Coatings 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

  • structural materials
  • fabrication
  • nanocrystalline strengthening
  • nano dispersion strengthening
  • microstructure
  • mechanical performance

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Published Papers (3 papers)

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Research

16 pages, 20822 KiB  
Article
Investigation of the Dependence of Electrocatalytic Activity of Copper and Palladium Nanoparticles on Morphology and Shape Formation
by Iliya Petriev, Polina Pushankina, Yuliya Glazkova, Georgy Andreev and Mikhail Baryshev
Coatings 2023, 13(3), 621; https://doi.org/10.3390/coatings13030621 - 14 Mar 2023
Cited by 8 | Viewed by 1870
Abstract
A synthesis strategy for the manufacture of inexpensive highly efficient nanostructured catalysts has been developed. The developed unique nonplatinoid copper-based catalysts with different surface morphology were investigated as a functional layer with high activity in the ethanol oxidation in alkaline media. A modifying [...] Read more.
A synthesis strategy for the manufacture of inexpensive highly efficient nanostructured catalysts has been developed. The developed unique nonplatinoid copper-based catalysts with different surface morphology were investigated as a functional layer with high activity in the ethanol oxidation in alkaline media. A modifying layer with controlled morphology, composition, and excellent electrocatalytic activity was synthesized by electrochemical deposition by varying such synthesis parameters as deposition temperature and time, concentration of structure-forming additives, and electrodeposition current. The dependence of the samples’ electrocatalytic activity on the shaping factors was established. According to the electrochemical study results, the highest current density peak of up to 33.01 mA cm−2, and hence the highest catalytic activity in comparison to other samples, were possessed by a catalyst with a regular cubic particle shape. A catalyst consisting of plate-like nanoparticles with a certain percentage of disclinations had similar, but slightly less activity, with a current density peak of up to 31.59 mA cm−2. The samples’ activity values are 8 times higher for cubic particles and 7.5 times higher for particles with a triangular plate shape than for an unmodified smooth copper film. The developed samples can be considered as quite competitive to platinoid catalysts, which significantly outperform copper analogues. Full article
(This article belongs to the Special Issue Nanostructured Materials for Structural Applications)
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10 pages, 2925 KiB  
Article
Study of Electromagnetic Shielding Properties of Composites Based on Glass Fiber Metallized with Metal Films
by Vladimir Buzko, Maxim Babushkin, Sergey Ivanin, Alexander Goryachko and Iliya Petriev
Coatings 2022, 12(8), 1173; https://doi.org/10.3390/coatings12081173 - 13 Aug 2022
Cited by 5 | Viewed by 2599
Abstract
The article presents the results of an investigation of composites based on manufactured samples of fiberglass metalized with a submicron film made of brass, neusilber and non-magnetic SS304 stainless steel. It was found that, due to their characteristics, the samples of metallized fiberglass [...] Read more.
The article presents the results of an investigation of composites based on manufactured samples of fiberglass metalized with a submicron film made of brass, neusilber and non-magnetic SS304 stainless steel. It was found that, due to their characteristics, the samples of metallized fiberglass are an effective electromagnetic wave-absorbing filler for various building and construction materials; The developed metallized fiberglass samples are also useful for the creation of EMI-shielding building materials for protection from microwave radiation. With an increase in the proportion of metalized glass fiber, the electromagnetic shielding of the studied composites increases systematically. It is determined that at a concentration of 5 wt.% brass-metallized glass fiber, a test composite material with a thickness of 250 mm is able to shield up to 13.7 and 21.2 dB in the 4G and 5G ranges of cellular communication electromagnetic waves, respectively. Full article
(This article belongs to the Special Issue Nanostructured Materials for Structural Applications)
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17 pages, 8468 KiB  
Article
Wear Resistance Mechanism of Sub-Nano Cu3P Phase Enhanced the Cu-Pb-Sn Alloy
by Xiaoyan Ren, Guowei Zhang, Hong Xu, Zhaojie Wang and Yijun Liu
Coatings 2022, 12(5), 682; https://doi.org/10.3390/coatings12050682 - 16 May 2022
Cited by 3 | Viewed by 2032
Abstract
High Cu-Pb-Sn, as the material for bimetallic cylinder block, is widely used in the selection of wear-resistant parts due to its excellent wear reduction, thermal conductivity, fatigue resistance, and strong bearing capacity, such as bearings and bearing bushes, aerospace pump rotor, turbine and [...] Read more.
High Cu-Pb-Sn, as the material for bimetallic cylinder block, is widely used in the selection of wear-resistant parts due to its excellent wear reduction, thermal conductivity, fatigue resistance, and strong bearing capacity, such as bearings and bearing bushes, aerospace pump rotor, turbine and guide plate, etc. However, because its wear resistance is not enough to meet the harsh conditions of high temperature, high speed, and heavy load, the research on high wear resistance Cu-Pb-Sn materials has important theoretical significance and application value for the application of bimetallic materials. ZCuPb20Sn5 alloy was taken as the research object to analyze the influence mechanism of its different microstructure and mechanical properties on the friction and wear properties of alloy materials. Friction experiments under two conditions of oil lubrication and dry friction were carried out on the MMW-1A pin-on-disc friction and wear testing machine. The wear resistance and wear mechanism of ZCuPb20Sn5alloy under the action of Cu3P were discussed, and a high wear-resistant Cu-Pb-Sn alloy for bimetal cylinder block was prepared. The results show that with the increase of P content, both the friction coefficient and wear rate decrease, and the wear reduction of ZCuPb20Sn5 alloy increases. Under oil lubrication conditions, the friction coefficient decreases by 21.4% and the wear rate decreases by 85.5% compared with that without adding P. The friction-reducing and wear-resistant properties of ZCuPb20Sn5 alloy materials are increased. In dry friction and oil lubrication, the mass wear amount of ZCuPb20Sn5 alloy material decreases with the increase of P element addition, and the change rule of alloy wear amount is consistent under the two methods. In the process of friction and wear, adhesive wear occurs, and the wear amount of the alloy material increases. With the increase of P content, the lead particles are refined and evenly distributed, which promotes the formation of a uniform self-lubricating lead film during the friction process and reduces the degree of adhesive wear. The appearance of Cu3P reduces the contact area of the friction surface and weakens the adhesive wear, so the wear rate is reduced. Full article
(This article belongs to the Special Issue Nanostructured Materials for Structural Applications)
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