Rust on metal is caused by surface metal atoms and molecules forming metal oxides in the presence of oxygen and water. Iron is the most common material that rusts, forming iron oxides, but most other metals can rust as well.
Not all metal rusts, but the metals that do rust do so because of an oxidation reaction between the metal and water and oxygen. Oxidation is the process by which a substance incorporates oxygen into its molecular structure.
Many metals oxidize and corrode, but rust, or iron oxide, is specific to ferrous metals such as steel. Rust is formed when oxygen bonds with an atom of iron to form an iron oxide molecule. This molecule is considerably larger than the surrounding iron molecules, so it q...
There are several products that remove rust from metal by using either phosphoric or hydrochloric acid to dissolve it. These solutions typically involve soaking time for maximum effectiveness. There are also nontoxic solutions that use an acid-free process to take away ...
Rust is the product of a chemical reaction in which iron oxidizes in the presence of an electrolyte. In order to form iron oxide, exposed iron must bond with oxygen, which usually happens when the iron surface gets wet.
Stainless steel, gold, silver, platinum and aluminum (after forming a barrier from minimal exposure) are all rust-proof metals. Rust is the process of iron oxidization, so it specifically refers to the iron content in a metal.
To clean rust off metal, sand or grind the rust off of the surface. Alternately, use a chemical rust removal product to dissolve the rust or seal and repaint the item.