Corrosion And How To Prevent It
https://gumroad.com/r9lrukg744/p/corrosion-and-how-to-prevent-it-3c9daaa7-d9fb-4874-9435-b1a09bd0f715
Zinc will provide cathodic protection, which means that in case of coating damage down to the steel, zinc will be sacrificed and thus prevent the steel from corroding.