Superhard Coating Materials and Deposition Technology

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 1261

Special Issue Editor


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Guest Editor
Department of Mechanical Engineering, Atatürk Üniversitesi, Erzurum, Turkey
Interests: thin-film coatings for defence applications; solid lubricant thin films (MoS2-Ti/Nb, WS, h-BN, a:C); high-temperature abrasion-resistant thin films (DLC, TiB2, c-BN, CrYN:Me); shape memory thin film (TiNi)

Special Issue Information

Dear Colleagues,

I would like to invite you to submit your work to this Special Issue, "Superhard Coating Materials and Deposition Technology" in journal Coatings.

Today, technological outputs are strategic products that are light in weight but heavy in value. Superhard thin film coatings with high adhesion values are essential to increasing the wear resistance on the surface of machine elements used in aggressive environments. While the hardness values of many engineering materials used in volume / mass are in the range of 15-25GPa, in many engineering applications serving in aggressive environments, ultra-hardness values (<45 GPa) are needed. Due to the ongoing intense R&D studies on synthesizing single- and/or multi-layer-graded nanostructured composite/ceramic thin-film coatings, today it is possible to see technological information transformed into coated products through the hybrid use of developments in coating technologies.

This Special Issue aims to publish original research articles, reviews, etc., from leading researchers in both academia and industry concerning the latest developments in architectural structural design, synthesis of ultra-hard coatings and the applicability of technological knowledge to industrial products.

The scope of this Special Issue will consist of the following concepts:

  • Advanced coating technologies for the production of thin/thick functional coatings;
  • Advanced ultra-hard coatings for aggressive environments;
  • Novel architecture thin-film coatings for surface functionalization;
  • New nano- and microstructural–mechanical–tribological and chemical methods for the characterization of ultra-hard coatings.
  • Advanced industrial applications of hybrid coatings for surface functionalization.

Prof. Dr. İhsan Efeoǧlu
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

  • ultra-hard coatings
  • aggressive environments
  • advanced hybrid coatings technologies

Published Papers (1 paper)

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Research

19 pages, 22872 KiB  
Article
The Role of Period Modulation on the Structure, Composition and Mechanical Properties of Nanocomposite Multilayer TiAlSiN/AlSiN Coatings
by Stefan Kolchev, Lilyana Kolaklieva, Vasiliy Chitanov, Tetiana Cholakova, Ekaterina Zlatareva, Daniela Kovacheva, Genoveva Atanasova and Roumen Kakanakov
Coatings 2023, 13(9), 1546; https://doi.org/10.3390/coatings13091546 - 4 Sep 2023
Cited by 2 | Viewed by 969
Abstract
This paper presents the results of the investigation of a multilayer TiAlSiN/AlSiN coating. A novel coating architecture with a period consisting of nanocomposite sublayers of TiAlSiN and AlSiN was developed. We discovered that the combination of a harder sublayer with a more elastic [...] Read more.
This paper presents the results of the investigation of a multilayer TiAlSiN/AlSiN coating. A novel coating architecture with a period consisting of nanocomposite sublayers of TiAlSiN and AlSiN was developed. We discovered that the combination of a harder sublayer with a more elastic one allows for obtaining a suitable combination of superhardness and enhanced toughness. The coating was deposited by cathodic arc technology. The EDS, XRD, and XRS analyses revealed that the nanocomposite structure is composed of TiAlSiN and AlSiN nanocrystallites, with sizes of 12–13 nm and 4–5 nm, respectively. The nanograin phase is incorporated in an amorphous Si3N4 matrix. The achieved structure causes the presence of four factors contributing to the hardness increase: nanocomposition, solid solution, refinement hardening, and the formation of many interfaces. An instrumented indentation test was used to investigate the mechanical properties. The developed coating possesses a superhardness of 49.5 GPa and a low elastic modulus of 430 GPa, resulting in an improved elastic strain resistance of 0.11, a plastic deformation resistance of 0.58 GPa, and an elastic recovery of 68%. These results imply that the developed coating combines high stability with mechanical degradation under external influence and provides an improved ability to absorb energy at deformation before fracture, and high elastic recovery. The investigation of the effect of the period modulation on the structure, composition, and mechanical properties of the nanocomposite multilayer TiAlSiN/AlSiN coating showed that the superhardness was due to the nanocomposite and solid solution hardening rather than the increased number of interfaces. The demonstrated combination of superhardness with high elasticity and improved toughness determines the developed nanocomposite TiAlSiN/AlSiN coating as very suitable for industrial applications such as high speed and dry machining. Full article
(This article belongs to the Special Issue Superhard Coating Materials and Deposition Technology)
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