Microstructuring of steel surfaces via cold spraying with 316L particles for studying the particle-wall collision behavior

Breuninger, Paul; Krull, Fabian; Huttenlochner, Katharina; Müller-Reno, Christine; Ziegler, Christiane; Merz, Rolf; Kopnarski, Michael; Antonyuk, Sergiy

doi:10.1016/j.surfcoat.2019.125054

Cited by 10 publications

(5 citation statements)

References 35 publications

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“…The thickness of the coatings deposited on both substrates increases noticeably with higher gas temperature and gas pressure ( Figure 7 a,b). This phenomenon can be attributed to the fact that higher cold spray parameters (gas temperature and gas pressure) result in increased deceleration of powder particles in the stagnation zone [ 33 ]. The coatings sprayed on both substrates at 900 °C and 5.5 MPa exhibit the highest thickness, measuring 165.85 μm and 175.56 μm, respectively.…”

Section: Resultsmentioning

confidence: 99%

Comparison of Cold-Sprayed Coatings of Copper-Based Composite Deposited on AZ31B Magnesium Alloy and 6061 T6 Aluminum Alloy Substrates

Xue

Shao

et al. 2023

Materials

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Copper-coated graphite and copper mixture powders were deposited on AZ31B magnesium alloy and 6061 T6 aluminum alloy substrates under different process parameters by a solid-state cold spray technique. The microstructure of the copper-coated graphite and copper composite coatings was visually examined using photographs taken with an optical microscope and a scanning electron microscope. The surface roughness of the coatings was investigated with a 3D profilometer. The thickness of the coatings was determined through the analysis of the microstructure images, while the adhesion of the coatings was characterized using the scratch test method. The results indicate that the surface roughness of the coatings sprayed on the two different substrates gradually decreases as gas temperature and gas pressure increase. Additionally, the thickness and adhesion of the coatings deposited on the two different substrates both increase with an increase in gas temperature and gas pressure. Comparing the surface roughness, thickness, and adhesion of the coatings deposited on the two different substrates, the surface roughness and adhesion of the coatings on the soft substrate are greater than those of the coatings on the hard substrate, while the thickness of the coatings is not obviously affected by the hardness of the substrate. Furthermore, it is noteworthy that the surface roughness, thickness, and adhesion of the copper-coated graphite and copper composite coatings sprayed on the two different substrates exhibit a distinct linear relationship with particle velocity.

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Section: Resultsmentioning

confidence: 99%

Comparison of Cold-Sprayed Coatings of Copper-Based Composite Deposited on AZ31B Magnesium Alloy and 6061 T6 Aluminum Alloy Substrates

Xue

Shao

et al. 2023

Materials

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“…It is noted that the droplets that hit the ground at t = 9 s and t = 10 s ( Fig 13 ) stop recirculating within the environment. This occurs because the restitution coefficients are zero, similar to the physical phenomenon in which droplets adhere to solid surfaces [ 75 , 76 ].…”

Section: Resultsmentioning

confidence: 99%

Numerical and experimental analyses for the improvement of surface instant decontamination technology through biocidal agent dispersion: Potential of application during pandemic

et al. 2021

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The transmission of SARS-CoV-2 through contact with contaminated surfaces or objects is an important form of transmissibility. Thus, in this study, we evaluated the performance of a disinfection chamber designed for instantaneous dispersion of the biocidal agent solution, in order to characterize a new device that can be used to protect individuals by reducing the transmissibility of the disease through contaminated surfaces. We proposed the necessary adjustments in the configuration to improve the dispersion on surfaces and the effectiveness of the developed equipment. Computational Fluid Dynamics (CFD) simulations of the present technology with a chamber having six nebulizer nozzles were performed and validated through qualitative and quantitative comparisons, and experimental tests were conducted using the method Water-Sensitive Paper (WSP), with an exposure to the biocidal agent for 10 and 30 s. After evaluation, a new passage procedure for the chamber with six nozzles and a new configuration of the disinfection chamber were proposed. In the chamber with six nozzles, a deficiency was identified in its central region, where the suspended droplet concentration was close to zero. However, with the new passage procedure, there was a significant increase in wettability of the surface. With the proposition of the chamber with 12 nozzles, the suspended droplet concentration in different regions increased, with an average increase of 266%. The experimental results of the new configuration proved that there was an increase in wettability at all times of exposure, and it was more significant for an exposure of 30 s. Additionally, even in different passage procedures, there were no significant differences in the results for an exposure of 10 s, thereby showing the effectiveness of the new configuration or improved spraying and wettability by the biocidal agent, as well as in minimizing the impact caused by human factor in the performance of the disinfection technology.

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“…According to the chosen impact scenarios, the particle had a different number of initial contact points with the substrate: (a) one central contact, (b) four lateral contacts with edges of the microdefect, (c) two contacts with closer microdefect edges and (d) one contact with the edge of the defect. In the second simulation case, the particle size was reduced to 2.1 µm that corresponds to the experimentaly studied particle size in our previous work [23]. This paticle size showed good adherence on the surface and can therefore be set as the minimum size that can attach to the surface.…”

Section: Numerical Model and Simulation Parametersmentioning

confidence: 98%

“…In another work [22], we studied the effect of the coatings with fine TiO 2 particles on the tribological behavior of 16MnCr5 steel chain pins created by the established cold spraying method for fine particles. Additionally, the surface modification by cold sprayed steel particles on steel substrates is described in the previous work [23]. Champagne and Helfrich presented in their critical review of the repair of load-bearing components several successfully completed example cases on this topic [24].…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Particle Interaction with Surface Microdefects during Cold Gas-Dynamic Spraying

et al. 2022

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The cold gas-dynamic spray (CGDS) technique is utilized for repairing processes of a large number of metallic components in mechanical and process engineering, such as bridges or vehicles. Fine particles impacting on the component surface can be severely deformed and penetrate into the defects, filling and coating them, resulting in possible protection against corrosion or crack propagation. This work focuses on the investigation of the impact behavior of cold sprayed particles with the wall surface having microdefects in the form of cavities. The collision of fine single particles with the substrate, both made from AISI 1045 steel, was simulated with the finite element method (FEM) using the Johnson–Cook failure model. The impact phenomena of particles on different microdefect geometries were obtained and compared with the collision on a smooth surface. The particle diameter and defect were varied to investigate the influence of the size on the deformation behaviour. The different impact scenarios result in different temperature and stress distributions in the contact zone, penetration and deformation behavior during the collision.

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Microstructuring of steel surfaces via cold spraying with 316L particles for studying the particle-wall collision behavior

Cited by 10 publications

References 35 publications

Comparison of Cold-Sprayed Coatings of Copper-Based Composite Deposited on AZ31B Magnesium Alloy and 6061 T6 Aluminum Alloy Substrates

Comparison of Cold-Sprayed Coatings of Copper-Based Composite Deposited on AZ31B Magnesium Alloy and 6061 T6 Aluminum Alloy Substrates

Numerical and experimental analyses for the improvement of surface instant decontamination technology through biocidal agent dispersion: Potential of application during pandemic

Simulation of Particle Interaction with Surface Microdefects during Cold Gas-Dynamic Spraying

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