Rare-earth doped thermal barrier coating bond coat for thermally grown oxide luminescence sensing

Fouliard, Quentin; Ghosh, Ranajay; Raghavan, Seetha

Rare-earth doped thermal barrier coating bond coat for thermally grown oxide luminescence sensing

Patent · Tue May 31 04:00:00 EDT 2022

OSTI ID:1892987

Fouliard, Quentin; Ghosh, Ranajay; Raghavan, Seetha

A thermal barrier coated component, such as a turbine blade formed from a superalloy substrate, includes a thermal barrier coating applied onto the substrate. A metallic bond coat layer is on the substrate and includes rare-earth luminescent dopants. A ceramic top coat layer is on the bond coat layer. A temperature sensing thermally grown oxide (TGO) layer is formed at the interface of the bond coat layer and ceramic top coat layer. The temperature sensing TGO layer includes grown rare-earth luminescent ions migrated from the metallic bond coat layer in an amount sufficient to enable luminescence sensing of the TGO layer for real-time phosphor thermometry temperature measurements at the TGO layer.

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Research Organization:: Univ. of Central Florida, Orlando, FL (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FE0031282

Assignee:: University of Florida Research Foundation, Inc. (Orlando, FL)

Patent Number(s):: 11,346,006

Application Number:: 17/034,065

OSTI ID:: 1892987

Country of Publication:: United States

Language:: English

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