R. Mevrel, THERMAL BARRIER COATINGS FOR AIRCRAFT TUR BINE AIRFOILS - STATE-OF-THE-ART AND PERSPECTIVES, La Recherche aerospatiale, (5-6), 1996, pp. 381-392
This paper presents a short overview on thermal barrier coatings for a
ircraft engines. These coatings designed to protect airfoils in the ho
ttest stages of gas turbines represent an important challenge, both te
chnical and economical. After a description of the different processes
(commercial and experimental) used to deposit these coatings and the
materials employed, with their limits, the main research and developme
nt themes are briefly outlined: life prediction modelling, thermal con
ductivity, oxide growth at the ceramic/metal interface, search for alt
ernative materials for higher temperatures.