Ultra-rapid debinding and sintering of additively manufactured ceramics by ultrafast high-temperature sintering - CEA - Commissariat à l’énergie atomique et aux énergies alternatives
Article Dans Une Revue Journal of the European Ceramic Society Année : 2023

Ultra-rapid debinding and sintering of additively manufactured ceramics by ultrafast high-temperature sintering

Résumé

In recent years, additive manufacturing (AM) of ceramics has significantly advanced in terms of the range of equipment available, printing resolution and productivity. Most techniques involve the use of ceramic powders embedded in an organic binder which is typically removed through a slow thermal debinding process. Herein, we prove for the first time that ultra-rapid debinding and sintering are possible for complex 3YSZ components produced using material extrusion technology. The printed components were first chemically debinded in acetone thus removing about one-half of the binder, and then thermally debinded and sintered by ultrafast high-temperature sintering (UHS) in a single-step process (30 to 120s). Fully dense components were obtained with tailored microstructure and nanometric grain size. The sintered artefacts were crack-free even at the microscopic level. This approach paves the way for rapid processing (debinding and sintering) of additively manufactured ceramics with reduced energy consumption and carbon footprint.
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Dates et versions

hal-04200350 , version 1 (08-09-2023)

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Subhadip Bhandari, Charles Maniere, Francesco Sedona, Emanuele de Bona, Vincenzo Sglavo, et al.. Ultra-rapid debinding and sintering of additively manufactured ceramics by ultrafast high-temperature sintering. Journal of the European Ceramic Society, inPress, ⟨10.1016/j.jeurceramsoc.2023.08.040⟩. ⟨hal-04200350⟩
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