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Special Issue "Wear Resistance and Friction Coatings"

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A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Corrosion, Wear and Erosion".

Deadline for manuscript submissions: 30 November 2023 | Viewed by 7035

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Special Issue Editors

Prof. Dr. Min Kang

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Guest Editor

Department of Mechanical Engineering, College of Engineer, Nanjing Agriculture University, Nanjing 210031, China
Interests: non-traditional machining technology; numerical control technology; agricultural equipment design and manufacturing

Prof. Dr. Xiuqing Fu

E-Mail Website
Guest Editor

Department of Mechanical Engineering, College of Engineer, Nanjing Agriculture University, Nanjing 210031, China
Interests: jet electrodeposition technology; electrochemical machining technology; plant phenomics

Special Issue Information

Dear Colleagues,

Among the latest research achievements in multifunctional coatings is the study of wear resistance, and friction reduction coatings are one of the most valuable coatings research directions in the field of materials science and engineering. Current applications range from cutting tools, machining technology, automotive, and aerospace. In harsh environmental conditions, the theory, experiment, and application of wear and friction reduction are in great demand.

We would like to invite you to submit your new research results to this Special Issue entitled Wear Resistance and Friction Coatings. The properties of the surface are determined by the material used to prepare the coating and the method and technique used to treat it, so coating technology can be considered an advanced surface treatment. The topics of interest for this Special Issue are advanced surface treatment technologies and green coating materials. We hope that our research will evaluate not only the effects of surface coating technology on the physical and mechanical properties of coatings but also the effects of friction mechanisms and environmental friendliness.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

Coating material and preparation technology
Forming mechanism of coating
Tribological behavior
Effect of surface treatment on wear resistance
Effect of surface treatment on corrosion resistance
Effect of surface treatment on hardness
Green paint technology

We look forward to receiving your contributions.

Prof. Dr. Min Kang
Prof. Dr. Xiuqing Fu
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. 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

surface treatment
the forming mechanism
wear resistance
tribological property
hardness
corrosion resistance
environmental protection coating

Published Papers (6 papers)

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Research

Open AccessArticle

Microstructural Properties of Particle-Reinforced Multilayer Systems of 316L and 430L Alloys on Gray Cast Iron

Mohammad Masafi

Heinz Palkowski

and

Hadi Mozaffari-Jovein

Coatings 2023, 13(8), 1450; https://doi.org/10.3390/coatings13081450 - 17 Aug 2023

Viewed by 451

Abstract

Gray cast iron (GJL) is known for its excellent damping property and high thermal conductivity, thanks to its unique lamellar graphite and pearlite structure. In a recent study, laser metal deposition (LMD) was explored as a potential process to enhance the corrosion resistance and wear mechanism of this tribological system. The focus was on laser cladding of gray cast iron using two different of stainless-steel materials, namely 430L and 316L, combined with TiC and WC particles. To create the samples, a multilayer coating system was employed. A comparative analysis of the microstructures was performed to understand the interaction of the laser beam with the material (composite materials). Surface properties were then characterized using light microscopy and electron microscopy (SEM) before and after subjecting the samples to a shock corrosion test, simulating automotive conditions. Additionally, phase analyses were performed at the interfaces between the coatings and the substrate, with particular attention given to the behavior of the graphite lamellae at these interfaces. This study aims to provide valuable insights into the potential improvements that can be achieved through laser cladding on gray cast iron, specifically in terms of corrosion resistance and wear mechanisms. By analyzing the microstructures and surface properties, researchers can gain a better understanding of the performance and durability of the coated samples. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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Open AccessArticle

Effect of Nanoparticle Concentration on the Performance of Ni-Co-β-SiC Composite Coatings Electrodeposited on the Surface of Spindle Hook Teeth

and

Coatings 2023, 13(2), 422; https://doi.org/10.3390/coatings13020422 - 13 Feb 2023

Viewed by 900

Abstract

This study aimed to improve the surface hardness and wear resistance of spindle hook teeth with special shapes to reduce the cost of replacing the spindle on cotton pickers. For this goal, a Ni-Co-β-SiC composite coating with different concentrations of β-SiC nanoparticles (0, 1, 2, 3, and 4 g/L) was electrodeposited on the surface of spindle hook teeth. The hardness, elemental composition, and micromorphology of the spindle hook teeth were characterized by microhardness tests, an energy spectrum analyzer, and a scanning electron microscope after cutting with the spindles. The actual wear process of the coating was determined by wear simulation and scratch wear tests, and the effect of the concentration of β-SiC nanoparticles on the properties of the coating was investigated. The results show that Ni-Co-β-SiC composite coating has a typical cellular structure. The hardness first increases and then decreases, and the wear resistance (including friction coefficient, scratch area, and shape of wear area) first decreases and then increases, mainly due to the pinning role and agglomeration of β-SiC nanoparticles. When the concentration of β-SiC was 1 g/L, the hardness reached a maximum of 506.2 HV0.1, the coefficient of friction reached a minimum of 0.13, and the wear area and wear micromorphology reached the most suitable values. Therefore, this Ni-Co-β-SiC composite coating had the best microhardness and wear resistance. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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Open AccessArticle

Microstructure and Tribological Properties of Fe-Based-Al₂O₃-B₄C Composite Coatings Prepared by High-Velocity Arc Spraying

Joseph Ndiithi Ndumia

and

Jitao Liu

Coatings 2022, 12(12), 1956; https://doi.org/10.3390/coatings12121956 - 13 Dec 2022

Cited by 1 | Viewed by 704

Abstract

Fe-based-Al₂O₃-B₄C coating was prepared on the low-carbon steel substrates using high-velocity arc spraying. The effects of voltage, current, and distance on the porosity and microhardness of the coating were studied by an orthogonal test, and the optimum spraying parameters were determined. The microstructure and properties of Fe-based-Al₂O₃-B₄C coatings prepared under optimum process parameters were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), microhardness and friction wear tester. The results showed that the optimum process parameters were a spraying voltage of 41 V, a spraying current of 200 A, and a spraying distance of 150 mm. The porosity was 2.24 ± 0.32%, and the microhardness was 1543 ± 145 Hv_0.1, which was 8 times that of the substrate. Under the same load of 4.2 N and varying sliding speeds of 500 t/min, 750 t/min, and 1000 t/min, the coefficient of friction of the coating was less than that of the low-carbon steel, and the wear rate of the coating was 65%, 70%, and 63% lower than that of the low-carbon steel, respectively. The main wear mechanism of the coating was material spalling, accompanied by slight oxidative wear and abrasive wear. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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Open AccessArticle

Microstructure, Wear and Corrosion Behaviors of Electrodeposited Ni-Diamond Micro-Composite Coatings

and

Coatings 2022, 12(10), 1391; https://doi.org/10.3390/coatings12101391 - 23 Sep 2022

Cited by 1 | Viewed by 919

Abstract

For the micro-milling of hard and brittle materials, to avoid crack formation, a tool with ductile milling mode is required. Composite electrodeposition technology was used to prepare a Ni–diamond coating on the surface of brass. The surface microstructure, composition and surface roughness of the coating were studied with a scanning electron microscope, X-ray diffractometer and roughness tester. The adhesion strength was studied by scratch test, the wear resistance was analyzed by wear test, and the corrosion resistance was investigated by Tafel curves and electrochemical impedance spectra (EIS). It was found that the distribution of diamond particles of the Ni–diamond coating was relatively uniform, and the content was relatively high. The internal stress of the coating prepared by the composite electrodeposition technology was very low. With the incorporation of the diamond particles, the surface roughness of the coating tended to decrease. The wear experiment showed that the wear scar diameter of the corresponding glass ball for the Ni coating was 1.775 mm and the roughness was 13.88 ± 2.811 µm, while that for the Ni–diamond coating was 2.680 mm and 8.35 ± 0.743 µm, respectively, indicating that the tool coating with uniform diamond particles had a strong ability to process workpieces with significantly improved surface quality. The particle press-in mechanism not only improved the wear resistance of the coating, but helped to prolong the service life of the tool. The results of the EIS test and Tafel curves showed that the Ni–diamond coating had a lower corrosion current, and the corrosion resistance of the coating surface was improved. The experimental results showed that the micro-diamond coating prepared by the composite electrodeposition technology had good bonding strength, low internal stress, and significantly improved wear resistance and corrosion resistance. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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Open AccessArticle

Research on the Wear Characteristics of the Hook Teeth of Cotton Pickers

and

Coatings 2022, 12(6), 762; https://doi.org/10.3390/coatings12060762 - 01 Jun 2022

Cited by 6 | Viewed by 1438

Abstract

As a key core component of cotton pickers, the spindle is prone to wear of the hook teeth. This research explores the wear characteristics of the spindle hook teeth of cotton pickers under different working areas. The sampled spindles were cut, the element composition and hardness of the spindle hook tooth coating and substrate were determined, the surface morphology of the spindle hook tooth was characterized, and its wear area and coating thickness were extracted. Results show that the main constituent elements of the coating and substrate are Cr and Fe, respectively, the hardness of the coating is about 1020 HV_0.1, and the hardness of the substrate is 470~840 HV_0.1. During the field operation, scratches appeared on the surface of the coating, the coating thickness layer gradually decreased, and the coating peeled off as the operating area increased. Afterward, scratches and oxidized particles appeared on the surface of the substrate, the wear rate accelerated, and the wear area gradually increased. The wear of the spindle hook teeth started to appear from the front and rear tooth tips up to the tooth edge, the back of the tooth, and the doffering edge, hence forming a long boot-shaped wear area. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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Open AccessArticle

Influence of Heat Treatment on the Microstructure and Wear Properties of Arc-Sprayed FeCrAl/Al Coating

Joseph Ndiithi Ndumia

and

Coatings 2022, 12(3), 374; https://doi.org/10.3390/coatings12030374 - 11 Mar 2022

Cited by 2 | Viewed by 1517

Abstract

Intermetallic compounds formed during heat treatment of alloy coatings affect the coating structure and properties. In order to determine the phase changes and coating performance, FeCrAl (Fe Bal., Cr 26 wt.%, Al 6 wt.%) and Al (99.9 wt.%) coating was sprayed onto low carbon steel substrates and subsequently heat-treated at different temperatures. The effects of heat treatment on the microstructure, phase composition, tensile bonding strength, microhardness, and wear properties of the coatings were analyzed. The as-sprayed coating had a dense, layered structure with an average porosity of 3.6%. The microhardness of the as-sprayed coating was comprised of hard FeCrAl splats and ductile Al splats with an average microhardness value of 494 HV_0.1. The coating at 300 °C had the highest tensile strength of 37.5 MPa. At 500 °C, FeAl intermetallic compounds formed at the phase boundaries due to the diffusion of elements. The coating microhardness and wear resistance were affected by the uniform coating structure and the precipitation of FeAl intermetallic compounds. Compared with the annealed coatings, the as-sprayed coating had the lowest wear rate. Full article

(This article belongs to the Special Issue Wear Resistance and Friction Coatings)

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