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Advances in Lubricated Coatings: Preparation, Properties and Applications
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Advances in Lubricated Coatings: Preparation, Properties and Applications

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

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1664

Special Issue Editor

Dr. Lu Tie

E-Mail Website
Guest Editor
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: advanced lubricated coatings; superwetting; lubrication; tribology; mechanics; surface engineering and coating technology

Special Issue Information

Dear Colleagues,

Advanced Lubricated Coatings (ALCs) offer a wide range of research and development potential due to their outstanding properties. Here, we mainly report on the tribological design, tribological chemistry, lubricate materials and tribological surface engineering behind such coatings. The limited materials for surface technology ensures that a sustainable and demand-oriented ecological and economical approach is utilized when it comes to applied research. The large number of potential processing technologies enables for the realization of coating systems for different scale ranges. However, there is still a great need for a profound understanding of process–microstructure–property relationships. The central focus of this Special Issue is on current development trends for ALCs in the fields of mechanics, surface engineering and coating technology, as well as surface functionalization and finishing.

In particular, the topics of interest include but are not limited to:

  • Mechanical science and technology;
  • Computational modeling and simulation;
  • Coating processes;
  • Material science and engineering, physics, chemistry, mechanics and other cross-disciplines.

Dr. Lu Tie
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

  • mechanics
  • computational modeling and simulation
  • coating technology
  • superwetting
  • lubrication
  • surface engineering

Published Papers (2 papers)

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Research

12 pages, 1858 KiB  
Article
Flow and Influencing Factors of Coated Slag in Continuous Casting Mold
by Fengming Du, Shanjiao Wang and Gengtao Zheng
Coatings 2023, 13(10), 1693; https://doi.org/10.3390/coatings13101693 - 27 Sep 2023
Viewed by 892
Abstract
In the continuous casting, the protective slag is coated on the surface of the molten steel, which is an important factor affecting the quality of the billet. The liquid slag layer on the surface of molten steel should be kept at an appropriate [...] Read more.
In the continuous casting, the protective slag is coated on the surface of the molten steel, which is an important factor affecting the quality of the billet. The liquid slag layer on the surface of molten steel should be kept at an appropriate thickness to ensure a sufficient supply of liquid slag and to prevent slag from becoming entangled in the billet shell. Moreover, the consumption of protective slag should be appropriate to ensure stable liquid slag film thickness and uniform heat transfer between the casting billet and the mold. In this work, a two-dimensional numerical calculation model using volume of fluid method was established for the flow of protective slag, the Navier–Stokes equation was solved for the model, the consumption of protective slag during a vibration cycle was calculated, and the effects of factors such as casting speed, amplitude, and vibration frequency on the consumption of protective slag were explored. The results showed that when the casting speed increased from 1.2 m/min to 1.6 m/min, the consumption of protective slag per unit area decreased by about 4.76%, but the consumption of protective slag per unit length of the casting billet increased by about 26.98% within a vibration cycle. The consumption of protective slag per unit area and per unit billet length within a vibration cycle increased slightly with the increase of amplitude. The variation pattern of the consumption of protective slag with vibration frequency was not obvious. This model can provide theoretical basis and technical guidance for the design of protective slag, thereby improving the quality of steel billets in steel plants. Full article
(This article belongs to the Special Issue Advances in Lubricated Coatings: Preparation, Properties and Applications)
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12 pages, 4133 KiB  
Article
Analysis of Flow and Fluctuation Characteristics in Coated Slag Using a 2D Model in the Meniscus Region of Mold
by Fengming Du, Yunbo Zeng, Shanjiao Wang and Gengtao Zheng
Coatings 2023, 13(10), 1678; https://doi.org/10.3390/coatings13101678 - 25 Sep 2023
Cited by 1 | Viewed by 602
Abstract
Steel is mainly produced through continuous casting; molten steel flows into the mold from the tundish, where it cools and then enters the secondary cooling zone, ultimately solidifying into a billet. During the continuous casting production process, the quality of the casting billet [...] Read more.
Steel is mainly produced through continuous casting; molten steel flows into the mold from the tundish, where it cools and then enters the secondary cooling zone, ultimately solidifying into a billet. During the continuous casting production process, the quality of the casting billet is mainly related to the lubrication state of the coated slag. In the upper part of the mold, the consumption of liquid protective slag directly affects the friction state of the initial solidified billet shell. Therefore, the flow and fluctuation characteristics of coated slag in the meniscus area are very important. There is limited research on the flow and fluctuation characteristics of coated slag in the meniscus area, and little consideration has been given to the shape of the meniscus. In this work, a two-dimensional numerical model for the flow and fluctuation of coated slag in the meniscus region was established, and the transient flow velocity of protective slag and molten steel at each moment of the vibration cycle was obtained, as well as the fluctuation of the slag/steel interface in the meniscus region. The results show that when the surface mold vibrated upwards, the protective slag in the meniscus area flowed clockwise. When the mold moved downwards, the protective slag in the slag pool generated a counterclockwise flow vortex. When the mold was in a positive slip state, the negative pressure formed by the upward flow of the protective slag on the meniscus and the inertia force of steel liquid pushed the meniscus toward the inner wall of the mold. During negative slip, the flow of coated slag generated positive pressure on the slag/steel interface, pushing the meniscus toward the steel liquid, and at the initial moment of negative slip, the steel liquid overflowed into the slag channel. This model could provide a theoretical basis for the flow control of protective slag. Full article
(This article belongs to the Special Issue Advances in Lubricated Coatings: Preparation, Properties and Applications)
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