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Latokartano, Jyrki
Tampere University
in Cooperation with on an Cooperation-Score of 37%
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document
Properties and Performance of Cold-Sprayed and Laser-Assisted Cold-Sprayed Aluminum Coatings
Abstract
Cold spraying enables the production of dense and high-quality metallic coatings for several application areas including corrosion protection and<br/>repair. Additionally, coating performance and deposition efficiency can be improved by using laser-assisted cold spraying. This process has<br/>shown its potential to enhance coating properties compared with traditional cold spraying of aluminum. The present study focuses on a<br/>comparison of coating properties between cold-sprayed and laser-assisted cold-sprayed aluminum coatings. A co-axial laser spray (COLA)<br/>process was used to improve coating properties by heating a sprayed surface and particle flow with a laser during the spray process. The<br/>purpose in this is to heat the surface without melting, increase thermal softening, and assist the better bonding between particles and substrate.<br/>This, in turn, leads to the formation of dense and tight coating structures. Effect of cold spray processing on microstructure, mechanical<br/>properties, toughness and residual stresses will be evaluated.