Cavitation erosion of materials

Karimi, A.; Martin, J.L.

doi:10.1179/imr.1986.31.1.1

Cited by 196 publications

(39 citation statements)

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“…General behaviour of the curve on Fig. 13 (right) is in a good agreement with previously reported data [22] Fig. 14.…”

Section: Influence Of Fluid Temperature On Erosionsupporting

confidence: 90%

“…This time period is called the incubation time, and it is increased as the ratio of cavitation intensity to cavitation resistance decreases. However, there are no quantitative data on this relationship [2,8,22,[25][26][27].…”

Section: Cavitation Erosion Parameters and Erosion Quantificationmentioning

confidence: 99%

“…Consequently, the results of erosion tests are and will remain a subject to a large scatter. A statistical approach, based on realistic but simplified physical model, is to improve confidence in the damage prediction [9,11,13,15,22,25,29,31,33]. The main reason for using a cavitating jet in this work was to test the material resistance to cavitation erosion.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, an exact solution by either analytical or experimental methods is out of reach for a long time. A number of these parameters are extremely difficult to quantify [1][2][3][5][6][7][8]10,13,[16][17][18][19][22][23][24][25][26][27]. Consequently, the results of erosion tests are and will remain a subject to a large scatter.…”

Section: Introductionmentioning

confidence: 99%

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Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion

2007

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Experimental setup with a submerged cavitating jet has been used for the study of influences of material, exposure time and working fluid temperature on the erosion process. Each of the parameters has been varied separately, and the results of erosion are analyzed in detail. Additionally, comparison of experiments with nitrated and non-nitrated material has been made in order to study the enhancement (mostly reflected as the prolonged incubation time) of erosion resistance achieved by nitrating the specimen surface. List of symbols σ cavitation number-defined as σ = p ref − p v 1 2 ρ×u 2 ref p ref reference (downstream) pressure (bar) p v (T ) saturation (vapour) pressure (bar) ρ L (T ) density of the liquid (kg/m 3 ) T temperature ( • C) L stand-off distance (mm) A nozzle outlet cross-section area (m 2 ) D in inlet nozzle diameter (mm) u ref reference velocity − exit jet velocity (m/s) = Q/A = V j p 1 upstream pressure (bar) (absolute) p 2 downstream pressure (bar) (absolute) W weight loss (mg), ρ m density of the eroding material (kg/m 3 ), t exposure time (h, s) Q K× √ ( p 1 − p 2 ) flow rate (m 3 /s) K constant = 4.78E-09 for divergent; (m 3 /s/Pa 1/2 ) = 6.17E-09 for convergent nozzle D out outlet nozzle diameter (mm)

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“…General behaviour of the curve on Fig. 13 (right) is in a good agreement with previously reported data [22] Fig. 14.…”

Section: Influence Of Fluid Temperature On Erosionsupporting

confidence: 90%

Section: Cavitation Erosion Parameters and Erosion Quantificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion

2007

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“…Cavitation erosion, often reported as a common phenomenon in the overflowing components of hydraulic machinery, is related to two main aspects of hydrodynamic and material [1,2]. On the one hand, hydrodynamic cavitation takes place when vapor bubbles in a liquid are exposed to a sudden fluctuation of localized pressure, which can cause repeated nucleation, growth, violent collapse of bubbles, and send micro-jet or shock wave through the liquid to the solid surfaces [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

et al. 2017

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Abstract:The arc spraying process was used to prepare Fe-based amorphous/nanocrystalline coating. The cavitation erosion behaviors of FeNiCrBSiNbW coatings with different surface roughness levels were investigated in distilled water. The results showed that FeNiCrBSiNbW coating adhered well to the substrate, and was compact with porosity of less than 2%. With increasing initial surface roughness, the coatings showed an increase in mass loss of cavitation erosion damage. The amount of pre-existing defects on the initial surface of the coatings was found to be a significant factor for the difference in the cavitation erosion behavior. The cavitation erosion damage for the coatings was a brittle erosion mode. The evolution of the cavitation erosion mechanism of the coatings with the increase of the initial surface roughness was micro-cracks, pits, detachment of fragments, craters, cracks, pullout of the un-melted particle, and massive exfoliations.

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How the Physicochemical Properties of the Bulk Material Affect the Ablation Crater Profile, Mass Balance, and Bubble Dynamics During Single‐Pulse, Nanosecond Laser Ablation in Water

Kalus

Barcikowski

Gökce

2021

Chemistry A European J

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Understanding the key steps that drive the laser‐based synthesis of colloids is a prerequisite for learning how to optimize the ablation process in terms of nanoparticle output and functional design of the nanomaterials. Even though many studies focus on cavitation bubble formation using single‐pulse ablation conditions, the ablation efficiency and nanoparticle properties are typically investigated under prolonged ablation conditions with repetition rate lasers. Linking single‐pulse and multiple‐pulse ablation is difficult due to limitations induced by gas formation cross‐effects, which occur on longer timescales and depend on the target materials’ oxidation‐sensitivity. Therefore, this study investigates the ablation and cavitation bubble dynamics under nanosecond, single laser pulse conditions for six different bulk materials (Au, Ag, Cu, Fe, Ti, and Al). Also, the effective threshold fluences, ablation volumes, and penetration depths are quantified for these materials. The thermal and chemical properties of the corresponding bulk materials not only favor the formation of larger spot sizes but also lead to the highest molar ablation efficiencies for low melting materials such as aluminum. Furthermore, the concept of the cavitation bubble growth linked with the oxidation sensitivity of the ablated material is discussed. With this, evidence is provided that intensive chemical reactions occurring during the very early timescale of ablation are significantly enhanced by the bubble collapse.

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Cavitation erosion of materials

Cited by 196 publications

References 0 publications

Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion

Mechanics of submerged jet cavitating action: material properties, exposure time and temperature effects on erosion

Effect of Initial Surface Roughness on Cavitation Erosion Resistance of Arc-Sprayed Fe-Based Amorphous/Nanocrystalline Coatings

How the Physicochemical Properties of the Bulk Material Affect the Ablation Crater Profile, Mass Balance, and Bubble Dynamics During Single‐Pulse, Nanosecond Laser Ablation in Water

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