Abstract
In this study a fluid elastomer was applied by two different methods on a martensitic stainless steel substrate, in order to obtain coatings for protection against cavitation. The investigations regarding the resistance to cavitation erosion of the elastomeric coatings were carried out by the indirect vibratory method using the values of the cumulative erosion (material loss) developed during a testing period of 600 minutes with a 20 kHz ultrasonic vibrator at a peak-to-peak amplitude of 50 μm. The experimental results obtained in the laboratory have been processed statistically. They clearly pointed out that the deposition method significantly influences the cavitation resistance of the elastomer.
Highlights
In this study a fluid elastomer was applied by two different methods on a martensitic stainless steel substrate, in order to obtain coatings for protection against cavitation
This paper focused on the possibilities of preventing or decreasing the effects of cavitation erosion of hydraulic steel components by using protective elastomeric coatings
In order evaluate the resistance to cavitation erosion of the tested elastomeric coatings applied by the two methods, several specimens were tested for periods of 600 minutes each under the same conditions
Summary
In this study a fluid elastomer was applied by two different methods on a martensitic stainless steel substrate, in order to obtain coatings for protection against cavitation. Results and discussions In order evaluate the resistance to cavitation erosion of the tested elastomeric coatings applied by the two methods, several specimens were tested for periods of 600 minutes each under the same conditions. It is noted that the coating applied by spraying (sample C2) exhibited lower values of the cumulative erosion (CE) in comparison with the layer obtained by brushing (sample C1).
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