Pickling (metal)

Pickling is a metal surface treatment used to remove impurities, such as stains, inorganic contaminants, and rust or scale from ferrous metals, copper, precious metals and aluminum alloys.^[1] A solution called pickle liquor, which usually contains acid, is used to remove the surface impurities. It is commonly used to descale or clean steel in various steelmaking processes.

^ Eagleson, Mary (1994). Concise Encyclopedia Chemistry (revised ed.). Berlin: Walter de Gruyter. p. 834. ISBN 978-3-11-011451-5.

[eagleson-1] Eagleson, Mary (1994). Concise Encyclopedia Chemistry (revised ed.). Berlin: Walter de Gruyter. p. 834. ISBN 978-3-11-011451-5.

[1]