Strong flashover suppression
By grading permittivity and conductivity, this coating greatly enhances surface electrical strength in compressed SF6, offering reliable flashover mitigation for high-voltage apparatus.
Wang, Chao · Yu-Long, Yang · Cheng-Lin, Hou · Li, Wendong · Chen, Sile · Chen, Zhaoquan · Zhang, Guanjun
Surface and Coatings Technology 2025
ε-SFGM and ε/σ-SFGM coatings show excellent electrical strength enhancement in compressed SF6 at power frequency
In vacuum, only ε/σ-SFGM with SiC fillers shows flashover mitigation
σ-SFGM with CNT fillers deteriorates surface electrical strength in both SF6 and vacuum