RETRACTED ARTICLE: Structure and Mechanical Properties of Thick Copper Coating Made by Cold Spray

Maev, Roman Gr.; Leshchynsky, Volf; Dzhurinskiy, D.; Kocimski, J.; Maeva, E.

doi:10.1007/s11666-015-0313-4

Cited by 7 publications

(2 citation statements)

References 18 publications

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“…For instance, adhesion strengths of up to 120 MPa have been reported for thick copper coatings sprayed on steel substrates [141]. In a similar case, using extreme spraying conditions and He as process gas, this has been reported to be as high as 200…”

Section: Mechanical Propertiesmentioning

confidence: 94%

Cold spraying – A materials perspective

et al. 2016

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Cold spraying is a solid-state powder deposition process with several unique characteristics, allowing production of coatings or bulk components from a wide range of materials. The process has attracted much attention from academia and industry over the past two decades.The technical interest in cold spraying is twofold: first as a coating process for applications in surface technology, and second as a solid-state additive manufacturing process, offering an alternative to selective laser melting or electron beam melting methods. Moreover, cold spraying can be used to study materials behaviour under extremely high strain rates, high pressures and high cooling rates. The cold spraying process is thus considered to be relevant for various industrial applications, as well as for fundamental studies in materials science.This article aims to provide an overview of the cold spray process, the current understanding of the deposition mechanisms, and the related models and experiments, from a materials science perspective. IntroductionCold spraying (CS) is a solid-state material deposition technique, where micron-sized particles of a powder bond to a substrate as a result of high-velocity impact and the associated severe plastic deformation. Acceleration of particles to high velocities is obtained via expansion of a pressurised and (ironically) 'hot' gas through a diverging-converging nozzle.Despite heating the process gas -which is to provide higher acceleration of the gas and also to facilitate particle deformation through thermal softening -the feedstock remains in the solid state throughout the entire process; hence the name 'cold' spraying. This is to underline the contrast to conventional thermal spraying where particles are completely or partially molten upon impact onto the substrate. Alternative terminology includes cold gas spray, micro cold spray, cold gas dynamic spray, kinetic spray, supersonic particle deposition and metal powder application (MPA), all of which refer to the same principle of solid-state powder deposition as described above. CS is used for coating and repair. It is also used for additive manufacturing (AM) at relatively high deposition rates as compared to the methods based on selective laser or electron beam melting. The main advantage of CS is that it alleviates the problems associated with high temperature processing of materials, such as oxidation and unfavourable structural changes. It is possibly the only continuous method to produce bulk components of metastable materials that are available only in the powder form, e.g. as obtained from mechanical attrition or gas atomisation. The aim of the present paper is to provide an overview of CS from a materials perspective, particularly for a broader audience in materials research, e.g. with interest in dynamic phenomena, plasticity and phase transformations. In terms of application and properties, CS is perhaps best to be compared to thermal spraying processes, as in [24,25]. In view of relevant physical phenomena, however, CS is mos...

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Section: Mechanical Propertiesmentioning

confidence: 94%

Cold spraying – A materials perspective

et al. 2016

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“…Multi-traverse cold spray (CS) deposition provides a means for the additive manufacturing of thick coatings and bulk materials and may also be used to repair parts [1][2][3] . An important concern in the thick coating/bulk material fabrication by CS is the extent to which powder particles in the deposited material are bonded metallurgically.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Locations of Poor Splat Bonding in Multi-Traverse Cold Spray Deposition

Hamada

Otobe

et al. 2016

J. Jpn. Soc. Powder Powder Metallurgy

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In cold spray deposition, powder particles accelerated to several hundred meters a second impact the substrate and deform into splats that are stacked up to form dense coatings on the substrate. These deposited splats, however, are usually not fully bonded to each other, making deposited materials less ductile than wrought materials. An ultrasonic washing test, applied to Cu coatings sprayed on Al substrates, revealed poor splat bonding along spray boundaries and spray layer boundaries. Thickness measurements of coatings deposited with a single linear spray traverse yielded profiles that are approximately Gaussian curves but with reduced edges. We attribute the reduced edges of the thickness profiles to lower particle impact velocities and temperatures in the outer regions of the spray cone. A simulation model was developed that can predict locations of poor-bonded regions in coatings produced by multi-traverse cold-spray deposition from experimentally determined thickness profiles of single-traverse coatings.

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Evaluation of the Ferromagnetic Cold-Sprayed Coating Peeling Process at the Interface Based on Magnetic Barkhausen Noise Testing

Qian

Huang

et al. 2021

J. of Materi Eng and Perform

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RETRACTED ARTICLE: Structure and Mechanical Properties of Thick Copper Coating Made by Cold Spray

Cited by 7 publications

References 18 publications

Cold spraying – A materials perspective

Cold spraying – A materials perspective

Prediction of Locations of Poor Splat Bonding in Multi-Traverse Cold Spray Deposition

Evaluation of the Ferromagnetic Cold-Sprayed Coating Peeling Process at the Interface Based on Magnetic Barkhausen Noise Testing

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