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| Abstract No.: |
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Scheduled at:
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Wednesday, May 05, 2010, Hullet Room 9:00 AM
Cold Spraying 5
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| Title: |
Effect of the ceramic component on cold sprayed metal ceramic coatings
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| Authors: |
Igor Smurov* / Ecole Nationale d'ingénieurs de Saint-Etienne (ENISE), France
Aleksey Sova / Ecole Nationale d'Ingénieurs de Saint-Etienne (ENISE), DIPI Laboratory, France
Vladimir Kosarev/ Institute of Theoretical and Applied Mechanics SB RAS, Russia
Anatolii Papyrin/ Cold Spray Technology, LLC, USA
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| Abstract: |
Spraying metal-ceramic coatings is a complicated task because of the necessity to take simultaneously into account spraying parameters for materials with strongly different characteristics as metal and ceramics. The effect of the nature of ceramic powder, particle size and velocity on the properties of the resulting metal-ceramic coatings is analyzed. Copper and aluminum powders are employed as metal component. Experiments are done with two fractions, fine and coarse, of aluminum oxide and silicon carbide. Velocity of ceramic particles is varied by means of injecting particles into the gas flow at different points, namely, in the subsonic (pre-chamber) and supersonic zones situated at the inlet and outlet parts of the ejector nozzle, respectively. Particle velocity is calculated by the track method using a CCD camera-based optical device with external illumination of the particle flux. Influence of the ceramic component in terms of its spraying parameters, concentration, and size distribution on the process of coating formation and the coating properties is discussed.
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