Electroplating Powder for Cold Spray Applications

Bracker, G. P.; Hodges, Elizabeth; Scott, Marion L.; Berdos, R.; Rigali, Jeffrey; Champagne, Victor K.; Hyers, R. W.

doi:10.1007/978-3-030-36296-6_71

Cited by 3 publications

(2 citation statements)

References 1 publication

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“…In another approach, loosely agglomerated and porous particles has been shown to accelerate more and deform more easily upon impact (pseudo-deformation), producing denser and thicker cold spray deposits (Ref 22,23). Cladding the surface of hard powder particles with softer and more ductile materials has been shown to also improve powder cold sprayability and deposit properties, which is consistent with the cold spray bonding theory based on localized deformation at the surface of the impacting particles (Ref 24,25)…”

Section: Powder Ability To Depositsupporting

confidence: 79%

How to Unleash the Remarkable Potential of Cold Spray: A Perspective

Irissou

Poirier

et al. 2022

J Therm Spray Tech

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Cold spray is a solid-state, powder-based consolidation technique for deposition of coatings, component repair and near-net-shape additive manufacturing. Its unique attributes have propelled the development and commercialization, yet cold spray has only experienced limited deployment. In fact, cold spray technology could be extended to a considerably broader range of applications and achieve a much higher level of industry adoption by focusing on innovative ways to unlock current roadblocks that prevent it from reaching its full potential. Cold spray R&D efforts have doubled during the last decade and along with new industry applications and novel demands provide both a strong body of knowledge and market pull to identify and address these roadblocks. This paper offers the authors’ perspective on what are the next steps to be taken in cold spray R&D to unleash its remarkable potential.

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Section: Powder Ability To Depositsupporting

confidence: 79%

How to Unleash the Remarkable Potential of Cold Spray: A Perspective

Irissou

Poirier

et al. 2022

J Therm Spray Tech

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“…Rapidly solidified, gas-atomized alloyed aluminum (and other matrix materials) powders can be preprocessed before consumption during the CSAM materials consolidation process. Preprocessing methods include milling [23], vacuum degassing [9], thermally assisted degassing [24], thermal heat treating [25], plasma spheroidized [26], granulation [27], spray drying [28], plating [29], and more [30]. Degassing, milling, and thermal heat-treating capture most preprocessing methods that have been researched and developed in the CSAM literature.…”

Section: Introductionmentioning

confidence: 99%

Thermal Preprocessing of Rapidly Solidified Al 6061 Feedstock for Tunable Cold Spray Additive Manufacturing

Haddad

Sousa

Tsaknopoulos

et al. 2022

Metals

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In this work, the influence of thermal pre-processing upon the microstructure and hardness of Al 6061 feedstock powder is considered through the lens of cold spray processing and additive manufacturing. Since solid-state cold spray processes refine and retain microstructural constituents following impact-driven and high-strain rate severe plastic deformation and bonding, thermal pre-processing enables application-driven tuning of the resultant consolidation achieved via microstructural and, therefore, mechanical manipulation of the feedstock prior to use. Microstructural analysis was achieved via X-ray diffraction, scanning electron microscopy, transmission electron microscopy, electron backscatter diffraction, energy dispersive spectroscopy, and differential thermal calorimetry. On the other hand, nanoindentation testing and analysis were relied upon to quantify pre-processing effects and microstructural evolution influences on the resultant hardness as a function of time at 540 °C. In the case of the as-atomized powder, β-Mg2Si-, Al-Fe-, and Mg-Si-type phases were observed along polycrystalline grain boundaries. Furthermore, after a 60 min hold time at 540 °C, Al-Fe-Si-Cr-Mn- and Mg-Si-type intermetallic phases were also observed along grain boundaries. Furthermore, the as-atomized hardness at 250 nm of indentation depth was 1.26 GPa and continuously decreased as a function of hold time until reaching 0.88 GPa after 240 min at 540 °C. Finally, contextualization of the observations with tuning cold spray additive manufacturing part performance via powder pre-processing is presented for through-process and application-minded design.

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Understanding the Antipathogenic Performance of Nanostructured and Conventional Copper Cold Spray Material Consolidations and Coated Surfaces

et al. 2020

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The role of high strain rate and severe plastic deformation, microstructure, electrochemical behavior, surface chemistry and surface roughness were characterized for two copper cold spray material consolidations, which were produced from conventionally gas-atomized copper powder as well as spray-dried copper feedstock, during the course of this work. The motivation underpinning this work centers upon the development of a more robust understanding of the microstructural features and properties of the conventional copper and nanostructured copper coatings as they relate to antipathogenic contact killing and inactivation applications. Prior work has demonstrated greater antipathogenic efficacy with respect to the nanostructured coating versus the conventional coating. Thus, microstructural analysis was performed in order to establish differences between the two coatings that their respective pathogen kill rates could be attributed to. Results from advanced laser-induced projectile impact testing, X-ray diffraction, scanning electron microscopy, electron backscatter diffraction, scanning transmission microscopy, nanoindentation, energy-dispersive X-ray spectroscopy, nanoindentation, confocal microscopy, atomic force microscopy, linear polarization, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy and copper ion release assaying were performed during the course of this research.

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Electroplating Powder for Cold Spray Applications

Cited by 3 publications

References 1 publication

How to Unleash the Remarkable Potential of Cold Spray: A Perspective

How to Unleash the Remarkable Potential of Cold Spray: A Perspective

Thermal Preprocessing of Rapidly Solidified Al 6061 Feedstock for Tunable Cold Spray Additive Manufacturing

Understanding the Antipathogenic Performance of Nanostructured and Conventional Copper Cold Spray Material Consolidations and Coated Surfaces

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