Reactions between SiC and SrO at High Temperatures
- 1 January 1973
- journal article
- Published by Taylor & Francis in Journal of Nuclear Science and Technology
- Vol. 10 (6) , 360-366
- https://doi.org/10.3327/jnst.10.360
Abstract
A mixture of SiC and SrO was heated in air, in Ar and in vacuum, and the reaction products were determined by powder X-ray diffraction. The reaction began above 1,000°C and the products varied, depending on the oxygen content in the heating atmosphere. For example, in the case of a mixture of 1:1 in atomic ratio, SrO·SiO2 formed in air, while in oxygen-free atomsphere, SrC2 and Sr were produced besides SrO·SiO2. It was also found that the powder X-ray diffraction pattern of SrO·SiO2 obtained in the present experiment differed in part from O'Daniel's data. It is concluded that study of the microstructural changes in the SiC coating layer at high temperatures should be most important for assuring the retainment of the fission products Sr and Ba in coated particle fuels.Keywords
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