Cold gas spray coatings: basic principles corrosion protection and
                        applications

Silva, Fernando Santos da; Cinca, N.; Dosta, S.; Cano, I.G.; Guilemany, J.M.; Benedetti, Assis Vicente

doi:10.26850/1678-4618eqj.v42.1.2017.p09-32

Cited by 32 publications

(25 citation statements)

References 110 publications

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“…The powder presented a micrometer particle size with submicron particles (Fig. 2a) formed during solidification in the gas atomization process (Ref 25,26). The morphology was rounded, incompletely spherical and without pores (Fig.…”

Section: Structure and Morphology Of The Powders And Coatingsmentioning

confidence: 98%

Effect of the Outer Layer of Al Coatings Deposited by Cold Gas Spray on the Microstructure, Mechanical Properties and Corrosion Resistance of the AA 7075-T6 Aluminum Alloy

et al. 2020

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The corrosion of AA 7075-T6 aluminum alloy is a critical issue for many industries. In this study, aluminum coatings were deposited onto AA 7075-T6 by cold gas spray and the effect of the porous outer layer on different properties of the coating, including corrosion-resistance was investigated. As-prepared and polished samples were used to study the microstructure, morphology, mechanical properties and corrosion resistance of the coating in 3.5 wt.% NaCl solution. Cross-sectional analysis showed a dense structure, low porosity (0.8%) and thickness up to 300 lm (* 100 lm for the porous outer layer and * 200 lm for the compact inner layer). The sliding wear test resulted in a volume loss of 3.2 9 10 -4 mm 3 /Nm with an adhesive wear mechanism. The abrasive wear test showed a wear rate of 1.1 9 10 -4 mm 3 /Nm for the asprepared coating and 0.8 9 10 -4 mm 3 /Nm for the polished coating. The as-prepared coating pores and interparticle spacing in the outer layer were mostly responsible for the increase in wear rate. For the polished coating immersed in 3.5 wt.% NaCl solution during 900 h, the electrolyte reached some specific points of the substrate as revealed by the cross-sectional analysis. Inspection of the as-prepared coating demonstrated that the coating/substrate interface was completely damaged after long immersion times (* 900 h).

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Section: Structure and Morphology Of The Powders And Coatingsmentioning

confidence: 98%

Effect of the Outer Layer of Al Coatings Deposited by Cold Gas Spray on the Microstructure, Mechanical Properties and Corrosion Resistance of the AA 7075-T6 Aluminum Alloy

et al. 2020

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“…The thermal energy is low during the CS process, minimizing the oxidation of the coatings. In contrast with other thermal spray processes, the temperatures of the gas and the particles are much lower in CS, and the gas and particle velocity are much higher [22]. Depending on the sprayed material, a greater density of the coating is acquired when the high particle velocity impacts the surface of the substrate.…”

Section: Introductionmentioning

confidence: 98%

The Dual Character of MAX Phase Nano-Layered Structure Highlighted by Supersonic Particles Deposition

et al. 2021

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MAX phase compounds offer an attractive mixture of ceramic–metallic properties due to their covalent ionic–metallic nature. Since their discovery, a great interest was attributed to their synthesis and potential applications, but the processing of pure compounds as coatings for industrial large-scale application is still considered a challenge. To date, a limited number of papers have evaluated the build-up of MAX phase coating by cold spray (CS), a novel cost-effective and productive spray technology used in both areas of research and industry. Employing CS, the hot gas-propelled material particles have ballistic impingement on a substrate where they undergo plastic deformation. Because of the brittleness, internal delamination, and limited deformability, the deposition of the pure MAX phase is rather challenging. This paper presents the building-up ability of dense MAX-phase coatings by CS with retained structures and compositions, in close relation with the substrate characteristics and phase composition that influences the dual character ceramic–metallic behaviour. Besides recent literature, the originality of this research consists of pioneering deposition of Ti3AlC2 that emphasizes the ceramic–metallic character influenced by the particle speed and the mechanical properties of both substrate and compound.

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“…wear-resistant and regenerating coatings [1][2][3][4]. Coatings with a thickness of a few to several mm make it possible to produce individual products, thus being classified as additive technologies [5]. Cold spraying is the latest generation of this technology and is now widely used in production engineering, as well as in implantology [6].…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation as a Method for Determining the Mechanical Properties of Cold Spray Coatings

Makrenek¹

2021

Komunikácie

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The paper presents the methodology behind the statistical selection of input parameters using the example of spraying two cold-sprayed coatings. The Ti and Cr3C2-25(Ni20Cr)-Gr coatings were tested. Despite the large difference in the structure of these coatings, nanoindentation studies were carried out focusing on the nano hardness H and elastic modulus E. Based on the four input parameters and two output parameters, a 2-level factorial 2(k-p) experimental design was performed. The conducted analysis showed the significant influence of the spray distance on the H and E values in the case of the Ti coating. The input parameters of the spray distance and the type of carrier gas used turned out to be statistically significant in the case of the cermet coating. Taking into account the statistical analysis, the coatings were sprayed with modified values of the input parameters.

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Cold gas spray coatings: basic principles corrosion protection and applications

Cited by 32 publications

References 110 publications

Effect of the Outer Layer of Al Coatings Deposited by Cold Gas Spray on the Microstructure, Mechanical Properties and Corrosion Resistance of the AA 7075-T6 Aluminum Alloy

Effect of the Outer Layer of Al Coatings Deposited by Cold Gas Spray on the Microstructure, Mechanical Properties and Corrosion Resistance of the AA 7075-T6 Aluminum Alloy

The Dual Character of MAX Phase Nano-Layered Structure Highlighted by Supersonic Particles Deposition

Nanoindentation as a Method for Determining the Mechanical Properties of Cold Spray Coatings

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