BEHAVIOR TO HIGH SPEEDS HEATING-COOLING OF CERAMIC MULTILAYER MULTIFUNCTIONAL STRUCTURES BASED ON THE 2 1 ZIRCONIE PARTIAL STABILIZED WITH YTTRIA

Abstract

Advanced materials intended for application in aerospace, power, metallurgical industries impose composit e functional materials and new methods and installations to test them. Thermal barrier coatings(TBCs)are widely used to protect components and remain the most effective thermal insulation approach and their development was focused on partial stabilized zirconia. In this paper the used material is zirconia partial stabilized with 20% yttria in place of the classic TBC stabilized with 7-8%. In order to evaluate the behavioral assessment of TB protection, attesting installation was designed and realized by the INCAS, for cooling-heating speeds up to 100 C/s, installation included in the experimental program. In the view of the evidence regarding interfacial structural changes induced by thermal shock due to high thermal gradients the results of SEM-EDS electronic microscopy investigations were presented.