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Coatings
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Surface Modification of Materials by Laser Processing
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Surface Modification of Materials by Laser Processing

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

Deadline for manuscript submissions: 31 August 2024 | Viewed by 822

Special Issue Editor

Dr. Manuela Pacella

E-Mail Website
Guest Editor
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK
Interests: laser surface engineering; advanced materials; advanced machining; laser texturing; laser cleaning; laser polishing; selective laser melting

Special Issue Information

Dear Colleagues,

Laser technology is widely adopted from various manufacturing industries for cutting, welding, texturing, roughing, and finishing operations, enabling the production of semi-finished/finished parts for the manufacturing of tighter tolerance components in the automotive and aerospace sectors, or in hybrid technologies, such as assisted precision machining. In recent years, industry has shown more interest in the laser surface engineering (LSE) of a wide range of materials (including metals, ceramics, polymers, and natural materials). LSE enables the tailoring of material properties to end user requirements via a change in topography and microstructure or a change in both microstructure and chemistry; however, laser surface engineering is strongly dependent on the functional properties required by the application (friction, hydrophobicity/hydrophilicity, hardness, etc.).

This Special Issue is devoted to publishing original research and high-quality review articles relevant to recent advances in the surface modification of materials by laser processing. Potential topics for this Special Issue will include, but are not limited to, the following:

  • Recent developments in laser processing related to surface engineering, such as cladding, ablation, texturing, polishing, selective laser melting, etc.
  • Novel laser surface modification technologies to functionalize the properties of the surface target.
  • Fundamental studies on laser–material interaction.
  • Evaluation of surface integrity post-laser surface modification.

Dr. Manuela Pacella
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

  • laser surface engineering
  • laser surface modification
  • laser cladding
  • selective laser melting
  • laser–material interaction
  • laser ablation
  • laser texturing
  • laser polishing

Published Papers (1 paper)

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Research

28 pages, 15288 KiB  
Article
Surface Texturing and Wettability Modification by Nanosecond Pulse Laser Ablation of Stainless Steels
by Jialin Dong, Yang Liu and Manuela Pacella
Coatings 2024, 14(4), 467; https://doi.org/10.3390/coatings14040467 - 12 Apr 2024
Viewed by 638
Abstract
Laser surface texturing has attracted growing interest, particularly in functional surface modification. Lasers with nanosecond pulse widths and infrared wavelengths are commonly used for metallic surface texturing because of their low cost and potential for fabricating a large range of textures. In this [...] Read more.
Laser surface texturing has attracted growing interest, particularly in functional surface modification. Lasers with nanosecond pulse widths and infrared wavelengths are commonly used for metallic surface texturing because of their low cost and potential for fabricating a large range of textures. In this research, a laser with a nanosecond pulse width and infrared wavelength was used for the surface texturing of 316 stainless steels. Standard grooved and near-isotropic surface textures, as well as novel porous texture and feather-like dendrite texture, were fabricated through single-time laser texturing. Water contact angle tests were performed on the post-process surfaces, and they showed wettability changes from superhydrophilic to superhydrophobic according to different types of textures. Discussion on the relationship between water contact angle and surface roughness, groove width/depth ratio, surface carbon and oxygen contents indicated that it is the surface morphology that impacts changes in wettability. The comprehensive formation mechanism of different textures and the wettability control mechanism through different textures have been systematically discussed. For the first time, the three-level (point-line-area) laser surface ablation mechanism has been established. The proposed findings can be used for future laser texturing process designs on metals using lasers with a nanosecond pulse width and an infrared wavelength for various applications including wettability modification. Full article
(This article belongs to the Special Issue Surface Modification of Materials by Laser Processing)
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