Thermal spray shape deposition

Weiß, L.; Prinz, Friedrich; Adams, D. A.; Siewiorek, Dan

doi:10.1007/bf02646778

Cited by 37 publications

(4 citation statements)

References 1 publication

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“…A thermal spray method for forming parts was developed in the early 1990s and employed a mask in the shape of each layer to form 3D geometries. 208 This method has not seen widespread adoption since, but may provide useful methods for applying masks to generate parts in other processes. Friction stir welding has been proposed for AM, 209 which operates by the method of sheet lamination.…”

Section: Materials Jetting and Other Methodsmentioning

confidence: 99%

The metallurgy and processing science of metal additive manufacturing

Sames

List

Pannala

et al. 2016

International Materials Reviews

2,022

788

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Additive manufacturing (AM), widely known as 3D printing, is a method of manufacturing that forms parts from powder, wire or sheets in a process that proceeds layer by layer. Many techniques (using many different names) have been developed to accomplish this via melting or solid-state joining. In this review, these techniques for producing metal parts are explored, with a focus on the science of metal AM: processing defects, heat transfer, solidification, solid-state precipitation, mechanical properties and post-processing metallurgy. The various metal AM techniques are compared, with analysis of the strengths and limitations of each. Only a few alloys have been developed for commercial production, but recent efforts are presented as a path for the ongoing development of new materials for AM processes.

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Section: Materials Jetting and Other Methodsmentioning

confidence: 99%

The metallurgy and processing science of metal additive manufacturing

Sames

List

Pannala

et al. 2016

International Materials Reviews

2,022

788

View full text Add to dashboard Cite

show abstract

“…This method uses iterative masking and deposition steps. The idea is to spray each layer, using a disposable stencil mask with the shape of the current layer crosssection [16]. Masks are produced from paper with a CO2 laser.…”

Section: Rapid Manufacturingmentioning

confidence: 99%

“…Figure 5 shows an example of the cavities of injection molds being fabricated by direct deposition of metal onto plastic stereolithography models of the desired part and then backing the framed shell with epoxy resins. In this application, the robotic spray trajectories are derived directly from the same CAD models used to pian the stereolithography process which produced the plastic model pattern [16].…”

Section: Rapid Manufacturingmentioning

confidence: 99%

New technologies and applications in robotics

1994

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“…resulted in a tensile ductility of 40 to 50% Ni3AI and NiA1 coatings can protect the substrate materials against oxidation, corrosion, erosion, and wear in specific environments. Thermal spray deposition techniques are also ideal for net-and near-net-shape forming processes (Ref [9][10][11][12] and can overcome the processing problems associated with low room-temperature ductility and inadequate hightemperature strength for structural applications. 12) investigated thermal spray deposition of nickel aluminide coatings and characterized the microstructures and coating quality based on prealloyed and mechanofused powders.…”

Section: Introductionmentioning

confidence: 99%

Reactive spraying of nickel-aluminide coatings

et al. 1997

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Reactive spraying of nickel aluminides was accomplished via reaction synthesis techniques in which nickel and aluminum powders were fed through a direct-current plasma torch onto carbon steel substrates. The as-sprayed coatings obtained by reactive spraying were characterized by x-ray diffraction and microscopic techniques. Reactive spraying of nickel and aluminum resulted in coatings consisting of Ni, Al, Ni3AI, NiAl3, NisAI3, NiAi, and AI203, depending on the experimental conditions. Nickel aluminide phases observed in plasma spray depositions were compared with the phases obtained by combustion synthesis techniques, and the formation of phases in reactive spraying was attributed to the exothermic reaction between splats of aluminum and nickel. Primary and secondary reactions leading to the formation of nickel aluminides were also examined. The splat thickness and the reaction layer suppressed the formation of desired equilibrium phases such as Ni3AI and NiAI. As-sprayed coatings were annealed to enhance the diffusional reactions between the product phases and aluminum and nickel. Coatings obtained by reactive spraying of elemental powders were compared with as-sprayed and annealed coatings obtained with a bond coat material in which nickel was deposited onto aluminum particles.

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Thermal spray shape deposition

Cited by 37 publications

References 1 publication

The metallurgy and processing science of metal additive manufacturing

The metallurgy and processing science of metal additive manufacturing

New technologies and applications in robotics

Reactive spraying of nickel-aluminide coatings

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