Multi-functioning material compositions, structures incorporating the same and methods for detecting ageing in luminescent material compositions
US9981878B2 · kind B2 · utility
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26Claims
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Key dates
| Filing date | May 26, 2009 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Dec 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8427
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A multi-functional material composition comprising a zirconia host and containing a luminescent lanthanide oxide additive, in particular dysprosia (Dy2O3), wherein the lanthanide oxide additive is effective both in stabilizing the zirconia and providing for luminescent temperature sensing, and a method of determining a remaining useful life-time for the luminescent material composition from the proportion of a monoclinic phase (m) in the material composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.