GS0408 Measurement of Young's Modulus of Thermal Barrier Coatings at Elevated Temperature

Abstract

Thermal barrier coating (TBCs) are the indispensable technology for hot-section components of an advanced gas turbine. A TBC consists of a metallic bond-coat (BC) and a ceramic top-coat (TC) on a substrate. In present study, the Young's modulus of the TC from the TBC specimen, which is the substrate with the BC and the TC was determined by the newly developed flexural resonance method at an elevated temperature. Several kinds of TBC specimens with a different TC thickness were produced by an air plasma spraying. It was confirmed that the Young's modulus with high reproducibility can be obtained by this flexural resonance method.