Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7964593 | Journal of Nuclear Materials | 2016 | 8 Pages |
Abstract
To help elucidate the diffusive behavior of silver in the ZrC coating of the TRISO-coated particle, a new diffusion experimental technique, called the encapsulating source method, has been developed by constructing a constant source diffusion couple between ZrC and Ag gas originated from Zr-Ag solid solution. Scanning electron microscopy (SEM), wavelength-dispersive X-ray spectroscopy (WDS), electron backscatter diffraction (EBSD) and optical methods were used to analyze the diffusion couple annealed at 1500 °C. The resultant diffusion coefficient of Ag in single-crystalline ZrC0.84 at 1500 °C was experimentally determined to be about 2.8 (±1.2) Ã 10â17 m2/s.
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Authors
Young-Ki Yang, Todd R. Allen,