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Accueil > Séminaires & Soutenances > Séminaires, soutenances de thèses et HDR précédents > 2018 > Séminaires 2018 > Le jeudi 7 juin 2018 à 10h30

Le jeudi 7 juin 2018 à 10h30

Laurent Catoire (ENSTA Paris Tech) - Detailed Chemical Kinetic Models for Nanothermites Combustion

Salle de réunion Jean Lascoux, aile 0, RdC

10h30 : accueil café

11h00 : Séminaire : "Detailed Chemical Kinetic Models for Nanothermites Combustion"
par : Laurent Catoire (Unité de Chimie et Procédés (UCP), ENSTA Paris Tech)

Abstract :

Nanoenergetic materials are of interest due to the applications in civil and defense technologies. Nanocomposite thermites (nanoparticles based energetic materials) display higher reaction rates, energy release rates than micro-scaled composites due to large reactant surface area to volume ratio of nanoparticles or small diffusion distance between nanoparticles. The final phase compositions, morphology, of a reactive nano-scaled composite material may be different from micro-scaled composite material. Chemical kinetics or dynamics would be, or is, expected to play a significant role to understand the combustion of nanothermites and to improve the performances of nanoenergetic materials. Issues concerning reaction mechanisms are also related to the propagation regimes because such materials support deflagration and detonation. Another unresolved question is the way they react depending on the heating rates. All solid state reactions must be activated by external stimuli : laser, shock, isothermal or nonisothermal (low or fast, linear or nonlinear) heating.

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Le jeudi 7 juin 2018 à 10h30