A new approach to prepare fully dense Cu with high conductivities and anti-corrosion performance by cold spray

Li, Yujuan; Luo, Xiao-Tao; Rashid, Haroon; Li, Chang‐Jiu

doi:10.1016/j.jallcom.2017.11.053

Cited by 40 publications

(15 citation statements)

References 32 publications

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“…1a1, these irregular pores are mostly located at the trip junctions of the particles. The similar pore characters in the Cu coating were also reported by Li et al [25]. The crevices between the deposited particles made the coating less cohesive.…”

Section: Testing Methodssupporting

confidence: 85%

“…The electrolytic copper powder was produced by the electrolysis method, and its shape was dendritic. The dendritic structure was consistent with the literature [25]. The spherical nickel powder was produced by gas atomizing, and its surface was rough.…”

Section: Powders and Substrates Preparationsupporting

confidence: 85%

“…But in this method, a high pressure of carrier gas should be taken to ensure the injection of the steel balls. A cold-sprayed fully dense Cu coating was deposited by using a mixed feedstock composed of a hard/dense Cu powder and a soft/porous Cu powder [25]. Based on the compaction effect of the ultrasonic shot peening (USSP), it is potentially used to post-process the coating to reduce the porosity of the coating.…”

Section: Introductionmentioning

confidence: 99%

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Structure and corrosion behavior of cold-sprayed Cu/Ni composite coating post-treated by ultrasonic shot peening

Zhang

et al. 2020

SN Appl. Sci.

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In order to provide an effective anticorrosive Cu-based coating for magnesium alloy, cold spray and ultrasonic shot peening (USSP) were used. A series of Cu/Ni composite coatings with different content of Ni were deposited on the surface of the Mg alloy. The obtained coatings were strengthened by USSP. The results revealed that the structural compactness and protecting effect of the cold-sprayed pure Cu coating was enhanced by USSP. The micro-hardness values of the Cu/ Ni composite coatings were increased with the Ni content. The 16 vol.% Ni powders improved the corrosion resistance of the cold-sprayed pure Cu coating. Thus, the cold-sprayed Cu/Ni composite coating with excellent mechanical properties and corrosion resistance can be applied to magnesium alloy surface.

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Section: Testing Methodssupporting

confidence: 85%

Section: Powders and Substrates Preparationsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Structure and corrosion behavior of cold-sprayed Cu/Ni composite coating post-treated by ultrasonic shot peening

Zhang

et al. 2020

SN Appl. Sci.

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“…(a) Compared with thermal spraying, cold spraying can obtain higher coating density. (b) The strong plastic deformation of the particles of the cold spray coating can increase the dislocation density [32][33][34], resulting in the dislocation of strengthening effect. (c) The deposition of particles during cold spraying causes a high residual compressive stress inside the coating [35,36].…”

Section: Wear Performancementioning

confidence: 99%

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Zhao

Dong

et al. 2021

Coatings

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Herein, a NiCrAl coating was prepared on the AZ91D magnesium alloy by cold spraying technology. The microstructure, wear resistance, and corrosion resistance of the cold sprayed NiCrAl coating were studied and compared with two NiCrAl coatings prepared by plasma spraying. The results showed that the porosity of the two-plasma sprayed NiCrAl coatings was 3.21% and 2.66%, respectively, while that of the cold sprayed NiCrAl coating was only 0.68%. The hardness of the cold sprayed NiCrAl coating (650 HV0.1) was higher than those of the two-plasma sprayed NiCrAl coatings (300 HV0.1, 400 HV0.1). In the abrasion resistance test, the cold sprayed NiCrAl coating showed a lower friction coefficient (0.346), less wear volume (3.026 mm3), and superior wear resistance accordingly compared with the two-plasma sprayed NiCrAl coatings. Moreover, the scanning electron microscopy (SEM) morphology at the bottom of the wear trace of the cold sprayed NiCrAl coating showed a compact mechanically mixed layers (MML) structure, and its wear mechanism was mainly abrasive wear, with some fatigue wear. In the electrochemical test, the corrosion current density of the cold sprayed NiCrAl coating (4.404 × 10−2 A·cm−2) was much lower than those of two plasma sprayed coatings (25.96 A·cm−2, 26.98 A·cm−2), indicating that the cold sprayed NiCrAl coating had superior corrosion resistance. Therefore, preparing a cold sprayed NiCrAl coating is a feasible method to comprehensively improve the wear resistance and corrosion resistance of the AZ91D magnesium alloy.

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“…8) In particular, many studies on Cu deposition have been reported because the cold spray method can easily form a Cu coating on various substrates in air. Li et al 9) reported that a fully dense Cu coating was obtained by using a mixed feedstock of dense and porous Cu particles. Kang et al 10) reported that a high-strength deposition layer was realized by using microalloyed Cu particles containing small amounts of Fe, Si, and Ag.…”

Section: Introductionmentioning

confidence: 99%

Characteristics and Microstructural Development of Cold-Sprayed Copper Coating on Aluminum

et al. 2019

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The cold spray method is a coating process that should improve the wettability of solder to aluminum surfaces. In this study, Cu powder particles were deposited on commercially pure Al via cold spraying, and the characteristics and microstructural developments of the deposited layer, interface, and substrate were investigated. Cu coatings, with an electronic resistivity similar to that of commercial solder, could be formed on the Al substrate. Solid-state bonding was partially achieved between the Cu particles. Interdiffusion occurred at the interface between the cold sprayed Cu particles and the Al substrate, forming the reaction phases, and the Cu coating was bonded to Al substrate along almost the entire bond interface. The impact of high-velocity particles induced dynamic recrystallization and grain refinement of Al, resulting in increased hardness near the surface of the Al substrate. The thickness of the hardened region was ³10 µm. Tin-based solder paste exhibited good wettability to the cold-sprayed Cu coating.

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A new approach to prepare fully dense Cu with high conductivities and anti-corrosion performance by cold spray

Cited by 40 publications

References 32 publications

Structure and corrosion behavior of cold-sprayed Cu/Ni composite coating post-treated by ultrasonic shot peening

Structure and corrosion behavior of cold-sprayed Cu/Ni composite coating post-treated by ultrasonic shot peening

Microstructure and Properties of Cold Sprayed NiCrAl Coating on AZ91D Magnesium Alloy

Characteristics and Microstructural Development of Cold-Sprayed Copper Coating on Aluminum

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