A new study from the Max Planck Institute reveals that raindrops can acquire charges up to 9,000 volts as they slide across surfaces, enabling them to electrically puncture protective insulating coatings rather than merely abrade or dissolve them. This challenges the conventional understanding of rain-induced corrosion and suggests existing protective strategies may be fundamentally flawed.
Background
Traditional corrosion models attribute rain damage to dissolved salts, acids, and mechanical abrasion, guiding the development of paints, polymer films, and oxide layers. This research introduces slide electrification as a previously overlooked mechanism that can compromise coating integrity.
- Source
- Ars Technica
- Published
- Sep 1, 2026 at 01:11 AM
- Score
- 7.0 / 10