Self-healing primers extend protection

 
Zinc-rich coatings are used in a wide range of industries to protect steel substrates in extremely corrosive environments. However, with exposure to a corrosive environment over time, the zinc particles corrode to form a non-conductive oxide layer around the particles, decreasing the sacrificial protective capability of the coating. Incorporating a self-healing additive in organic zinc-rich primers can extend the lifetime of the protective system.