The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

Xu, Jiang; Peng, Shuang; Li, Zhengyang; Jiang, Shuyun; Xie, Zonghan; Munroe, Paul

doi:10.1016/j.ultsonch.2020.105406

Cited by 23 publications

(7 citation statements)

References 60 publications

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“…Due to low H + concentrations in neutral solutions, the hydrogen evolution reaction can be ignored. Therefore, fluctuations in potentials should be closely related to two competitive factors including an increase in mass transfer of oxygen (Equation ( 1)) and the destruction of passive films (Equation ( 2)) [41,42].…”

Section: Ocp Measurements Under Alternating Ce and Ce Statesmentioning

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: Ocp Measurements Under Alternating Ce and Ce Statesmentioning

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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“…This is largely ascribed to the protective effect of the passivation film (Ref 36). Essentially, the electrochemical tests documented in (Ref [37][38][39] prove unanimously that electrochemical properties of the passivation film formed due to ultrasonic cavitation differ considerably from those of the film produced in quiescent liquid. Moreover, the passivation film can improve the resistance to cavitation erosion, as confirmed in (Ref 40).…”

Section: Surface Morphologymentioning

confidence: 99%

Synergetic Effect of Corrosion and Ultrasonic Cavitation Erosion on Leaded Brass

Liu

Chen

Kang

et al. 2021

J. of Materi Eng and Perform

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The present study aims to reveal behaviors of leaded brass as it is exposed to the synergetic effect of corrosion and cavitation erosion. The specimens were submerged in seawater for ultrasonic cavitation erosion experiments. The cumulative mass loss, surface microstructure and three-dimensional surface morphology were analyzed to characterize the time-dependent damage of the specimens. For comparison, cavitation erosion in deionized water was investigated. The results show that the mass loss of leaded brass in seawater is much lower than that in deionized water, and the trend is distinct after 45 min of cavitation erosion. Four characteristic stages of ultrasonic cavitation erosion are evidenced in seawater. In deionized water, only the acceleration stage is recognizable. The effect of cavitation erosion proves to be more significant than that of corrosion for the surface damage. In seawater, cavitation erosion is delayed by the protective passivation film with the main constituent of Cu 2 O, which is generated and disintegrated repeatedly. The corresponding surface roughness is low. In deionized water, the specimen surface is rapidly damaged under the exclusive effect of cavitation erosion.

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“…In addition, there is formation of a compact and uniform layer over the entire surface of the sample, approximately 1μm thick, which allows us to conclude that the sealant layer is composed of SiO2, as evidenced in the XRD results. It is common for nanoceramic sealants to have low coating layer thickness, usually in the order of nanometers, and good properties of wear resistance, hydrophobicity, chemical resistance, durability and UV protection [20,21].…”

Section: Microstructure Characterization Evaluation Of Layer Adhesion...mentioning

confidence: 99%

Micro-Scale Abrasive Wear Resistance of a Nanoceramic Sealant Applied on Galvanized Low Carbon Steel

Krelling,

Jeronimo,

Bonetti

et al. 2024

Tribol. Ind.

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The idea for this work came from a market need to obtain coatings or sealants that would extend the useful life of metallic materials in applications that involve exposure to corrosive environments. The main objective of the nanoceramic sealant studied in this work is to extend the life of metallic fasteners. To evaluate the performance of the sealant from other perspectives, microstructural analysis, adhesion test, micro-scale abrasive wear tests and corrosion test were carried out. These tests were performed on samples coated only with white zinc, which is commonly used in the fastener industry, and on samples coated with white zinc followed by application of the nanoceramic sealant. The application of the nanoceramic sealant contributed to the improvement of corrosion resistance and reduction of the corrosion rate. The corrosion rate of the sample coated with the sealant reduced by 62.2% when compared to the sample that only went through the white zinc coating process. The coating showed low adhesion to the substrate with the presence of severe delamination and microcracks. This feature contributed to the low wear resistance presented by the coating under the conditions studied in this work. Less attention, compared to studies involving corrosion resistance, has been given to wear resistance in the fastener industry. The results obtained in this paper show that the study of tribological behavior is an important factor in increasing the efficiency of fasteners applied in harsh environments.

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The influence of semiconducting properties of passive films on the cavitation erosion resistance of a NbN nanoceramic coating

Cited by 23 publications

References 60 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

Synergetic Effect of Corrosion and Ultrasonic Cavitation Erosion on Leaded Brass

Micro-Scale Abrasive Wear Resistance of a Nanoceramic Sealant Applied on Galvanized Low Carbon Steel

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