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Coatings
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Nanocomposite Thin Film and Multilayers: Properties and Performance
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Nanocomposite Thin Film and Multilayers: Properties and Performance

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Thin Films".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 1863

Special Issue Editors

Dr. Yue Liu

E-Mail Website
Guest Editor
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
Interests: physical vapor deposition of thin films; oxide and nitride nanocomposites; metal matrix composites; multi-scale characterization and modeling
Special Issues, Collections and Topics in MDPI journals
Dr. Jiamiao Ni

E-Mail Website
Guest Editor Assistant
State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: chemical and physical vapor deposition of thin films; electrical properties; graphene; metallic composites; electronic behaviors

Special Issue Information

Dear Colleagues,

Nanocomposite thin films provide extraordinary structural flexibility to manipulate mechanical and functional properties that are sensitive to defect, strain, dimensionality and interface. For structural materials, nanocomposite coatings may enhance the strength and wear resistance, and stability under extreme environment. Heterostructure interfaces affect dislocation gliding, twin boundary migration and crack initiation, which play important role on mechanical property enhancement. For functional materials, heterostructure interfaces allow to explore the strong interplay between lattice, orbital, charge and spin degrees of freedom, which could create emerging electronic or magnetic states with exciting functionalities. With the keys advantage of flexible interface design and phase coupling, nanocomposite thin films have received extensive attention in the search for next-generation structural and functional materials. To facilitate this process, research efforts are highly required from in-depth understanding of structure-property relationships and corresponding quantification methods.

Potential topics include, but are not limited to:

  • Design, growth and characterization of nanocomposite thin film and multilayer coatings
  • Metallic-based nanocomposite thin films and corresponding properties
  • Ceramic based nanocomposite thin films and corresponding properties
  • Nanocomposite thin film performance under extreme environment
  • Recent method advances in properties and performance assessment

This special issue covers a broad range of topics from property measurement, material design and synthesis, advanced characterization, and performance evaluation. We call for contributions of original research articles as well as reviews and perspectives which cover most recent advances in relative fields.

Dr. Yue Liu
Guest Editor

Dr. Jiamiao Ni
Guest Editor Assistant

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

  • nanocomposite thin films
  • defect and interface
  • surface and roughness
  • vapor deposition
  • materials properties

Published Papers (2 papers)

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Research

19 pages, 2283 KiB  
Article
Radio-Frequency Conductivity Evaluation Method Based on Surface/Interface Scattering of Metallic Coatings
by Chongxiao Guo, Ping Wu, Yue Liu and Tongxiang Fan
Coatings 2024, 14(5), 599; https://doi.org/10.3390/coatings14050599 - 10 May 2024
Viewed by 323
Abstract
Developing non-destructive evaluation methods for the radio frequency (RF) conductivity of conductive coatings can accelerate the performance evaluation and development of wireless communication devices. By using a split-resonator cavity to compare 800 nm copper/graphite and 1000 nm copper/graphite, we found that the RF [...] Read more.
Developing non-destructive evaluation methods for the radio frequency (RF) conductivity of conductive coatings can accelerate the performance evaluation and development of wireless communication devices. By using a split-resonator cavity to compare 800 nm copper/graphite and 1000 nm copper/graphite, we found that the RF conductivity increased by 45.5% and 82.7%, respectively, from 15 GHz to 40 GHz (pure copper was −7.2%), indicating that the bulk materials analysis method is not suitable for coating materials. Combined with electromagnetic wave theory, we believe that the critical factor lies in the additional losses of the electromagnetic waves at the copper/graphite interface and substrate. Based on the skin depth theory, the concept of triple skin depth is proposed to calculate the power loss of copper/graphite at different frequencies, considering rough Peff (including the power loss of the rough surface, copper coatings, copper/graphite interface, and graphite) compared with smooth pure copper Pc. Combined with the relationship between RF conductivity and electromagnetic wave power loss, the conductivity of copper coatings σCu at different frequencies is obtained by analyzing the measured σeff. Compared with the roughness model, the calculation error decreased from 30% to below 7%. Our study provides a theoretical basis for the regulation of the RF conductivity of metal coatings at different frequencies. Full article
(This article belongs to the Special Issue Nanocomposite Thin Film and Multilayers: Properties and Performance)
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14 pages, 13488 KiB  
Article
Microstructure, Texture and Mechanical Properties of Al-SiC Composite with Bimodal Structure Fabricated by Multi-Layer Accumulative Roll Bonding
by Shengcheng Zhang, Liqun Wei, Bin Fu and Yanhui Guo
Coatings 2023, 13(3), 512; https://doi.org/10.3390/coatings13030512 - 25 Feb 2023
Cited by 1 | Viewed by 1150
Abstract
A multi-layer accumulative roll bonding (MARB) process was applied to fabricate Al-1 vol% SiC composite (M3) with bimodal structure consisting of 1.07 μm ultrafine grain layers and 0.48 μm finer grain layers. The differences in microstructure, texture and mechanical properties of the M3 [...] Read more.
A multi-layer accumulative roll bonding (MARB) process was applied to fabricate Al-1 vol% SiC composite (M3) with bimodal structure consisting of 1.07 μm ultrafine grain layers and 0.48 μm finer grain layers. The differences in microstructure, texture and mechanical properties of the M3 samples were systematically compared with conventional MARB-processed Al (M1) and bimodal Al (M2) samples. Optical microscopy (OM), scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) analysis were used to characterize the microstructure evolution of the composites, while the mechanical properties were analyzed by tensile and microhardness tests. As revealed by EBSD results after three cycles, the M3 samples had a bimodal grain structure of 0.48 and 1.07 μm. The texture components of the M3 samples were Brass {011} <211>, S {123} <634>, Cube {001} <100> and Copper {112} <111>. According to SEM observation, ductile fracture of M3 was characterized by acicular dimple and circular micropores. Bimodal Al-SiC composites with high strength (225 MPa) and elongation (13%) were finally synthesized after three cycles. Compared with M1 sheets, the strength and elongation of the M3 sheets increased by 23.2% and 7.4%, respectively, indicating that the M3 samples achieved a synergistic improvement in strength and plasticity. Full article
(This article belongs to the Special Issue Nanocomposite Thin Film and Multilayers: Properties and Performance)
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