METHOD FOR DETERMINING CORROSION RATE OF TRANSITION METALS IN OXYGEN-CONTAINING MEDIA Russian patent published in 2021 - IPC G01N17/00 

FIELD: materials testing.

SUBSTANCE: invention can be used to determine the corrosion rate of transition metals in oxygen-containing environments when the corrosion products are in a solid state of aggregation. The method for determining the corrosion rate of transition metals in oxygen-containing environments includes placing a sample in a corrosive environment and keeping it in it for a time t, after removing the sample from the corrosive environment, a section along the oxidation front of the sample without delamination of corrosion products is selected and its local quantitative spectral analysis by means of which the distribution of the weight content of the integrated mass fraction of the metal chemically bonded with oxygen and the mass of oxygen that has entered into chemical interaction with the metal is found, and the average corrosion rate K is calculated by the formula K = K=[n⋅m_O2/(1-n)]/t⋅S, where n is the distribution of the weight content of the integrated mass fraction of the metal chemically bound to oxygen; m_O2 is the distribution of the mass of oxygen that has entered into chemical interaction with the metal; S is the surface area of ​​the sample; t is the exposure time of the sample in an oxygen-containing environment.

EFFECT: ability to determine the rate of corrosion of transition metals in oxygen-containing environments with a high degree of reliability.

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