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JEET, Vol. 13, No. 6, November 2018
Decomposition Properties of Trifluoroiodomethane under Discharges and Interruptions
Deng-Ming Xiao
Area C - Electrophysics and Applications
Abstract This paper is devoted to detecting decomposition characteristics of Iodotrifluoromethane (CF3I) under alternating current (AC) discharges or load current interruptions. The decomposition products are measured utilizing chromatography-mass spectroscopy. It is found that less than 1% CF3I gas decomposed after several interruptions at load current of 200 A or hundred times of AC discharges. However, under interruptions at a current of 400 A, more than 95% CF3I gas decomposed into carbon tetrafluoride (CF4) and hexafluoroethane (C2F6). The equilibrium compositions based on Gibbs free energy minimization of CF3I was calculated to explain the decomposition mechanism.
Keyword CF3I,Decomposition products,Interruption.
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