On Parameter Selection in Cold Spraying

For cold spraying, a method for the construction of the window of deposition and the selection of optimum process parameters is presented. Initially, particle impact velocity and the critical particle velocity for bonding are worked out and expressed explicitly in terms of key process and material p...

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Bibliographic Details
Published in:Journal of thermal spray technology 2011-12, Vol.20 (6), p.1161-1176
Main Authors: Assadi, H., Schmidt, T., Richter, H., Kliemann, J.-O., Binder, K., Gärtner, F., Klassen, T., Kreye, H.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coating
Cold spraying
Contours
Corrosion and Coatings
Deposition
Exact sciences and technology
Gas temperature
Machines
Manufacturing
Materials Science
Materials selection
Metals. Metallurgy
Peer Reviewed
Process parameters
Processes
Production techniques
Surface treatment
Surfaces and Interfaces
Thin Films
Tribology
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Summary:For cold spraying, a method for the construction of the window of deposition and the selection of optimum process parameters is presented. Initially, particle impact velocity and the critical particle velocity for bonding are worked out and expressed explicitly in terms of key process and material parameters. Subsequently, the influence of particle velocity on coating characteristics is examined in view of the results of experiments and simulations. It has been found that main coating characteristics can be described as a unique function of the ratio of particle velocity to critical velocity, here referred to as η. Finally, coating properties are linked directly to primary process parameters via parameter selection maps, where contours of constant η are plotted on a plane of gas temperature versus gas pressure. Inferences of the presented method and the resulting parameter selection maps are discussed for the example of copper as feedstock material.
ISSN:1059-9630
1544-1016
DOI:10.1007/s11666-011-9662-9