Method for designating a component having a heat insulation layer and for determining its operating time
US8252601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2008 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Aug 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for designating a component, coated with a heat insulation layer including zirconium dioxide (ZrO2) stabilized with yttrium oxide (Y2O3) [YSZ], and for determining its operating time or operating temperature is provided. The method includes doping the heat insulation layer and marking the doped heat insulation layer, with at least one metal oxide in at least one surface region of the component. The metal oxide is selected such that the doped region of YSZ is visible or can be made optically visible in order to designate the component. The method also includes comparing a slower or faster change in lattice parameters of the doped YSZ region, as compared with undoped YSZ, and determining the operating time of the component under temperature by comparing the lattice parameters with a known calibrating characteristic curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.