Scratching an Al/Si Interface: Molecular Dynamics Study of a Composite Material

Zhang, Zhibo; Alhafez, Iyad Alabd; Urbassek, Herbert M.

doi:10.1007/s11249-018-1038-6

Cited by 18 publications

(8 citation statements)

References 49 publications

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“…5,6 In recent years, the MD technique has been used for simulating the nano-deformation/scratching processes. [7][8][9][10][11] It is known that the friction between the sliding surfaces depends on the interaction of asperities and surface topography. 12,13 At smaller or nanoscale, the determination of friction and wear is critical; however, to some extent, MD simulation can be a useful method.…”

Section: Introductionmentioning

confidence: 99%

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Friction and wear study of metallic contacts under dry sliding conditions: A molecular dynamics simulation-based approach

Kumar,

Rajput,

Paul

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Sliding friction originating due to ploughing and adhesive wear significantly affects the performance of small-scale components, that is, nano-electromechanical systems/micro-electromechanical. To get a comprehensive understanding of the friction mechanisms, a comprehensive study of surface interactions at the nanoscale is crucial, particularly when dealing with nano-electromechanical and micro-electromechanical components. This study performed molecular dynamics simulation to explore the interactions between asperities (made of similar/dissimilar materials) at the nanoscale under dry sliding conditions. The research framework focuses on modelling the contact between two hemispherical asperities during dry sliding by considering three material combinations: soft-to-soft (Cu–Cu), hard-to-hard (Fe–Fe), and hard-to-soft (Fe–Cu). The study assesses plastic deformation and atomic wear at specific sliding speeds. Notably, the results indicate that the frictional force on the lower asperity increases as interference increases. Additionally, atomic wear rises with increased interference in the case of the Fe–Cu tribopair. Particularly high atomic wear is observed in the Cu–Cu tribopair due to the ease of slip within the face-centred cubic crystal structure of copper.

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Section: Introductionmentioning

confidence: 99%

“…5,6 In recent years, the MD technique has been used for simulating the nano-deformation/scratching processes. 7–11…”

Section: Introductionmentioning

confidence: 99%

Friction and wear study of metallic contacts under dry sliding conditions: A molecular dynamics simulation-based approach

Kumar,

Rajput,

Paul

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Zhang et al [37] studied the scratching of a composite built from Al and Si through MD simulation. The composite hardness and friction coefficient was found to be averaged of two materials at the interface.…”

Section: Introductionmentioning

confidence: 99%

Tribological Properties of Aluminium Reinforced with Differently Oriented Carbon Nanotube: A Molecular Dynamics Study

Patel

Sharma

Tiwari

2021

Surf. Topogr.: Metrol. Prop.

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Molecular dynamics (MD) simulations have been carried out to envisage the sliding friction response of single-wall carbon nanotube (SWCNT) reinforced aluminum (Al) nanocomposites and pure Al. The simulations have been performed with different sliding velocities (0.02-0.11 Å ps −1 ) using the three-layer model. The effect of carbon nanotube (CNT) reinforcement, CNT orientation, and sliding velocities on the coefficient of friction (COF), abrasion rate, and mean square displacement (MSD) have been predicted. The reinforcement of CNT decreased the COF to 0.06 by 45% and the lowest abrasion rate of 0.093%. The reinforcement of CNT in Al parallel to the sliding direction of the Fe rod indenter was found to be more effective for improvement in the tribological properties as compared to perpendicularly reinforced CNT. The increase in sliding velocity of the indenter increased the COF from 0.06 to 0.08 and decreased the abrasion rate from 0.172% to 0.094% for CNT-Al nanocomposites. The ANOVA at the 95% level of confidence revealed that the effect of sliding velocities (0.02-0.11 Å ps −1 ) of indenter was found to be insignificant for the variation in COF and significant for variation of abrasion rate while the type of reinforcement was found to be significant for both COF as well as for the abrasion rate. The MSD revealed the higher migration of Al atoms from the surface of nanocomposites at higher sliding velocity.

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“…For this reason, a deeper understanding of the effects of scratch damage on plain weave laminates is important for the designing of safer structural materials for the aerospace industry, especially when considering the range of possible service conditions. Recently, several research groups have reported studies regarding the scratch-resistant behavior of composite materials from a tribology perspective, i.e., determining best practices for reducing the wear potential and for protecting the subsurface condition [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Superficial Scratch Damage on Tension Properties of Carbon/Epoxy Plain Weave Laminates

Duan

Yue

Song³

2021

Advances in Civil Engineering

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The effect of scratch damage on the tension properties of carbon fiber plain weave laminates has been studied in detail using digital image correlation (DIC) and acoustic emission (AE). A range of scratch lengths was machined onto different laminates. The bearing capacity of the laminates was then compared with that of unaltered samples. The strain field distributions near the scratches were measured and analyzed as a function of scratch length with DIC. Initiation and propagation of damage were monitored during the tensile tests using AE. Failure sites and morphologies were observed and analyzed. The results show that superficial scratches have little effect on the strength of plain weave laminates when the scratch length is less than 80% of the specimen width. Scratches affect the distribution of strain near the scratch but not far away from the scratch or at the back face of the sample. Not all samples broke from the scratch site but instead broke from the free edge of the sample or close to the gripping region.

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Scratching an Al/Si Interface: Molecular Dynamics Study of a Composite Material

Cited by 18 publications

References 49 publications

Friction and wear study of metallic contacts under dry sliding conditions: A molecular dynamics simulation-based approach

Friction and wear study of metallic contacts under dry sliding conditions: A molecular dynamics simulation-based approach

Tribological Properties of Aluminium Reinforced with Differently Oriented Carbon Nanotube: A Molecular Dynamics Study

Effect of Superficial Scratch Damage on Tension Properties of Carbon/Epoxy Plain Weave Laminates

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