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Aérosolisation de particules de carbure de silicium sur des périodes longues

Abstract : Silicon carbide (SiC) particles used in long-duration industrial applications releases potentially hazardous dust which can also change the bulk material quality. However, most dustiness tests do not study dust released over long durations nor do they measure the effect of dust generation on the bulk powder as they emulate applications lasting for short duration (few seconds to minutes) which has minimal effect on the bulk sample. In this study, we test the number and mass dustiness of two different samples of SiC powders with median particle sizes (x50) of 66 µm and 38 µm, over six hours using a vortex shaker. The dust generation mechanism might include the release of aerosols due to the attrition of particles owing to inter-particle and particle-wall impaction. This study emphasizes the need for long duration dustiness tests for hard materials like SiC and characterization for change in bulk material properties due to dust generation and release. Furthermore, the results can aid in selecting the bulk material for long-term applications based on dustiness.
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https://hal-ineris.archives-ouvertes.fr/ineris-03319908
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Submitted on : Friday, August 13, 2021 - 3:02:16 PM
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Somik Chakravarty, Marc Fischer, Olivier Le Bihan, Martin Morgeneyer. Aérosolisation de particules de carbure de silicium sur des périodes longues. 32. Congrès Français sur les Aérosols (CFA 2019), Jan 2019, Paris, France. ⟨10.25576/ASFERA-CFA2019-16724⟩. ⟨ineris-03319908⟩

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