Investigation into Morphology of Cavitation Erosion-Corrosion Pits on the Surface of Carbon Steel

Abstract

Nano-sized films associated with the ring areas
formed around micropits in cavitation erosion experiments
were investigated. The corrosion behavior and vibratory
cavitation erosion tests of mild carbon steel in 3% NaCl
distilled water were carried out. The results showed that the
nano-sized films associated with the ring areas formed
around micropits in cavitation and free cavitation tests have
a similar shape. The study proved that the nano-structure
and the ring areas formed around micropits are the result of
corrosion effects and not as a result of thermal effects
related to the collapse of the bubbles.