The non destructive and nano-microstructural characterization of thermal-barrier coatings
Abbreviated Journal Title
PHYSICAL VAPOR-DEPOSITION; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; EB-PVD TBC; GROWN OXIDE; RESIDUAL-STRESS; NONDESTRUCTIVE EVALUATION; OXIDATION STRESSES; NICKEL-ALUMINIDE; DURABILITY; MECHANISMS; Materials Science, Multidisciplinary; Metallurgy & Metallurgical; Engineering; Mineralogy; Mining & Mineral Processing
The durability of thermal barrier coatings (TBCs) plays an important role in the service reliability and maintainability of hot-section components in advanced turbine engines for aerospace and utility applications. Photostimulated luminescence spectroscopy (PSLS) and electrochemical impedance spectroscopy (EIS) are being concurrently developed as complimentary nondestructive evaluation (NDE) techniques for quality control and life-remain assessment of TBCs. This paper discusses recent achievements in understanding the residual stress, phase constituents, and electrochemical resistance (or capacitance) of TBC constituents-with an emphasis on the thermally grown oxide. Results from NDE by PSLS and EIS are correlated to the nano- and microstructural development of TBCs.
"The non destructive and nano-microstructural characterization of thermal-barrier coatings" (2004). Faculty Bibliography 2000s. 4814.