気化性防錆剤の防錆効果について

抄録

Recently Volatile corrosion inhibitor (V.C.I.) is applied in all circles to the prevention of corrosion of the iron and steel materials on vapour and liquid phases. Experiments have been made on the anticorrosive effect of the V.C.I. for boilers which are at rest or cleaned with acid. The results of the experiments come to the next conclusions. (1) The suitable concentration of V.C.I. in the liquid phase is 100 mg/l and V.C.I. of more than 100 mg/l is not more efficacious. (2) V,C.I. of 100 mg/l concentration have nearly the same effect as NaOH of 300 mg/l. (3) After the acid cleaning, the boilers must be washed well with NaOH solution and water, and V.C.I. should be used in vapour or liquid phase.