Melting at particle impact sites during erosion of ceramics

Yust, C.S.; Crouse, R.S.

doi:10.1016/0043-1648(78)90066-2

Cited by 45 publications

(7 citation statements)

References 3 publications

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“…Particle velocity also has a key role in the erosion process. When the velocities are high, the eroded material may be plastically deformed, but if the particles are sharp, then other erosion mechanisms such as cutting and brittle fragmentation are more likely to occur [44]. The eroded surface under the optimal condition of erosion rate is illustrated in Figure 8a,b.…”

Section: Worn Surface Analysismentioning

confidence: 99%

Modeling of Erosion Response of Cold-Sprayed In718-Ni Composite Coating Using Full Factorial Design

et al. 2020

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In this work, the cold-spray technique was used to deposit Inconel 718–nickel (1:1) composite coatings on stainless steel substrate. A general full factorial design was adopted to identify the statistically significant operating variables, i.e., impingement angle, erodent size, and feed rate on the coating erosion response. Erodent feed rate, impingement angle, and the interaction between impingement angle and erodent size were identified as the highly significant variables on the erosion rate. Then, a model correlating the identified variables with the erosion rate was derived. The best combination of control variables for minimum erosion loss with respect to erodent feed rate, erodent size, and impingement angle was 2 mg/min, 60 μm, and 90°, respectively. To analyze the erosion mechanism, the erodent samples were finally observed using Scanning Electron Microscope (SEM).

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Section: Worn Surface Analysismentioning

confidence: 99%

Modeling of Erosion Response of Cold-Sprayed In718-Ni Composite Coating Using Full Factorial Design

et al. 2020

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“…At very high particle speeds melting of the impacted surface might even occur [59]. If the speed is very low then stresses at impact are insufficient for plastic deformation to occur and wear proceeds by surface fatigue.…”

Section: Mechanisms Of Erosive Wearmentioning

confidence: 99%

Abrasive, Erosive and Cavitation Wear

2014

Engineering Tribology

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“…(Incubation effects occur also in borosilicate glass under elastic impact conditions [ 103 ], and a theory has been proposed to explain them [104,105] .) Indirect evidence for the occurrence of melting during impact continues to accumulate from studies on alumina and mullite refractories [107], A12Oa and silicate glasses [108], and metallic glasses [109]. Significant, but as yet unexplained, effects of microstructure are also apparent in the different dependencies of mass loss on particle size and impact velocity observed in hot-pressed and reaction-bonded Si 3 N4, glass-bonded A12 Oa and hot-pressed MgF 2 [93].…”

Section: Introductionmentioning

confidence: 99%

Erosion of MgO by solid particle impingement at normal incidence

Rickerby

Macmillan

1981

J Mater Sci

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A study has been made of the erosion of almost fully dense, fine-grained MgO by millimeter-scale WC-6 wt% Co spheres impinging at normal incidence with velocities between 10 and 90 m sec -1. Scanning electron microscopy showed that the damage consisted of a central crater surrounded by an array of intergranular radial and/or median and/or lateral cracks characteristic of an elastic-plastic impact. The crater had a thin lining of plastically deformed material, but appeared to have been formed primarily by localized transgranular and integranular fracture processes, suggesting that any mode of irreversible deformation in the contact region will suffice to produce the changeover from Hertzian cracking to radial, median and lateral cracking. The accompanying gravimetric studies showed that mass loss, which was caused primarily by intersection of lateral cracks with the free surface and with radial and/or median cracks, increased threefold during the short incubation period in which the as-received surface evolved into its steady-state eroded condition. During this period the exponent relating erosion to impact velocity decreased asymptotically towards a value smaller than that predicted by any current theory of erosion in the elastic or the elastic-plastic impact regime. Nor are these theories any more successful at explaining the observed particle-size dependence of the erosion of polycrystalline MgO.

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Melting at particle impact sites during erosion of ceramics

Cited by 45 publications

References 3 publications

Modeling of Erosion Response of Cold-Sprayed In718-Ni Composite Coating Using Full Factorial Design

Modeling of Erosion Response of Cold-Sprayed In718-Ni Composite Coating Using Full Factorial Design

Abrasive, Erosive and Cavitation Wear

Erosion of MgO by solid particle impingement at normal incidence

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