Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

Irissou, Éric; Legoux, Jean-Gabriel; Arsenault, B.; Moreau, Christian

doi:10.1007/s11666-007-9086-8

Cited by 327 publications

(165 citation statements)

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“…In particular, it has been shown that the deposition efficiency of pure aluminum feedstock could be improved with the addition of harder feedstock particles such as alumina. Irissou et al [10] have demonstrated that by adding alumina to pure aluminum powder, a porosity reduction of 1-7% in the coating is obtained. Furthermore, the bonding strength between aluminum-alumina coating and substrate shows an increase of 50% compared to cases where only pure aluminum is used [10].…”

Section: Pure Aluminum and Alumina Feedstock Powdersmentioning

confidence: 99%

“…Irissou et al [10] have demonstrated that by adding alumina to pure aluminum powder, a porosity reduction of 1-7% in the coating is obtained. Furthermore, the bonding strength between aluminum-alumina coating and substrate shows an increase of 50% compared to cases where only pure aluminum is used [10]. Also, the presence of alumina particles in the aluminum-alumina coatings results in similar corrosion behaviour compared to pure aluminum coatings [10].…”

Section: Pure Aluminum and Alumina Feedstock Powdersmentioning

confidence: 99%

“…Furthermore, the bonding strength between aluminum-alumina coating and substrate shows an increase of 50% compared to cases where only pure aluminum is used [10]. Also, the presence of alumina particles in the aluminum-alumina coatings results in similar corrosion behaviour compared to pure aluminum coatings [10]. In addition, aluminum-alumina powder can be sprayed using low pressure cold spray systems and alleviates the risks of nozzle clogging [56].…”

Section: Pure Aluminum and Alumina Feedstock Powdersmentioning

confidence: 99%

“…Using aluminum-alumina powder mixtures increases deposition efficiency and contributes to preventing nozzle clogging. It has been shown that adding alumina particles to the pure aluminum feedstock particles can enhance some of the coating mechanical properties and improve coating quality by reducing porosity level [10]. However, special nozzles such as polymer nozzles are usually used for spraying pure aluminum feedstock powder.…”

Section: Experimental Work Objectivesmentioning

confidence: 99%

“…Pure aluminum, due to its relatively low density and high thermal conductivity, is commonly used in industrial CHE applications. However, the combination of pure aluminum and alumina particles can result in a denser coating compared to the pure aluminum coating [10]. Another complementary benefit of adding alumina particles to the pure aluminum feedstock is the prevention of nozzle clogging when compared to pure aluminum spraying.…”

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confidence: 99%

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Influence of Alumina Addition to Aluminum Fins for Compact Heat Exchangers Produced by Cold Spray Additive Manufacturing

et al. 2015

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Aluminum and aluminum-alumina powder mixtures were used to produce pyramidal fin arrays on aluminum substrates using cold spray as an additive manufacturing process. Using aluminum-alumina mixtures instead of pure aluminum powder could be seen as a costeffective measure, preventing nozzle clogging. The fin geometries that were produced were observed using a 3D digital microscope to determine the flow passages width and fins geometric details. Heat transfer and pressure tests were carried out using different ranges of appropriate Reynolds numbers for the sought commercial application to compare each fin array and determine the effect of alumina content. It was found that the presence of alumina reduces the fins' performance when compared to pure aluminum but that they still outperform traditional fins. Numerical simulations were performed and were used to explain

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Section: Pure Aluminum and Alumina Feedstock Powdersmentioning

confidence: 99%