MainzSliding raindrops build up to 9,000 volts.
Corrosion models for aircraft and bridge coatings omit this electrical mechanism entirely.
The charge punches through a coating’s insulation before the drop even touches the metal, researchers found.
Thicker coatings resisted the damage, but aircraft and optical coatings must stay thin.
How each outlet framed it
- Ars Technica
- identifies slide electrification (9,000-volt charge) as overlooked electrochemical mechanism puncturing protective coatings
Sources: Ars Technica