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Investigation of agglomerated ceramic powders suitable for cold spray

Abstract : Cold gas spraying is a solid-state deposition process developed for metallic powders as feedstock materials. For ceramic materials, such low temperature-high velocity kinetic process is still questionable but could have interesting advantages. In the CERASOL project (ANR-19-CE08-0009), the nature and the architecture of porous ceramic powders involving agglomerated sub-micrometric grains are investigated. To that purpose, three oxide ceramics powders (alumina, zirconia and yttria) have been prepared for cold spray. These powders were analyzed in order to assess their architecture (composition, particle size, porosity, density, crystallite sizes…). Preliminary cold spray experiments were carried out implementing velocities measurements for various stand-off distances and spraying of coupons with line experiments. The characteristics of the deposited layers have been examined by SEM and XRD in order to discuss the role of the powder architecture on the impact behavior of the nanostructured agglomerated particles. The role of the gas stream that affects the kinetic and the trajectory of the particles is also discussed.
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Contributor : Geoffrey Céleste Connect in order to contact the contributor
Submitted on : Thursday, April 15, 2021 - 12:24:38 PM
Last modification on : Thursday, July 21, 2022 - 3:53:46 AM
Long-term archiving on: : Friday, July 16, 2021 - 6:35:51 PM


ITSC Manuscript_CELESTE.pdf
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  • HAL Id : hal-03199051, version 1


Geoffrey Celeste, Vincent Guipont, Djamel Missoum-Benziane. Investigation of agglomerated ceramic powders suitable for cold spray. International Thermal Spray Conference (ITSC), May 2021, Virtual, France. ⟨hal-03199051⟩



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