CONTROL METHOD OF STABILITY OF STEEL PRODUCTS AGAINST ISOLATED CORROSION Russian patent published in 2009 - IPC G01N17/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy field, particularly to control of steel products stability provided for operation in corrosive mediums, impacting attack by corrosion on metals, including in aqueous mediums. Essence of method consists in from steel products there are drawn examples, there are manufactured samples with specially prepared surface. Surface is treated by electrochemical method in potentiodynamic mode by reactant, containing chlorine ions. Ions concentration of chlorine in solution is kept 10-30 g/l, potential is changed at a rate 1.2-2.5 V/hour in the range from -(650-500)mV to -(350-250) mV in direct and then backwards, fixing correlation of current density to potential. About corrosion resistance judging by electrochemical properties of steel, specified from received correlation.

EFFECT: increasing of information value and significance of express control method of steel products stability against isolated corrosion subject to complex impact on corrosive processes of chemical composition, microstructure and pollution degree of steel by nonmetallics.

9 cl, 4 tbl