EMBEDDED OPTICAL SENSORS FOR THERMAL BARRIER COATINGS

Technical Report · Thu Dec 16 00:00:00 EST 2004

DOI:https://doi.org/10.2172/843110· OSTI ID:843110

Clarke, David R

In this first year of the program we have focused on the selection of rare-earth dopants for luminescent sensing in thermal barrier coating materials, the effect of dopant concentration on several of the luminescence characteristics and initial fabrication of one type of embedded sensor, the ''red-line'' sensor. We have initially focused on erbium as the lanthanide dopant for luminescence doping of yttria-stabilized zirconia and europium as the lanthanide for luminescence doping of gadolinium zirconate. The latter exhibits a temperature-dependent luminescence lifetime up to at least 1100 C. A buried layer, ''red-line'' sensor in an electron-beam deposited yttria-stabilized zirconia coating with erbium has been demonstrated and exhibits a temperature-dependent luminescence lifetime up to at least 400 C.

• Research Organization: Univ. of California (United States)
• DOE Contract Number: FG26-03NT41794
• OSTI ID: 843110
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PROTECTIVE COATINGS
ERBIUM
EUROPIUM
FABRICATION
GADOLINIUM
LUMINESCENCE
RARE EARTHS
THERMAL INSULATION
DOPED MATERIALS
MONITORS
ZIRCONIUM OXIDES
YTTRIUM OXIDES
GADOLINIUM OXIDES