Enhancement of Mechanical Properties and Corrosion Resistance of HVOF-Sprayed NiCrBSi Coatings Through Mechanical Attrition Treatment (SMAT)
| Autor: | J. Creus, Christophe Verdy, K. Aoudia, Delphine Retraint, Frédéric Sanchette, C. Langlade |
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| Přispěvatelé: | Laboratoire des Systèmes Mécaniques et d'Ingénierie Simultanée (LASMIS), Institut Charles Delaunay (ICD), Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Troyes (UTT)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Interdisciplinaire Carnot de Bourgogne (ICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Université de Technologie de Belfort-Montbeliard (UTBM)-Université de Bourgogne (UB)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 (LaSIE), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Sonotrode Materials science [PHYS.MECA]Physics [physics]/Mechanics [physics] 02 engineering and technology engineering.material Condensed Matter Physics 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials Surfaces Coatings and Films Corrosion [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] 020303 mechanical engineering & transports 0203 mechanical engineering Coating Residual stress 0103 physical sciences Ultimate tensile strength Materials Chemistry engineering Surface roughness Composite material Thermal spraying Porosity ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Thermal Spray Technology Journal of Thermal Spray Technology, 2020, 29 (8), pp.2065-2079. ⟨10.1007/s11666-020-01092-9⟩ |
| ISSN: | 1544-1016 1059-9630 |
| Popis: | This study aims at evaluating the effects of surface mechanical attrition treatment (SMAT) on mechanical properties and corrosion resistance of NiCrBSi coatings deposited by high-velocity oxygen-fuel (HVOF) spraying. The as-deposited coating has a typical HVOF-sprayed morphology with unmelted and deformed particles, associated with voids and porosities, whereas after SMAT, the affected zone morphology is more compact, without porosity or crack. The thickness of the affected zone varies from about 30 to 100 µm according to the SMAT parameters. The surface roughness is much lower for SMAT-treated coatings (from Ra = 6.8 µm to a Ra ≈ 2.3 µm). Whatever the SMAT parameters used in this work, the treated materials are harder compared to the as-deposited coating (from 6.6 to 7.6 GPa). They exhibit compressive residual stresses around − 360 MPa, while tensile stresses with an average value of 180 MPa were evaluated for the as-deposited coating. In addition, the treated coatings show better wear resistance as well as better corrosion resistance in a 3 wt.% NaCl solution. The better compromise in terms of SMAT parameters corresponds to amplitude of vibration of the SMAT sonotrode of 15 μm and SMAT duration of 810 s. |
| Databáze: | OpenAIRE |
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