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Abstract
The present paper describes a study that attempts to develop the use of thermal barrier coatings for industrial foundry applications. A wide range of tool steel specimens coated with plasma-sprayed, thermal barrier ceramics having different compositions were tested in thermal fatigue by repeated immersion in liquid aluminium. Then, residual stress measurements performed by neutron diffraction on specimens coated with the ceramic that exhibited the longest thermal fatigue life showed the evolution of the residual stress profiles in the near-interface layers of the substrate. Synchrotron radiation measurements were attempted in the coating and in the vicinity of the interface.