YAG:YSZ composites as potential thermographic phosphors for high temperature sensor applications

Development of high temperature phosphors for sensor coatings is of current interest for a number of technology sectors. Significant advances in production of high temperature sensing thermal barrier coatings (TBCs) have been made in recent years. However, there is still a requirement to modify exis...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2009-02, Vol.136 (1), p.52-59
Main Authors: Skinner, S.J., Feist, J.P., Brooks, I.J.E., Seefeldt, S., Heyes, A.L.
Format: Article
Language:English
Subjects:
Actuators
Coatings
Composite
Decay
Dysprosium
Luminescence
Luminescence sensing
Phosphors
Self-diagnostic coating
Sensors
Thermal barrier coatings
Thermographic phosphor
YAG
YSZ
Yttria stabilized zirconia
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Summary:Development of high temperature phosphors for sensor coatings is of current interest for a number of technology sectors. Significant advances in production of high temperature sensing thermal barrier coatings (TBCs) have been made in recent years. However, there is still a requirement to modify existing TBC systems to incorporate a phosphor component. In this work we report on the development of a composite material consisting of an active phosphor, Y 3Al 5O 12: Dy, distributed within a YSZ matrix. The luminescence performance and lifetime decay of the composite material extends to 1200 °C. We also find that the composite spectrum is composed of characteristic YAG and YSZ components.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2008.10.070