Special Issue "Advances in Characterization of Heterogeneous Metals/Alloys"

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

Deadline for manuscript submissions: 30 November 2019.

Special Issue Editor

Guest Editor
Dr. Akira Otsuki

Ecole Nationale Supérieure de Géologie, GeoRessources UMR 7359 CNRS, University of Lorraine, 2 Rue du Doyen Marcel Roubault, BP 10162, 54505, Vandoeuvre-lès-Nancy, France
Website | E-Mail
Interests: non-destructive characterization; selective material recovery; colloid and interface; sustainability and circular economy

Special Issue Information

Dear Colleagues,

This Special Issue aims to provide a good forum for scientists and engineers to share and discuss their pioneering original findings or insightful reviews on the characterization of heterogeneous metals/alloys. Reports on the development of a new characterization method and/or the application of multiple and complementary characterization methods towards the enhancement of process and application of metals and/or alloys are particularly welcome.

Proper characterization of heterogeneous materials is a challenging task, since the majority of characterization methods analyze either the average characteristics of the whole material or a narrow area of specific interest [1]. This could overlook the correlation between the microscopic structure of fine grains and the macroscopic mechanical behavior of metals/alloys, for example. Such correlations were found to be useful in many different aspects, while research gaps have been identified in terms of the advancement of characterization methods. On the other hand, gaining a better understanding of heterogeneous metals/alloys is of great importance from scientific and engineering points of view, since processing, and producing and applying, these materials, including advanced technologies (e.g. batteries, printed circuit boards), is vital to our modern society.

References

  1. Otsuki, A.; Chen, Y.; Zhao, Y. Characterisation and beneficiation of complex ores for sustainable use of mineral resources: Refractory gold ore beneficiation as an example. Int. J. Soc. Mat. Eng. Res. 2014, 20, 126–135.

Prof. Akira Otsuki
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 papers will be 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. 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 1500 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

  • In-situ measurement
  • Operando measurement
  • Neutrons, X-rays
  • Imaging (e.g., SEM, TEM, and tomography/radiography)
  • Surface analysis (e.g., AFM, STM, XPS, XAFS, reflectometry, and mass spectrometry)
  • Complexity and functionality
  • Microstructure and mechanical properties

Published Papers (2 papers)

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Research

Open AccessFeature PaperArticle
Selective Milling and Elemental Assay of Printed Circuit Board Particles for Their Recycling Purpose
Metals 2019, 9(8), 899; https://doi.org/10.3390/met9080899 (registering DOI)
Received: 18 July 2019 / Revised: 2 August 2019 / Accepted: 12 August 2019 / Published: 16 August 2019
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Abstract
Selective/preferential milling of printed circuit board (PCB) particles followed by non-destructive characterization of the mill products was performed in order to understand the effects of different feed masses into a hammer mill and different milling time on the metal recovery and enrichment ratio. [...] Read more.
Selective/preferential milling of printed circuit board (PCB) particles followed by non-destructive characterization of the mill products was performed in order to understand the effects of different feed masses into a hammer mill and different milling time on the metal recovery and enrichment ratio. Those are important variables affecting and determining the process performance and capacity. The milling tests and elemental assay characterization were conducted by using a hammer mill and a portable X-ray fluorescence analysis (XRF), respectively. The results showed the preferential metal concentration/enrichment was achieved for several elements and their degree was varied depending on the parameters. Using the experimental data, predictive models of metal recovery were developed and the global trend of metal recoveries was observed under different mill feed and milling time and discussed. Full article
(This article belongs to the Special Issue Advances in Characterization of Heterogeneous Metals/Alloys)
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Open AccessArticle
Tensile Properties and Corrosion Resistance of Al-xFe-La Alloys for Aluminium Current Collector of Lithium-Ion Batteries
Metals 2019, 9(6), 706; https://doi.org/10.3390/met9060706
Received: 30 May 2019 / Revised: 13 June 2019 / Accepted: 18 June 2019 / Published: 24 June 2019
PDF Full-text (6274 KB) | HTML Full-text | XML Full-text
Abstract
Al-xFe-La alloys (x = 0.07, 0.1, 0.2) for aluminum current collectors of lithium-ion batteries were prepared and the microstructure of Al-0.07Fe-0.07La, Al-0.1Fe-0.07La and Al-0.2Fe-0.07La aluminum alloys were observed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The experimental results showed that with [...] Read more.
Al-xFe-La alloys (x = 0.07, 0.1, 0.2) for aluminum current collectors of lithium-ion batteries were prepared and the microstructure of Al-0.07Fe-0.07La, Al-0.1Fe-0.07La and Al-0.2Fe-0.07La aluminum alloys were observed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS). The experimental results showed that with the increase of Fe content, the size of the second phases in Al-xFe-0.07La alloys became finer and more dispersed and that the microstructure of the alloy had improved. The strength and corrosion resistance of Al-xFe-La alloys were studied by tensile tests and electrochemical tests and the morphological investigations of samples were also conducted by SEM and EDS. With the increase of Fe content, the strength and corrosion resistance of Al-xFe-La alloys became better. Compared to Al-0.07Fe-0.07La alloy, the yield strength and tensile strength of the Al-0.2Fe-0.07La alloy increased by 51.19% and 58.48% respectively, and the elongation increased by 88.41%. Moreover, Al-0.2Fe-0.07La alloy had much more positive corrosion potential and much smaller corrosion current than those of Al-0.07Fe-0.07La alloy. Full article
(This article belongs to the Special Issue Advances in Characterization of Heterogeneous Metals/Alloys)
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