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| Abstract No.: |
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Scheduled at:
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Thursday, May 05, 2022, Hall D 4:00 PM
Cold Gas Spraying II
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| Title: |
Sublayer-assisted cold spray metallization of carbon fiber reinforced composites
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| Authors: |
Teng Zhang* / UTBM, France
Jean-Claude Sagot / Pôle ERCOS, ELLIADD (EA. 4661) – University of Bourgogne Franche Comté, University of Technology of Belfort-Montbéliard, France
Essolé Padayodi/ Pôle ERCOS, ELLIADD (EA. 4661) – University of Bourgogne Franche Comté, University of Technology of Belfort-Montbéliard, France
Rija Nirina Raoelison/ ICB, UMR 6303 CNRS, University of Bourgogne Franche Comté, University of Technology of Belfort-Montbéliard, France
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| Abstract: |
In order to investigate the potentials to improve the deposition efficiency for thermosetting substrates, six configurations of microparticles Sn, Zn, Al, Sn + Al2O3, Al + Al2O3, Cu + Al2O3 were cold sprayed on the functionalized substrate of Carbon Fiber Reinforced Epoxy (CFRP) composites equipped with Cu-based sublayer (system C2 or C3) or Al-based sublayer (system A7 or A8). The process conditions were kept unchanged. Microanalysis of sublayers and coatings was then performed via a scanning electronic microscope (SEM), and the deposition mechanisms of different powders coupling on CFRP substrates were discussed. The results indicated that although the deposition efficiencies were negative, the systems of Zn, Al and Al + Al2O3 perform better among all the configurations. It was found that the addition of alumina led to a lower deposition efficiency (DE), compared to the corresponding pure coating. For single-component Sn, Zn or Al powders, they all showed an increasing trend of DE when changing the substrate from Cu-based systems to Al-based systems. The aim of this present work is to elaborate the intrinsic causes of erosion issues and to provide a reference value for picking spraying materials and preparing functionalized CFRP substrates. According to the SEM analysis, the insufficient deformation and escape behaviors of spherical copper powders explained for the difficulty of coating formation. It was noticeable that the surfaces of Al-based systems were more uniform than those of Cu-based ones, due to their desirable deformation abilities. Besides, the significant flatten particles, amorphous debris and melting phenomenon were observed in Al-involved systems, which would definitely contribute to the adhesive bonding between coating and substrate.
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