Texture Evolution in U-10Mo Nuclear Fuel Foils during Plasma Spray Coating with Zr

Quantum Beam Science

卷:2

Shigehiro Takajo¹  Sven C. Vogel¹  Kendall J. Hollis²  Dustin R. Cummins²  David E. Dombrowski²  Eric L. Tegtmeier² 

[1] Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;

[2] Sigma Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;

关键词: U-10Mo;    nuclear fuel;    texture;    spray coating;   

DOI  :  10.3390/qubs2020012

来源: DOAJ

【 摘 要 】

A uranium-molybdenum alloy clad in 6061 aluminum has the potential to lead to a wide application of low-enriched uranium fuels, replacing highly enriched uranium for research reactors. A Zr coating acts as a diffusion barrier between the fuel and the aluminum cladding. In this study, U-10Mo (mass %) was coated with Zr using a plasma spray technique recognized as a fast and economical coating method. Neutron time-of-flight diffraction was used to study the microstructure evolution by quantifying the phase fractions of involved phases as well as the texture evolution of U-10Mo and Zr during plasma spray coating with Zr. Quantitative texture analysis revealed that the texture was drastically changed for high coating temperatures, likely due to selective grain growth. Furthermore, the Zr coating showed a preferential orientation, which could be correlated with the initial texture of the uncoated U-10Mo. This could be explained by the epitaxial growth of the Zr on the U-10Mo substrate.

【 授权许可】

Unknown