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7312 |
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Friday, May 06, 2022, Hall D 11:20 AM Metal Coatings II |
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Study of the construction of aluminum alloy powder deposit on steel and aluminum alloy substrate by experimental way and Spray Cam image analysis |
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Amela Kusuran* / UTBM, France D. Mercs / ICB PMDM UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM / LISI Automotive, France Yijun Yao/ ICB-PMDM UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM, France Marie-Pierre Planche/ LISI Automotive , France Geoffrey Darut/ ICB-PMDM UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM, France Ludovic Vitu/ ICB-PMDM UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM, France Sihao Deng/ ICB-PMDM UMR 6303, CNRS, Université de Bourgogne Franche-Comté, UTBM, France |
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In this study, Cold Spray was employed to deposit aluminum alloy powder on a steel or aluminum alloy substrate. The observation system SprayCam (@Controlvision, USA) was implemented during the process in order to get information on line on the built up of the deposit. The effect of gas temperature, pressure, nature and substrate properties on the microstructural characteristics and mechanical properties of the as sprayed coatings was examined. In relation with the operating conditions, the SprayCam images were analyzed in order to demonstrate : 1) how the distance between the substrate and the nozzle affects the creation of the shock wave ; 2) how the deposition or bouncing of particles is impacted by the operating parameters ; 3) how the size and morphology of the as sprayed particles are correlated to the coating formation. The results show that: 1) the interface between the substrate and the deposit was unchanged after projection ; 2) the porosity was included between 0 and 1% ; 3) the roughness was lower than 10 µm ; 4) the values of traction adhesion on a rough surface were higher than 40 MPa for the two coated substrates. Finally, it was found that the experimental results are in good agreement with the spray cam images analysis. |