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Coatings
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Surface Treatments for Stainless Steels
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Surface Treatments for Stainless Steels

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 (20 January 2024) | Viewed by 6279

Special Issue Editor

Prof. Dr. Chi Tat Kwok

E-Mail Website
Guest Editor
Department of Electromechanical Engineering, Faculty of Science & Technology, University of Macau, Macao, China
Interests: corrosion; cavitation erosion and wear of materials; surface engineering; laser surface modification; friction surfacing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Stainless steels are arguably the most widely used class of metallic materials because of their superb resistance to corrosion in a lot of media and their good mechanical properties. The properties of stainless steels (including decoration, reflectivity, hardness, corrosion, erosion and wear resistances, biocompatibility, antibacterial efficacy, etc.) can be further enhanced by surface treatment. This Special Issue is dedicated to highlighting the recent advances and innovations in novel surface-treating processes, processing conditions, and applications for stainless steels. The goal of this Special Issue is to collect original research articles as well as critical reviews and perspectives from academics and industry.

Prof. Dr. Chi Tat Kwok
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

  • mechanical surface treatments
  • thermal surface treatments
  • chemical/electrochemical surface treatments
  • high-energy beam surface treatment
  • diffusion surface treatment
  • other novel surface-treating methods
  • characterization and applications of the surface-treated stainless steels

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Published Papers (3 papers)

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Research

9 pages, 3843 KiB  
Article
Fabrication of a Flower-like Copper Oxide Film-Coated Nanoporous Stainless Steel Using Anodization-Assisted Electrodeposition as a Novel Antibacterial Material
by Hefeng Wang, Naiming Lin, Jiaojiao Zhang, Yiwei Jia and Hongting Zhao
Coatings 2023, 13(4), 782; https://doi.org/10.3390/coatings13040782 - 18 Apr 2023
Cited by 1 | Viewed by 1808
Abstract
In this study, flower-like copper oxide film was prepared on the surface of 316L nanoporous stainless steel (Cu/NPSS) by anodization-assisted electrodeposition. The prepared NPSS and Cu/NPSS were evaluated with Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX) and X-ray diffractometer (XRD). Based [...] Read more.
In this study, flower-like copper oxide film was prepared on the surface of 316L nanoporous stainless steel (Cu/NPSS) by anodization-assisted electrodeposition. The prepared NPSS and Cu/NPSS were evaluated with Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX) and X-ray diffractometer (XRD). Based on local use of common diseases, the antibacterial activity of Cu/NPSS against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) was investigated. The diameters of the as-formed nanopores were about 93 nm at 50 V. Cu film was successfully deposited on the surface of NPSS. The presence of Cu and O was detected in the surface of Cu/NPSS by EDX analyses. The results obtained for Cu/NPSS revealed a marked antibacterial ability. The growth inhibition rates of Cu/NPSS against E. coli and S. aureus were 99.6% and 97.4% within 12 h, respectively. This may be because of the small size and high surface-to-volume ratio of the material in addition to the release of metal ions in solution. Accordingly, Cu/NPSS will help broaden promising applications in fields of biomedical implants and devices. Full article
(This article belongs to the Special Issue Surface Treatments for Stainless Steels)
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18 pages, 6007 KiB  
Article
Direct Energy Depositions of a 17-4 PH Stainless Steel: Geometrical and Microstructural Characterizations
by Cindy Morales, Mattia Merlin, Annalisa Fortini and Alessandro Fortunato
Coatings 2023, 13(3), 636; https://doi.org/10.3390/coatings13030636 - 17 Mar 2023
Cited by 6 | Viewed by 2290
Abstract
Direct energy deposition (DED) is a widely accepted additive manufacturing process and a possible alternative to the subtractive manufacturing processes due to its high flexibility in fabricating new 3D parts. DED enables the manufacture of complex parts without using costly and time-consuming conventional [...] Read more.
Direct energy deposition (DED) is a widely accepted additive manufacturing process and a possible alternative to the subtractive manufacturing processes due to its high flexibility in fabricating new 3D parts. DED enables the manufacture of complex parts without using costly and time-consuming conventional processes, even though building parameters need to be accurately determined. In the present investigation, the effect of different process parameters on geometrical features, quality, microstructure, and microhardness of 17-4 PH stainless steel single tracks deposited onto an AISI 316L stainless steel substrate was investigated. Four sets of process parameters, considering different values of laser power, scanning speed, and powder feed rate, were selected in the manufacturing strategy, and specimens drawn from each single-track deposition were analyzed by stereomicroscopy, optical microscopy (OM), scanning electron microscopy (SEM-EDS), and X-ray diffraction (XRD). The results show that the optimized geometrical features of the track, together with the best microstructural and hardness properties, were obtained with the highest values of the laser energy input. Full article
(This article belongs to the Special Issue Surface Treatments for Stainless Steels)
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14 pages, 6015 KiB  
Article
Study on Using Microbubbles to Reduce Surface Damage of Mercury Target for Spallation Neutron Source
by Xu Sun, Fuzhong Lin, Yanzhen Yang, Yuan Xue, Yongjian Fu, Wei Hang and Shiqing Zou
Coatings 2022, 12(12), 1960; https://doi.org/10.3390/coatings12121960 - 14 Dec 2022
Cited by 1 | Viewed by 1284
Abstract
A liquid mercury target, which is used to explore the neutrons produced by spallation reactions, has been installed at the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). As the proton beams bombard the target, pressure [...] Read more.
A liquid mercury target, which is used to explore the neutrons produced by spallation reactions, has been installed at the Materials and Life Science Experimental Facility (MLF) in the Japan Proton Accelerator Research Complex (J-PARC). As the proton beams bombard the target, pressure waves are generated on the interface between liquid and solid metals due to thermal shock. The negative-pressure-induced cavitation causes severe pitting damage to the vessel surface of the mercury target. To reduce the surface damage of the mercury target and prolong its service life, we developed vibratory horn experiments in bubbly water. In this study, the effect of microbubbles on cavitation damage on the workpiece surface was investigated using ultrasonic erosion tests. Experimental results showed that surface damage was significantly reduced under the condition of injecting microbubbles. Additionally, we developed a simulation code to analyze the change in pressure waves in the water. The analysis results showed that the pressure amplitude of the pressure waves was significantly reduced under the condition of injecting microbubbles, and the fluctuation of the pressure waves became more regular when injecting microbubbles. We also found that the pressure amplitude of the pressure waves was decreased with a decrease in the diameter of the microbubbles. Full article
(This article belongs to the Special Issue Surface Treatments for Stainless Steels)
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