Sep 25, 2019 · 316L is an austenitic stainless steel that is widely applied in hydraulic machinery such as pumps and pipes because of its excellent corrosion and pitting resistance [1, 2]. Cavitation erosion (CE) is harmful, as cavities formed in the liquid collapse near the solid boundary, resulting in the erosion and wear of materials. Cavitation Erosion-Corrosion Behavior of Fe-Cr Steel A resistance of cavitation erosion-corrosion of the AISI 420 martensitic stainless steel was evaluated in this study. The cavitation resistance of this stainless steel has been examined using an ultrasonic vibratory method by applying water-voltage combination effect. The curves of cumulative material loss and erosion rate were attained and discussed.
The microstructures of the alloyed layers were studied by scanning electron microscopy and X-ray diffractometry. The corrosion and cavitation erosion characteristics in 3.5% NaCl solution at 23 °C were studied by potentiodynamic polarization technique and by means of a 20-kHz ultrasonic vibratory facility, respectively. Cavitation erosion and corrosion behaviour of laser The cavitation erosion characteristic of laser surface melted 316L stainless steel was studied by means of a 20 kHz ultrasonic vibrator at a peak-to-peak amplitude of 30 m in 3.5% NaCl solution at temperatures 23° and 50 °C. Its pitting corrosion behaviour was also studied at 23 °C by electrochemical method. Corrosion and Cavitation Erosion Behaviors of Friction weld nugget zone, and the top had the highest pitting corrosion resistance.17 NAB is widely used in marine environments be-cause of its high corrosion and cavitation erosion re-sistance.18-19 It is one of the main materials for ship propellers. Since the propeller rotates at high speed in seawater, it suffers both corrosion and cavitation erosion.
Apr 15, 2020 · In principle, the deterioration of a surface due to cavitation erosioncorrosion starts in a sudden surge of bubbles, which final result in deformation and eventually damage of the protective film. As a result, surging of bubbles would expedite corrosion, leading to pitting. Erosion corrosionturbulence and high flow velocities, resulting in erosion corrosion. A combination of erosion and corrosion can lead to extremely high pitting rates. Erosion-corrosion is most prevalent in soft alloys (i.e. copper, aluminum and lead alloys). Alloys which form a surface film in a corrosive environment commonly Investigation on the Corrosion and Cavitation Erosion investigate the corrosion behavior of the cast and FSP NAB in sulfide-containing 3.5 % NaCl solution. Ultrasonically vibrating cavitation erosion tests were conducted to evaluate the cavitation erosion behavior. The corrosion product film has been characterized, and the synergism between corrosion and cavitation erosion have been analyzed.
Nov 25, 2016 · The temperature rise by cavitation bubble collapse and sample vibration is proved by the higher temperature of the sample than that of the corrosive solution. The surface morphologies of samples in cavitation erosioncorrosion tests show more extensive and worse local corrosion than that in the static case. The maximum depths of erosioncorrosion pits are 39.5, 31.8, and 24.6 m,