Les turbines à gaz, que ce soit les machines des réacteurs d'avion ou celles développées pour la production électrique sont soumises à de nombreux challenges, notamment des contraintes thermiques fortes. Turbine à gaz GE En effet, le rendement d'un cycle gaz augmente lorsque la température maximale du cycle augmente : la quantité d'énergie dans les gaz de combustion au point d'entrée de la turbine est ainsi d'autant plus élevée et la chute d'enthalpie lors de la détente accrue. Ainsi les machines exploitées pour la production électrique mettent en jeu des niveaux très élevés de température flirtant avec les 1450 °C : c'est exactement la fenêtre de températures correspondant à la fusion de d
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