Coating example sentences

The vegetative cells have a cellulosic wall usually covered on the outside by a gelatinous coating of algin.The black coating on silver and the green coating on copper are other examples of corrosion.So the object is made from a cheaper metal and only a coating of chromium over it is deposited.So, a coating of zinc is deposited on iron to protect it from corrosion and formation of rust.However, if these are accidentally scratched, the shiny coating comes off revealing a not so shiny surface beneath.However, with repeated use, the gold coating wears off, revealing silver or some other metal beneath.If hydrogen gas is passed over this heated material (CuO), the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained.In both these cases, a metal has a coating of another metal.Have you noticed the colour of the coating formed on copper and silver? When a metal is attacked by substances around it such as moisture, acids, etc.Borax is also used as a flux for soldering metals, for heat, scratch and stain resistant glazed coating to earthenwares and as constituent of medicinal soaps.He succeeded in obtaining a coating of copper on carbon rod.It is widely used in industry for coating metal objects with a thin layer of a different metal (Figureure1 8).