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Nanomaterials
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Structural and Functional Nanocrystalline (NC) Materials
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Structural and Functional Nanocrystalline (NC) Materials

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 3336

Special Issue Editors

Prof. Dr. Xiaoyan Song

E-Mail Website
Guest Editor
Faculty of Materials and Manufacturing, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology, Beijing 100124, China
Interests: metallic nanomaterials; computional materials science; rare-earth magnets; cermets; materials genome engineering
Dr. Zhi Zhao

E-Mail Website
Guest Editor
Faculty of Materials and Manufacturing, Key Laboratory of Advanced Functional Materials, Ministry of Education of China, Beijing University of Technology, Beijing 100124, China
Interests: nanomaterials; photochemistry; additive manufacturing; spectroscopy; composite materials

Special Issue Information

Dear Colleagues,

In recent decades, tremendous efforts have been spent on the development of high-performance nanocrystalline (NC) materials. One of the most intriguing features of NC materials is their potential to obtain outstanding mechanical properties, which is highly desirable for structural materials and engineering applications. In addition to the mechanical aspect, NC materials have also exhibited unique behaviors in their optical, magnetic and chemical properties. Entering the nanometer regime may have a great impact on the wave function of electrons, thus altering the way they interact with light and matter. Recently, a wide variety of applications in chemical sensing, catalysis and energy harvesting has been demonstrated with the use of novel NC materials.  

The present Special Issue of Nanomaterials aims to deliver the state-of-the-art in the field of NC materials. Researches from both traditional and interdisciplinary fields are welcome. Potential topics include, but are not limited to:

  1. Novel preparation methods for NC materials.
  2. Advanced characterization techniques for NC materials.
  3. Fabrication of NC-material-based functional devices.
  4. Theory on scale effects on the properties of NC materials.
  5. Studies on the thermal and structural stabilities of NC materials.
  6. Data-driven design of new-type NC materials.
  7. Additive and subtractive manufacturing of NC materials.

Prof. Dr. Xiaoyan Song
Dr. Zhi Zhao
Guest Editors

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. Nanomaterials is an international peer-reviewed open access semimonthly 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 2900 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

  • nanocrystalline materials
  • preparation methods
  • theoretical model
  • simulations
  • characterization techniques
  • data-driven materials design
  • mechanical performance
  • energy-harvesting
  • chemical sensing
  • catalysis

Published Papers (3 papers)

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Research

13 pages, 4205 KiB  
Article
Effect of Grain Refinement on the Comprehensive Mechanical Performance of W–Cu Composites
by Tielong Han, Chao Hou, Yaochuan Sun, Yurong Li and Xiaoyan Song
Nanomaterials 2023, 13(3), 386; https://doi.org/10.3390/nano13030386 - 18 Jan 2023
Cited by 3 | Viewed by 1157
Abstract
W–Cu composites are commonly subjected to coupled multiple fields in service, which imposes high requirements on their overall performance. In this study, the ultrafine-grained W–Cu composite was fabricated using the combination of electroless plating and spark plasma sintering. The wear resistance and high-temperature [...] Read more.
W–Cu composites are commonly subjected to coupled multiple fields in service, which imposes high requirements on their overall performance. In this study, the ultrafine-grained W–Cu composite was fabricated using the combination of electroless plating and spark plasma sintering. The wear resistance and high-temperature compressive properties of the ultrafine-grained W–Cu composite were investigated and compared with those of the commercial coarse-grained counterpart. Moreover, the underlying strengthening and wear mechanisms were also discussed. Here we show that the ultrafine-grained W–Cu composite exhibits superior integrated mechanical performance, making it a potential alternative to commercial W–Cu composites. Full article
(This article belongs to the Special Issue Structural and Functional Nanocrystalline (NC) Materials)
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14 pages, 7765 KiB  
Article
High-Throughput Predictions of the Stabilities of Multi-Type Long-Period Stacking Ordered Structures in High-Performance Mg Alloys
by Touwen Fan, Zhipeng Wang, Yuanyuan Tian, Yu Liu and Pingying Tang
Nanomaterials 2022, 12(18), 3240; https://doi.org/10.3390/nano12183240 - 18 Sep 2022
Cited by 1 | Viewed by 1286
Abstract
The effects of 44 types of elements on the stabilities of I1-constitute multi-type long-period stacking-ordered (LPSO) structures in Mg alloys, such as 4H, 6H, 8H, 9R, 12H, 15R, and 16H phases, are systematically investigated by first-principle high-performance calculations. The intrinsic stacking-fault energies (ISFEs) [...] Read more.
The effects of 44 types of elements on the stabilities of I1-constitute multi-type long-period stacking-ordered (LPSO) structures in Mg alloys, such as 4H, 6H, 8H, 9R, 12H, 15R, and 16H phases, are systematically investigated by first-principle high-performance calculations. The intrinsic stacking-fault energies (ISFEs) and their increments are calculated along with the formation enthalpies of solute atoms, and interaction energies between solute atoms and LPSO structures. The results suggest that the 15R phase is the easiest to form and stabilize among these LPSO structures, and 44 types of solute atoms have different segregation characteristics in these LPSO structures. A high temperature inhibits structural stabilizations of the LPSO phases, and these alloying elements, such as elements (Sb, Te, and Cs) for 4H; elements (S, Fe, Sb, and Te) for 6H, 8H, 9R, 15R, and 16H; and elements (S, Sb, and Te) for 12H, can effectively promote the stability of LPSO structures at high temperatures. S and Fe atoms are the most likely to promote the stabilities of the 16H structure with regard to other LPSO phases, but the Fe atom tends to inhibit the stabilities of 4H and 12H structures. This work can offer valuable references to further study and develop high-performance Mg alloys with multi-type LPSO structures. Full article
(This article belongs to the Special Issue Structural and Functional Nanocrystalline (NC) Materials)
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15 pages, 3382 KiB  
Article
Predictions on the Phase Constitution of SmCo7−XMx Alloys by Data Mining
by Guojing Xu, Hao Lu, Kai Guo, Fawei Tang and Xiaoyan Song
Nanomaterials 2022, 12(9), 1452; https://doi.org/10.3390/nano12091452 - 24 Apr 2022
Cited by 2 | Viewed by 1549
Abstract
Based on a home-built Sm-Co-based alloys database, this work proposes a support vector machine model to study the concurrent effects of element doping and microstructure scale on the phase constitution of SmCo7-based alloys. The results indicated that the doping element’s melting [...] Read more.
Based on a home-built Sm-Co-based alloys database, this work proposes a support vector machine model to study the concurrent effects of element doping and microstructure scale on the phase constitution of SmCo7-based alloys. The results indicated that the doping element’s melting point and electronegativity difference with Co are the key features that affect the stability of the 1:7 H phase. High-throughput predictions on the phase constitution of SmCo7-based alloys with various characteristics were achieved. It was found that doping elements with electronegativity differences with Co that are smaller than 0.05 can significantly enhance 1:7 H phase stability in a broad range of grain sizes. When the electronegativity difference increases to 0.4, the phase stability becomes more dependent on the melting point of the doping element, the doping concentration, and the mean grain size of the alloy. The present data-driven method and the proposed rule for 1:7 H phase stabilization were confirmed by experiments. This work provides a quantitative strategy for composition design and tailoring grain size to achieve high stability of the 1:7 H phase in Sm-Co-based permanent magnets. The present method is applicable for evaluating the phase stability of a wide range of metastable alloys. Full article
(This article belongs to the Special Issue Structural and Functional Nanocrystalline (NC) Materials)
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