Method of assessment of cavitation-erosion wear resistance of metals in electrolyte media

Abstract

The paper considers a method of assessing the cavitation-erosion wear resistance of metals, which can be used to obtain data on the cavitation-erosion wear resistance of materials and coatings in laboratory conditions, which correspond to the data of operational tests. The essence of the method is the intensification of corrosion processes during cavitation-erosive wear of samples on a magneto-strictive vibrator (MSV) with the help of their anodic polarization. The value of the polarization current is found by the values of the coefficient of amplification of the mechanical factor of the destruction of the surface during tests on a magneto-strictive vibrator (MSV) and the data of field tests. Corrosion current in a given environment is found during full-scale tests. To reduce the labor intensity and time of research, operational data is obtained on a specially designed and manufactured installation, which is a simplified version of a hydrodynamic tube (HT). The developed assessment method applies only to corrosive electrolyte environments.