Non-destructive CMAS-infiltration characterization of thermal barrier coatings

US10837918B2 · kind B2 · utility

Assignees

• DEUTSCHES ZENTRUM FÜR LUFT—UND RAUMFAHRT E.V. · DE
• University of Central Florida Research Foundation · US

Inventors

• Ravisankar Naraparaju · Cologne, DE
• Uwe Schulz · Neunkirchen, DE
• Seetha Raghavan · Orlando, US
• Estefania Bohorquez · Orlando, US

Key dates

• Filing date: Mar 23, 2018
• Grant date: Nov 17, 2020
• Expiry date: Jun 27, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention provides a non-destructive method of characterizing CMAS infiltration and CMAS assisted damage in thermal barrier coatings (TBCs). Such approach is especially relevant for determining the lifetime of coatings on e.g. turbines or parts of the turbines such as blades or in-liners of the combustion chambers. The turbines can be gas turbines or high-pressure turbines or others and may be stationary or used for example in aviation.