Abstract

To improve the CFCs characteristics of chemical erosion, tritium retention, and H 2O/air resistivity, silicon doped CFCs were developed in the framework of European Technology programme. The tritium retention, H 2O reaction kinetics, outgassing behaviour and depletion of silicon in doped CFCs were investigated as a function of silicon concentration and temperature. The results show that silicon in bulk of CFCs decreases the tritium bulk retention and the H 2O reactivity. However, it has been observed that the concentration of silicon is slightly decreased at elevated temperature. This paper presents the experimental results and the consequence is discussed.

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