Anisotropy in the thermal expansion of uranium silicide measured by neutron diffraction
Research output: Contribution to journal › Article › peer-review
Electronic versions
Documents
- JNM_silicide - rev 01
Accepted author manuscript, 332 KB, PDF document
- JNM_silicide - figs and captions
Accepted author manuscript, 740 KB, PDF document
DOI
In-situ neutron diffraction patterns were collected for a sample of as-cast U3Si2 during heating to 1600 °C. Anomalous changes were observed above 1000 °C, including the formation of a new diffraction peak not belonging to P4/mbm U3Si2, unequal changes in the peak intensities and onset of anisotropic lattice expansion. The large data-set enabled derivation of a function-fitted isotropic thermal expansion coefficient to high precision, in close agreement with previous dilatometry results but reducing linearly with temperature over the studied interval. Anisotropy in the instantaneous lattice thermal expansion corresponded to anomalies reported by White et al. (2015) at a similar temperature.
| Original language | English |
|---|---|
| Pages (from-to) | 516-520 |
| Journal | Journal of Nuclear Materials |
| Volume | 508 |
| Early online date | 30 May 2018 |
| DOIs | |
| Publication status | Published - 1 Sept 2018 |
| Externally published | Yes |
Total downloads
No data available