Röntgenstudier av formationen av luminiscerande partiklar för temperaturmätningar på FeCrAl stål
| Reference number | |
| Coordinator | Chalmers Tekniska Högskola AB - Energi och Material |
| Funding from Vinnova | SEK 500 000 |
| Project duration | March 2020 - December 2022 |
| Status | Completed |
| Venture | Research infrastructure - utilisation and collaboration |
| Call | Industrial pilot projects for the utilisation of neutron and photon based techniques at large-scale infrastructures - Autumn 2019 |
| End-of-project report | 2019-05306_Kanthal.pdf (pdf, 283 kB) |
Important results from the project
The purpose was to study the presence and spontaneous formation of Y3Al5O12 (YAG) particles on the surface of an FeCrAl alloy at high temperature, by variable temperature X-ray diffraction measurements at the Swedish beamline P21.2 at the X-ray synchrotron radiation facility PETRA III in Hamburg, Germany.
Expected long term effects
The X-ray diffraction measurements did, unfortunately, not reveal the spontaneous formation of YAG-particles in FeCrAl, which probably is a consequence of that the samples were annealed at a too low temperature and/or for a too short time. Therefore, it is not clear if the idea of an “intrinsic optic thermometer” based on the spontaneous formation of luminescent YAG particles is feasible.
Approach and implementation
With the aim to observe the formation of YAG-particles at high temperature, the X-ray diffraction measurements were performed in-situ, from room temperature up to 1000 °C, with an annealing time of ca. 60 minutes at each temperature. The temperature was controlled by a “Linkam stage”, as supplied by PETRA III. Researchers at Chalmers performed the experiments at PETRA III, as well as the initial data analysis and evaluation. All project partners participated in the further evaluation and discussion of the measured data.