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Advances in Cold Gas Spraying Technology: Expanding Boundaries in Coating...
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Advances in Cold Gas Spraying Technology: Expanding Boundaries in Coating and Additive Manufacturing of Materials

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: closed (10 May 2024) | Viewed by 2861

Special Issue Editor

Dr. Vicente Albaladejo

E-Mail Website
Guest Editor
Thermal Spray Center, Department of Materials Science and Engineering, Faculty of Chemistry, University of Barcelona, 08028 Barcelona, Spain
Interests: thermal spraying; surface engineering; cold gas spray; additive manufacturing; corrosion and wear protection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Cold gas spraying (CGS) has emerged as a promising technology for the deposition of a wide range of materials onto various substrates, offering numerous advantages over conventional thermal spraying techniques. This Special Issue aims to highlight recent advancements in CGS technology and its applications in the fields of coating and additive manufacturing.

The Special Issue features contributions from experts in the field who present novel research findings, innovative methodologies, and industrial applications of CGS. The selected papers encompass a diverse range of materials, including metals, alloys, polymers, ceramics, and composites, providing a comprehensive overview of the current state of the art in CGS technology.

The topics covered in this Special Issue include, but are not limited to:

  • Characterization of CGS coatings: microstructure, mechanical properties, and performance evaluation.
  • Novel materials and feedstock development for CGS.
  • Multifunctional coatings and tailored properties using CGS.
  • CGS for additive manufacturing: process development, material selection, and part quality.
  • Hybridization of CGS with other coating and additive manufacturing techniques.
  • Computational modeling and simulation of CGS processes.
  • Applications of CGS in aerospace, automotive, energy, biomedical, and other sectors.
  • Environmental considerations and sustainability aspects of CGS.

Dr. Vicente Albaladejo
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. Materials is an international peer-reviewed open access semimonthly 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

  • cold gas spraying
  • coating technology
  • additive manufacturing
  • materials
  • process optimization
  • characterization
  • feedstock development
  • computational modeling
  • applications

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

19 pages, 3700 KiB  
Article
The Identification of Leidenfrost Phenomenon Formation on TiO2-Coated Surfaces and the Modelling of Heat Transfer Processes
by Monika Maziukienė, Nerijus Striūgas, Lina Vorotinskienė, Raminta Skvorčinskienė and Marius Urbonavičius
Materials 2024, 17(15), 3687; https://doi.org/10.3390/ma17153687 - 25 Jul 2024
Viewed by 926
Abstract
Experiments on specimen cooling dynamics and possible film boiling around a body are very important in various industrial applications, such as nucleate boiling, to decrease drag reduction or achieve better surface properties in coating technologies. The objective of this study was to investigate [...] Read more.
Experiments on specimen cooling dynamics and possible film boiling around a body are very important in various industrial applications, such as nucleate boiling, to decrease drag reduction or achieve better surface properties in coating technologies. The objective of this study was to investigate the interaction between the heat transfer processes and cooling dynamics of a sample in different boundary conditions. This article presents new experimental data on specimens coated with Al–TiO2 film and Leidenfrost phenomenon (LP) formation on the film’s surface. Furthermore, this manuscript presents numerical heat and mass transfer parameter results. The comparative analysis of new experiments on Al–TiO2 film specimens and other coatings such as polished aluminium, Al–MgO, Al–MgH2 and Al–TiH2 provides further detail on oxide and hydride materials. In the experimental cooling dynamics experiments, specimens were heated up to 450 °C, while the sub-cooling water temperatures were 14*‒20 °C (room temperature), 40 °C and 60 °C. The specimens’ cooling dynamics were calculated by applying Newton’s cooling law, and heat transfer was estimated by calculating the heat flux q transferred from the specimens’ surface and the Bi parameter. The metadata results from the performed experiments were used to numerically model the cooling dynamics curves for different material specimens. Approximated polynomial equations are proposed for the polished aluminium, Al–TiO2, Al–MgO, Al–MgH2 and Al–TiH2 materials. The provided comparative analysis makes it possible to see the differences between oxides and hydrides and to choose materials for practical application in the industrial sector. The presented results could also be used in software packages to model heat transfer processes. Full article
(This article belongs to the Special Issue Advances in Cold Gas Spraying Technology: Expanding Boundaries in Coating and Additive Manufacturing of Materials)
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19 pages, 11768 KiB  
Article
Geometry and Microstructure Control of Remanufactured Metallic Parts by Cold Spray Additive Manufacturing
by Andrea Garfias, Rodolpho Vaz, Vicente Albaladejo-Fuentes, Javier Sánchez and Irene Garcia Cano
Materials 2023, 16(13), 4735; https://doi.org/10.3390/ma16134735 - 30 Jun 2023
Cited by 9 | Viewed by 1562
Abstract
Cold Spray Additive Manufacturing (CSAM) is a thermal spray technique that is typically used for the repair of metallic components. One of the challenges of CSAM is to improve the geometrical accuracy of the sprayed parts, along with overcoming the inferiority of the [...] Read more.
Cold Spray Additive Manufacturing (CSAM) is a thermal spray technique that is typically used for the repair of metallic components. One of the challenges of CSAM is to improve the geometrical accuracy of the sprayed parts, along with overcoming the inferiority of the mechanical properties of the deposits by tailoring their microstructure with different deposition strategies. For this, Cu, Al, Ti, and Ti6Al4V substrates were reconstructed by two Cold Spray (CS) methods: Traditional (T) and a novel strategy, Metal Knitting (MK). The final geometry, microstructure, and mechanical properties of the reconstructed parts by these two methods were compared. Additionally, we investigated the effects of annealing on the microstructure of sprayed components and its influence on adhesion, resistance to erosion, and abrasive wear. The results indicate that annealing effectively reduces the microstructure defects of the remanufactured parts (up to 30% porosity reduction) and improves the adhesive strength (i.e., below 30 MPa for as-sprayed deposits, and up to 160 MPa for heat-treated Ti4Al4V deposits). Notably, the abrasive and erosive resistance of the Cu and Al annealed deposits sprayed by MK gave very similar results compared to their bulk counterparts, suggesting that it is an efficient method for the reconstruction of damaged parts. Full article
(This article belongs to the Special Issue Advances in Cold Gas Spraying Technology: Expanding Boundaries in Coating and Additive Manufacturing of Materials)
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