oxide

Từ điển WordNet

    n.

  • any compound of oxygen with another element or a radical

Oil and Gas Field Glossary

In the steel industry, this term usually refers to oxide of iron, of which there are three principal types: FeO, Fe3O4 and Fe2O3. In addition, there are many mixtures of these oxides which form on the surface of steel at different temperatures and give the steel different colors, such as yellow, brown, purple, blue and red. Oxides must be thoroughly removed from the surface of steel objects which are to be coated.