The results show that the coronaresistance time of hybrid film is much more than the original one and the time rose nonlinearly along with the thickness of the film.
The nano-alumina dispersion solution can then be mixed with an imide coating to provide for a wire coating to give the wire improved abrasion, COF, and coronaresistance.
One reason is that the electrical resistance in the corona is typically quite low - too low to account for the explosive rate at which solar flares brighten.