Ageing evaluation of thermal barrier coatings by thermal diffusivity

pubblicazioni - Articolo

Ageing evaluation of thermal barrier coatings by thermal diffusivity

pubblicazioni - Articolo

Ageing evaluation of thermal barrier coatings by thermal diffusivity

Recently updated on Maggio 11th, 2021 at 08:59 am

THERMAL DIFFUSIVITY P.G. Bison1, F. Cernuschi2, E. Grinzato1, S. Marinetti1, D. Robba2 1 CNR-ITC, C.so Stati Uniti 4, 35127 Padova, Italy – paolo.bison@itc.cnr.it 2 CESI, via Rubattino 54, 20134 Milano, Italy – cernuschi@cesi.it Ceramic thermal barrier coatings (TBC) are widely applied for protecting from combustion gases hot path components of gas turbines for both aero- and land- based applications. In order to prevent the detachment of TBC, it would be essential to monitor their degradation in terms of sintering kinetic. As sintering strongly affects also the thermal diffusivity of TBC, the idea is to measure the latter parameter to account for the former. The technique to measure thermal diffusivity using pulsed thermography is described, together with the model that leads to the identification of TBC diffusivity. Tests and results on specimens artificially aged are reported. Pubblicazione sulla rivista Infrared Physics and Technology prevista per il 25.11.2005 PUBBLICATO A5054754 (PAD – 734917)PUBBLICATO A5054754 (PAD – 734917)