New Insights into the Thermal Expansion of neptunium dioxide (cas 12035-79-9) up to 2000 K
-
Add time:08/03/2019 Source:sciencedirect.com
We report for the first time the thermal expansion of NpO2 up to 2000 K and compare it to the one of UO2 and PuO2. Lattice parameters were measured as a function of temperature by in situ X-ray diffraction with neutral, reducing and oxidizing atmospheres. Data for NpO2 under neutral and reducing conditions perfectly superpose. Up to 1550 K, thermal expansion varies linearly with increasing temperature. Above, thermal expansion presents a curvature towards higher lattice parameters. No bibliographic data were available for this temperature range for comparison. As for the thermal expansion of UO2, we propose this curvature is certainly inferred by the formation of lattice defects in the oxygen sub-lattice. Expression of thermal expansion and coefficients of thermal expansion at given temperatures for NpO2, are presented.
We also recommend Trading Suppliers and Manufacturers of neptunium dioxide (cas 12035-79-9). Pls Click Website Link as below: cas 12035-79-9 suppliers
Prev:Neptunium characterization in uranium dioxide fuel: Combining a XAFS and a thermodynamic approach
Next:Reactions of dioxygen difluoride with neptunium oxides and fluorides) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Reactions of dioxygen difluoride with neptunium oxides and fluorides08/04/2019
- Neptunium characterization in uranium dioxide fuel: Combining a XAFS and a thermodynamic approach08/02/2019
- Neptunium interaction with uranium dioxide in aqueous solution08/01/2019
- Batch sorption and spectroscopic speciation studies of neptunium uptake by montmorillonite and corundum07/31/2019
- Thermodynamic assessment of the neptunium–oxygen system: Mass spectrometric studies and thermodynamic modelling07/30/2019
- Neptunium(V) transport in granitic rock: A laboratory scale study on the influence of bentonite colloids07/29/2019
- Molecular dynamics studies of neptunium dioxide (cas 12035-79-9)07/28/2019
- Thermal conductivity of neptunium dioxide (cas 12035-79-9)07/27/2019
- (Solid + gas) equilibrium studies for neptunium dioxide (cas 12035-79-9)07/26/2019