The refractory, Y2O3, doped with Eu, is suitable for high-temperature surface thermometry when excited by a uv laser. The 612-nm fluorescence lifetime has a logarithmic dependence with temperature from about 700°C to beyond 930°C. Many applications are possible, with specific emphasis on rapidly rotating turbine components operating at high temperatures.
REFERENCES
1.
M. R.
Cates
et al. (1983
). Remote Thermometry of Moving Surfaces of Laser-Induced Fluorescence of Surface-Bonded Phosphor
. ICALEO
.2.
M. R.
Cates
et al. (1984
). Applications of Pulsed-Laser Techniques and Thermographic Phosphors to Dynamic Thermometry of Rotating Surfaces
. ICALEO
.3.
M. S.
Elmanharawy
, et al. (1978
). Spectra of Europium-Doped Yttrium Oxide and Yttrium Vanadate Phosphors
. CZECH. J. PHYS.
B28
: 1164
–1173
.4.
H.
Yamamoto
and K.
Urabe
(1982
). Heat Sensitization Mechanism of Eu3+ Luminescence in (Y, In)2O3
. J. ELECTROCHEMICAL SOC.
Vol. 129
, No. 9
: 2069
–2074
.5.
K. A.
Wickersheim
and R. A.
Lefeuer
(1964
). Luminescent Behaviour of the Rare Earths in Yttrium Oxide and Related Hosts
. J. ELECTROCHEMICAL SOCIETY.
Vol. 111
, No. 1
: 45
–51
.6.
R. C.
Ropp
(1967
). Energy Transfer in Tb+3 and Eu+3-Activated Y2O3
. J. OPT. SOC. AM.
Vol. 57
, No. 2
: 213
–216
.7.
B. W.
Noel
et al. (1985
). A Proposed Method for Remote Thermometry in Turbine Engines
. Proceedings of the AIAA 21st Joint Propulsion Conference
.
This content is only available via PDF.
© 1986 Laser Institute of America.
1986
Laser Institute of America
You do not currently have access to this content.