Investigation on Synergistic Effect of CF3I Mixed Gas with Different Buffer Gases

In this paper, the synergistic effect of CF
₃
I mixed gas is theoretically analyzed using the Boltzmann method and experimentally studied under different applied voltage, pressure and electric field inhomogeneity. The experimental results show the inversion of synergetic effect, which reflects the influence of external conditions on synergetic effect. The results show that CF
₃
I/N
₂
and CF
₃
I/CO
₂
mixtures under slightly uneven electric field at normal pressure have synergistic effect. CF
₃
I/CO
₂
mixtures under power frequency voltage and lightning impulse have better synergistic effect than CF3I/N2. The effect of macro parameters on synergetic effect is different for different buffer gases. For CF
₃
I/N
₂
mixture, the synergistic effect of the mixture can be improved by increasing the pressure and increasing the electrode gap distance. For CF
₃
I/CO
₂
, due to the abnormal breakdown of the mixture, negative synergistic will occur at some pressure and gap distance.