Potentiometric Assessment of Intergranular Corrosion in Stainless Steels

The article discusses the measurement of the total electrode potential and the basic patterns of its establishment for heterogeneous corroding alloys with increased corrosion resistance, with the aim of applying the potentiometric method to determine resistance against intergranular corrosion. In order to maintain the reliability criterion of the AMU method according to GOST 6032-2017 the dependence of the resistance of stainless steels to intergranular corrosion and the value of their electrochemical potential on the properties of the environment has been taken into account by using a solution of sulfuric acid and cooper sulfate as the test electrolyte. For the same purpose, the preparation of samples from blanks, their preparation, provoking solution were carried out using the AMU method in accordance with the requirements of GOST 6032-2017.

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