Electron beam-induced decomposition of graphite fluoride |
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Authors: | Muneyuki Motoyama Tsuyoshi Nakajima Nobuatsu Watanabe |
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Institution: | Department of Industrial Chemistry, Faculty of Engineering, Kyoto University, Yoshida, Sakyo-ku, Kyoto, Japan |
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Abstract: | Irradiation of graphite fluoride with electron beams has been carried out on a electron probe microanalyzer. Radiation-induced decomposition took place predominantly instead of thermal decomposition. The decomposition tended to occur in the following order: powdery (CF)n, white flaky (CF)n, and (CF2F)n. The kinetics of the decomposition reaction induced by electron beams was evaluated by the ZAF correction of the measured intensities of F K- and C K-emission bands. It was found that the kinetic of the decomposition of graphite fluoride was of Avrami-Erofejev type; the rate equations were for (CF)n and -ln(1?α)=kt2 for (C2F)n. An application to the electron microbeam processing of graphite fluoride was suggested in relation to its unique physicochemical properties. |
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