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Communication Dans Un Congrès Année : 2021

Investigation of Agglomerated and Porous Ceramic Powders Suitable for Cold Spray

Vincent Guipont
Djamel Missoum-Benziane

Résumé

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 are also discussed.
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Dates et versions

hal-03265700 , version 1 (21-06-2021)

Identifiants

Citer

Geoffrey Celeste, Vincent Guipont, Djamel Missoum-Benziane. Investigation of Agglomerated and Porous Ceramic Powders Suitable for Cold Spray. ITSC2021, May 2021, Virtual, France. pp.139-146, ⟨10.31399/asm.cp.itsc2021p0139⟩. ⟨hal-03265700⟩
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