| 摘要 |
A method of providing a durable, corrosion inhibiting film on the surface of copper or copper-containing metal in contact with a dynamic, aggressive aqueous system having a pH substantially neutral to alkaline which comprises adding in a non-continuous manner a sufficient amount for the purpose of an alkyl benzotriazole having the formula: <CHEM> wherein R is a C3 to C6 linear alkyl, and permitting contact of the benzotriazole for a time sufficient to provide the film and thereafter discontinuing the feed of the benzotriazole and permitting any residual benzotriazole in the aqueous system to deplete. |
