Damage mechanisms in cavitation erosion of nitrogen-containing austenitic steels in 3.5% NaCl solution

Paolantonio, Mario; Hanke, Stefanie

doi:10.1016/j.wear.2020.203526

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…Passivation metals also have good repassivation performance, meaning that they can carry out repassivation self-repair when their surfaces are damaged, improving service performance in corrosive media [17][18][19][20]. Consequently, passivation metals, especially stainless steels, are widely used in aerospace, nuclear energy, marine and other industrial fields, particularly in the presence of CE, due to their superior corrosion resistance and good mechanical properties [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cavitation Intensity on the Cavitation Erosion Behavior of 316L Stainless Steel in 3.5 wt.% NaCl Solution

Zhang

et al. 2022

Metals

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In this study, the cavitation erosion behavior of 316L stainless steel under different cavitation intensities in 3.5 wt.% NaCl solution was investigated with scanning electron microscopy and various electrochemical tests. Results indicated that cavitation intensity corresponding to CE amplitude of 5 μm was lower than that of the mechanical bearing capacity of passive films. When subjected to cavitation erosion (CE), Open circuit potential (OCP) shifted to the noble direction instantaneously, which was mainly attributed to enhanced oxygen transfer of the cathode due to stirring effects of CE. By contrast, high cavitation intensities corresponding to CE amplitudes of 25 μm and 55 μm exceeded the mechanical bearing capacity of passive films, causing significantly reduced OCP associated with metal dissolution of the anode from mechanical damage. Potentiostatic polarization and Mott–Schottky tests showed that 316L SS subjected to low cavitation intensities displayed good repassivation properties. However, repassivation performance was markedly weakened when high cavitation intensity was applied, resulting in weaker protection of the passive films with high carrier density.

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Section: Introductionmentioning

confidence: 99%

Effect of Cavitation Intensity on the Cavitation Erosion Behavior of 316L Stainless Steel in 3.5 wt.% NaCl Solution

Zhang

et al. 2022

Metals

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“…Furthermore, some experimental studies show that the pressure on the surface caused by the bubbles collapse generate a shock wave range from 1.3± 0.3 GPa [11,12]. Patella et al found the importance of the characteristics and properties of the materials that are impacted by the bubbles [13].…”

Section: Introductionmentioning

confidence: 99%

Study of Cavitation Erosion Phenomenon at Stainless Steel AISI 304 Base and with SiC Coating

Vite-Torres

Moreno-Ríos²,

Villanueva-Zavala

et al. 2022

Applied Engineering Letters

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The phenomenon of cavitation erosion consists of the formation, growth, and collapse of bubbles in liquid media. The bubbles are responsible for the damage generated to metal and non-metal materials. Consequently, there is a pronounced degradation on the material surface, producing a scar in the impact area of the bubbles, and eventually the detachment of material. This experimental work aims to determine the performance of AISI 304 stainless steel base and coated with SiC. The SiC coating was obtained by the Chemical Vapor Deposition technique assisted by plasma. The tests were done through an ultrasonic cavitometer with a frequency of 28 kHz in an aqueous medium using tap water. According to the evidence of mass loss, results indicate that the stainless steel coated with SiC have better wear resistance than stainless steel base. In addition, failure mechanisms as cracking, plastic deformation, pits and others, were identified.

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“…Qin and Alehossein 14 considered the temperature increase and heat transfer rate in a bubble collapse case with finally the improvement in computational fluid dynamics (CFD) prediction accuracy. Paolantonio and Hanke 15 studied the mechanism of cavitation erosion damage on austenitic stainless steels. Wu et al 16 found that the collapsing shock wave will interact with free solid particles and accelerates the damage.…”

Section: Introductionmentioning

confidence: 99%

Analyses of the spatial and temporal features of the blade pressure‐side cavitation in a pump‐turbine runner in the pump mode

Tao

Jin

et al. 2022

Energy Science & Engineering

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In the pump mode of pump-turbine, cavitation usually happens in runners because of the local pressure drop on the blade leading-edge. At over-load, pressure drop and cavitation occur on the runner blade pressure side. In conventional studies, the spatial and temporal features of the blade pressure-side cavitation are difficult to understand. In this study, the runner blade pressure-side cavitation is studied in a pump-turbine in pump mode at over-load. Local low pressure and cavitation are found on runner blade pressure-side at leading-edge near shroud. Moreover, small-scale gathering cavitation is also observed on the blade suction-side with connecting the large-scale pressure side cavity. As a breakthrough in flow analysis, the pulsation tracking network (PTN) method is applied to track the spatial and temporal features of cavitation. The timeaccumulated intensity, pulsation amplitude, frequency, and phase are analyzed for cavitation based on PTN. The stably-gathering strong-intensity cavitation sites are indicated by time-accumulated intensity. Based on the pulsation amplitude contour, strong pulsating cavitation is found on the edges of the gathering strong cavities. Frequency and phase analyses indicate the cavitation propagation along the blade-to-blade direction and reveal the reason of the connecting cavitation phenomenon. The spatial and temporal features of cavitation is well investigated.

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Damage mechanisms in cavitation erosion of nitrogen-containing austenitic steels in 3.5% NaCl solution

Cited by 11 publications

References 21 publications

Effect of Cavitation Intensity on the Cavitation Erosion Behavior of 316L Stainless Steel in 3.5 wt.% NaCl Solution

Effect of Cavitation Intensity on the Cavitation Erosion Behavior of 316L Stainless Steel in 3.5 wt.% NaCl Solution

Study of Cavitation Erosion Phenomenon at Stainless Steel AISI 304 Base and with SiC Coating

Analyses of the spatial and temporal features of the blade pressure‐side cavitation in a pump‐turbine runner in the pump mode

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