what js rust and how is created

Question

what js rust and how is created

In: Chemistry

Answer 1

Rust is iron oxide that incorporated water into the crystal structure. There is anhydrous iron oxide- think of a black fireplace poker, or a gun barrel. That black iron oxide is magnetite, it is a fairly good protective coating against corrosion. Rust incorporates water into the crystal structure, which makes rust expand like popcorn, and flake away, exposing fresh metal to air and water.