In a modern high-temperature nuclear reactor, safety is achieved by encapsulating the fuel elements by CVD-layers of pyrolytic carbon and silicon carbide (SiC) to prevent the fission products release. Some studies have raised doubts on the effectiveness of SiC layer as a diffusion barrier to fission fragments due to 110mAg released from the coated particle at high temperatures ranging from 1500°C to 1600°C .
Diffusion of Silver in Single Crystalline 6H-SiC
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Hlatshwayo, TT, van der Berg, NG, Friedland, E, Malherbe, JB, & Chakraborty, P. "Diffusion of Silver in Single Crystalline 6H-SiC." Proceedings of the Fourth International Topical Meeting on High Temperature Reactor Technology. Fourth International Topical Meeting on High Temperature Reactor Technology, Volume 2. Washington, DC, USA. September 28–October 1, 2008. pp. 763-764. ASME. https://doi.org/10.1115/HTR2008-58198
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