Parameters of the Gas-Powder Supersonic Jet in Cold Spraying Using a Mask

Sova, A.; Doubenskaia, M.; Grigoriev, Sergey N.; Okunkova, Anna A.; Smurov, I.

doi:10.1007/s11666-013-9891-1

Cited by 30 publications

(10 citation statements)

References 17 publications

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“…The particle impact velocity seems to drastically increase for the light materials (Mg, Al, Ti, and their alloys) and for low process parameters values. Furthermore, for these materials, the particle [27,41,46], (e) Mg and Mg Alloys [66], (f) Ni and Ni Alloys [59][60][61][62][63][64], (g) Ta [21], (h) Ti and Ti Alloys [46][47][48][49][50][51][52][53][54].…”

Section: Resultsmentioning

confidence: 99%

“…Particle velocity vs. process parameter for the different pure metals and alloys analyzed in the present study. (a) Al and Al Alloys[38][39][40][41][42][43][44], (b) Co and Co Alloys[5,49,70], (c) Cu and Cu Alloys[29][30][31][32][33][34][35][36], (d) Fe and Fe Alloys[27,41,46], (e) Mg and Mg Alloys[66], (f) Ni and Ni Alloys[59][60][61][62][63][64], (g) Ta[21], (h) Ti and Ti Alloys[46][47][48][49][50][51][52][53][54].…”

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confidence: 99%

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confidence: 99%

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Powder Properties and Processing Conditions Affecting Cold Spray Deposition

et al. 2020

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The cold spray coating properties and performances are largely affected by feedstock characteristics and the employed processing parameters. Starting from experimental results obtained from the bibliographic data, the relationships between starting particles, processing conditions, and coating properties obtained by cold gas spray were analyzed. The relationships among these properties and particle velocity were described for various material systems. The effect on particle flattening, hardness, and porosity were largely described. Finally, the influence of the different parameters on the process output and on the coating properties was analytically defined through the employment of the multi-objective simulation tool modeFRONTIER. The analysis of data from the bibliography is a new trend that can also be applied to cold spray in order to analyze the effect of powder properties and spraying parameters on the cold spray (CS) process.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

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Powder Properties and Processing Conditions Affecting Cold Spray Deposition

et al. 2020

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“…Additive manufacturing using Cold Spray is a topic which is currently being studied by several groups (Ref [19][20][21][22], and has obtained a growing amount of attention. Masked Cold Gas Dynamic Spray (MCGDS) has been recently developed as a new additive manufacturing technique to build periodically repetitive structures such as pin fin arrays and has been proven to be a viable alternative in compact heat exchanger applications ( Ref 19,23,24).…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Failure Mode Characterization of Pyramidal Fin Arrays Produced by Masked Cold Gas Dynamic Spray

et al. 2015

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This work evaluates the shear strength of pyramidal fin arrays made from various feedstock materials (cylindrical aluminum, spherical nickel, and cylindrical stainless steel 304 powders) deposited on an Al6061-T6 substrate. Higher shear strength was measured for the nickel fin array followed by the stainless steel 304 and the aluminum arrays. Different failure modes were observed by inspecting the fracture surfaces under Scanning Electron Microscope. Deposition between the cold sprayed nickel and stainless fins was detected whereas dimples were noticed on the substrate between the fins when aluminum is used as the feedstock material. A numerical simulation of normal and angled impacts using the high strain rate Preston-Tonks-Wallace model was carried out in order to have a better understanding of the experimental results. The equivalent plastic strain (PEEQ) obtained from the finite element analysis at normal impact correlates with the different shear strengths measured experimentally. Furthermore, even if a higher PEEQ was observed for angled impacts compared to its normal collision counterpart, it is suggested that the particles may not bond because of the rotational restitution momentum caused by the tangential friction generated during angled impacts. This rotational restitution momentum was not detected for particle impacts normal to the substrate surface.

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“…Champagne et al (2010) discussed the outcome of 1-Dnozzle calculation in comparison to 2-D axi-symmetric simulations and found measured velocities in an intermediate range between those theoretical approaches. A more application-related question was asked by Sova et al (2013), who analysed the gas flow of a jet that impinges onto a mask. They tracked non-interacting particles that were released in the nozzle exit in order to find how they move through the mask.…”

Section: Introductionmentioning

confidence: 99%

An analysis of the particulate flow in cold spray nozzles

Meyer

Lupoi

2015

Mech. Sci.

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Abstract. Cold Spray is a novel technology for the application of coatings onto a variety of substrate materials. In this method, melting temperatures are not crossed and the bonding is realized by the acceleration of powder particles through a carrier gas in a converging-diverging nozzle and their high energy impact over a substrate material. The critical aspect of this technology is the acceleration process and the multiphase nature of it. Three different nozzle designs were experimented under constant conditions and their performance simulated using Computational Fluid Dynamics tools. The Deposition Efficiency was measured using titanium as feedstock material and it was shown that it decreases with the cross-sectional throat area of the nozzle. Computational results based on a one-way coupled multiphase approach did not agree with this observation, while more sophisticated modelling techniques with two-way couplings can partially provide high-quality outcomes, in agreement with experimental data.

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Parameters of the Gas-Powder Supersonic Jet in Cold Spraying Using a Mask

Cited by 30 publications

References 17 publications

Powder Properties and Processing Conditions Affecting Cold Spray Deposition

Powder Properties and Processing Conditions Affecting Cold Spray Deposition

Finite Element Analysis and Failure Mode Characterization of Pyramidal Fin Arrays Produced by Masked Cold Gas Dynamic Spray

An analysis of the particulate flow in cold spray nozzles

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