Why electric poles are colored with silver paint?
It is an aluminium coating.Because the aluminium is high reactive metal it can resist from the corrosion and also it will increase life of pole.
Aluminum, a highly reactive metal rarely found in the environment in a free state. This is because it reacts to the oxygen present in the atmosphere to form Al2O3 or Aluminum Oxide.
Aluminum Oxide is a highly resistant material that is not easily corroded.Aluminum paints are rich in aluminum oxide and therefore have the ability to resist corrosion, which increases the iron poles ' life.
I am afraid not. These paints have aluminium powder not oxide. The corrosion proprties of aluminium do not figure here much as the powder particles are covered by the polymer of the paint. It gives an attractive appearance and reflects away heat.
Most electric poles are by the roadside. The reflectivity of the paint improves visibility especially at night which helps in avoiding a hit.