What's Rust? > 자유게시판

You're in all probability acquainted with the harm rust can do to car in the winter, or a bike left outdoors within the rain. However what's rust, actually? ­R­ust is the common name for a quite common compound: iron oxide. Iron oxide, the chemical Fe2O3, is common as a result of iron combines very readily with oxygen - so readily, in reality, that pure iron hardly ever happens in nature. Iron (or steel) rusting is an example of corrosion: an electrochemical course of involving an anode (a bit of steel that readily offers up electrons), an electrolyte (a liquid that helps electrons move) and a cathode (a chunk of metallic that readily accepts electrons). As oxygen combines with the steel, electrons are liberated. When they flow through the electrolyte to the cathode, the steel of the anode disappears, swept away by the electrical movement or transformed into metallic cations in a type equivalent to rust. ­For iron to develop into iron oxide, three things are required: iron, water and oxygen.