Estimation of the efficiency of inhibitor protection of steels against cavitation- erosive fracture
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The addition of inhibitors in small concentrations to water must not significantly change the hydrodynamic conditions on a cavitated surface. Therefore, in general, the revealed influence of inhibitors should be considered exclusively as a manifestation of the corrosion factor due to a change in the electrochemical conditions during the process of cavitation-erosive fracture. In the process of cavitation-erosive fracture of structural steels in water, if the influence of the corrosion factor is predominant, then one can considerably improve the workability of these steels by using highly efficient inhibitors. The method for estimation of the efficiency of the inhibitor protection against corrosion fatigue fracture proposed earlier in  can also be useful for cavitation-erosive fracture. Common symptoms concerning an increase in the resistance to corrosion mechanical fracture of both types by means of the inhibitor protection testify to the similarity of mechanisms of the influence of the medium on the initiation and growth of short fatigue cracks. This specific feature can be used in practice to increase the durability of structural elements under conditions of cyclic loading and cavitation.
KeywordsCavitation Piperidine Diethylamine Corrosion Fatigue Oxidation Current
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