Coating deposition by the kinetic spray process

Chen, Yujin; Gillispie, Bryan A.; Smith, J. R.

doi:10.1016/j.surfcoat.2005.04.033

Cited by 63 publications

(31 citation statements)

References 12 publications

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“…It can be seen that none of the pure aluminum coatings have roughen the substrate surface during deposition while for the two Al-Al 2 O 3 coatings significant roughening of the substrate surface was observed indicating that a significant erosion of the surface was caused by the hard particles. This concomitant erosion has been reported to activate the adhesion mechanisms at lower gun pressure or particle velocities [7,14]. …”

Section: Coating Microstructuresmentioning

confidence: 86%

Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

et al. 2007

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Section: Coating Microstructuresmentioning

confidence: 86%

Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

et al. 2007

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“…A detailed description of the highpressure cold spray process and the facility was reported previously (Ref [5][6][7][8][9]. The aluminum-silicon alloy powder was prepared using a gas atomization process.…”

Section: Methodsmentioning

confidence: 99%

“…Particle temperature can also have strong effects on coating formation because most metallic materials being sprayed are softened at elevated temperature. Generally, a number of operating variables affect coating deposition by the high-pressure cold spray process to varying degrees through their influence on the velocity and temperature of sprayed particles (Ref 8,9). Better understanding of the link between the process variables and coating formation is imperative to enhance the capability of the highpressure cold spray as a coating process.…”

Section: Introductionmentioning

confidence: 99%

An Investigation on Powder Injection in the High-Pressure Cold Spray Process

Han¹,

Gillispie

Chen

2009

J Therm Spray Tech

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High-pressure cold spray process is a relatively new coating process that uses high-velocity powder particles to form coatings. One of the requirements for this process is to inject the particles to be sprayed into a prenozzle chamber where both the particles and the powder feed gas are entrained into the primary gas stream. In this study, we investigated the effects of powder injection on coating formation through both experimental studies and computational simulations. Several issues related to powder injection will be examined, including the size of powder injector, the differential pressure, powder gas flow, and injector clogging. It is shown that an improved powder injector design not only enables the use of reduced amount of powder carrier gas flow but also maintains steady, clogging-free spraying conditions. Combining with properly selected injection conditions, it can also lead to enhanced coating deposition by kinetic spray process.

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“…The fabrication of these so-called cermet powders can be achieved by three processes, namely solid state, liquid state, and vapor deposition. In that, a combination of metal with hard grains, in which the metal acts as a matrix allowing hard grains to be embedded within and facilitating the development of high density or functional coatings [49][50][51][52][53][54][55].…”

Section: Cold Spray Of Cermet Materialsmentioning

confidence: 99%

“…Inclusion of Ni powders into a Co base refractory alloy resulted in reduced nanohardness and enhanced density of the coating. Numerous types of Zn-predicated coatings comprising of Znz(Al-Si) and ZnzAlzSi (tri-powder) were deposited by low pressure cold spay [53]. Cold gas dynamic spraying at low pressure (1 MPa gage or 150 psig) was acclimated to fabricate Al2O3-Al cermet composite onto 6061 Al alloy.…”

Section: Cold Spray Of Cermet Materialsmentioning

confidence: 99%

Development of Sustainable Cold Spray Coatings and 3D Additive Manufacturing Components for Repair/Manufacturing Applications: A Critical Review

2017

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This review article presents the findings of a comprehensive state-of-the-art literature review of the scientific and technological progress of the cold spray process in the field of repair/remanufacturing using the concept of additive manufacturing. A thorough study was conducted on the potential of this technology to form (a) both thin and thick coatings; (b) the ability to fabricate 3D freeform components in a single process, while benefiting from reduced residual stress level compared to conventional thermal spray coatings processes such as high velocity oxy-fuel (HVOF) or plasma spraying. A systematic overview of the process technology, particularly focusing on the suitability of ceramic-metallic (cermet) composite particles used as feedstock in the deposition was conducted; further elaboration was made pertinent to particle impact and bonding mechanisms during the deposition.

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Coating deposition by the kinetic spray process

Cited by 63 publications

References 12 publications

Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

Investigation of Al-Al2O3 Cold Spray Coating Formation and Properties

An Investigation on Powder Injection in the High-Pressure Cold Spray Process

Development of Sustainable Cold Spray Coatings and 3D Additive Manufacturing Components for Repair/Manufacturing Applications: A Critical Review

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