Dry sliding wear behaviour of multi walled carbon nanotubes reinforced aluminium composites produced by powder metallurgy technique

Shivaramu, H T; Umashankar, K S

doi:10.1088/2053-1591/ab501f

Cited by 8 publications

(4 citation statements)

References 28 publications

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“…However, dislocation of the particles reduced and strain hardening took place during plastic elongation [11]. With further addition in reinforcement concentration, hardness was found to decrease [12,13]. In the present study, the least hardness was obtained with 1.0 wt% MWCNTs in the LM6 matrix.…”

Section: Resultsmentioning

confidence: 42%

“…The one end of CNTs are at the surface while the other within the matrix, the uncovered CNTs behaves like a solid lubricant between the nanocomposites and counter surface, so the wear is minimum because of friction reduction. The existence of MWCNTs at the boundaries of particle resist the growth of crack and bridges the grain boundaries, it acts as a barricade for the material wear is shown in figure 14(h) [13,23]. The wettability of MWCNTs and Al-Si alloy matrix is good so it reduces the wear [5].…”

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

“…However, there was an increase in the wear rate with 1.0 wt% MWCNTs reinforcement as seen from figure 7. Furthermore, it was noticed that the wear rate decreased with the increasing sliding disc speed with increased magnitude load and at a given constant sliding distance [4,[12][13][14][15][16][17]. The higher hardness material is worn more compared to the lower one.…”

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

“…The formation of oxide taken place with a raise in temperature with an increase in sliding duration [18,[22][23][24][25][26][27][28][29]. The plain and smooth wear tracks can observe in nanocomposites shown in figures 14(b) to (e), the MWCNTs reinforcement minimizes the adhesion and plough wear in comparison to LM6 [4,13].…”

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

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Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

Shivaramu¹,

U²,

Umashankar³

2020

Mater. Res. Express

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The present work involved the production of Metal Matrix Composites (MMCs) of Aluminium Silicon (Al-Si) alloy reinforced with Multi Walled Carbon Nano Tubes (MWCNTs) using Powder Metallurgy (PM) process. MWCNTs with concentrations of 0, 0.25, 0.5, 0.75 and 1.0 wt% were used. Validation of dispersion nature, existence and chemically stable of MWCNTs carried out using Transmission Electron Microscope (TEM), X-ray Diffractometer (XRD) and Energy Dispersive Spectrum (EDS) for fabricated composites. Sliding wear investigations were investigated in accordance with the ASTM G99-95a standard. Test variables such as sliding distance, load and speed were examined. Under a given load with sliding distance, the wear rate was found to reduce by varying disc rotation speed between 250 to 750 rpm. The rate of wear is dropped suddenly with the increment in sliding distance from 500 m to 1000 m. However, for 1500 m sliding distance, the wear rate increased linearly for all nanocomposites. The reinforcement of 0.25 wt% and 0.5 wt% of MWCNTs shown lower wear resistance and further addition of 0.75 wt% MWCNTs shown enhanced wear resistance but the addition of reinforcement of above 0.75 wt% resulted in slightly higher wear rate. The wear resistance enhanced due to the excellent properties of reinforcement particles. The Scanning Electron Microscope (SEM) was used for identifying the kind of wear mechanism.

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Section: Resultsmentioning

confidence: 42%

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

Section: Dry Sliding Wear Experimentsmentioning

confidence: 99%

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Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

Shivaramu¹,

U²,

Umashankar³

2020

Mater. Res. Express

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Friction and Wear Behavior of Al-Graphene Nanocomposite Synthesized by Powder Metallurgy and Hot Extrusion

Haseebuddin,

Keshavamurthy,

Kumar

2023

J. of Materi Eng and Perform

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Effect of Heat Treatment and Reinforcement Content on the Wear Behavior of Al–4Cu/Al2O3–CNT Nanocomposites

Özer,

Ayvaz,

Übeyli

et al. 2024

Arab J Sci Eng

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In the study, the effects of hybrid reinforcement (nano-alumina and MWCNT) and heat treatment on the wear behavior of the Al–4Cu nanocomposites were investigated under dry sliding condition against W–6Co ball by means of a ball-on-disk type tribometer. The load and the sliding speed were kept constant and selected to be 10 N and 0.1 m s−1, respectively, in the course of the wear tests. Meanwhile, the wear tests were completed after a total sliding distance of 1500 m was reached for each case. During these tests, the wear loss of the nanocomposites was measured at every 250 m. The worn surfaces of the nanocomposites were examined with the help of stereo and scanning electron microscopes. The volumetric wear rates, wear coefficients and wear mechanisms were identified for the nanocomposites to clarify the influence of reinforcement content and heat treatment on their wear resistance. The volume loss at the wear distance of 1500 m was obtained as 24.9 and 8.2 mm3 for the annealed and aged Al–4Cu alloy, respectively. On the other hand, it decreased to 4.6 and 3.2 mm3 in the case of the nanocomposites with 15% hybrid reinforcement in the annealed and aged conditions, successively. Moreover, increasing the hybrid reinforcement amount decreased the wear loss of the aged nanocomposites substantially in such a way that it resulted in the mild wear.

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Dry sliding wear behaviour of multi walled carbon nanotubes reinforced aluminium composites produced by powder metallurgy technique

Cited by 8 publications

References 28 publications

Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

Dry sliding wear characteristics of multi-walled carbon nanotubes reinforced Al-Si (LM6) alloy nanocomposites produced by powder metallurgy technique

Friction and Wear Behavior of Al-Graphene Nanocomposite Synthesized by Powder Metallurgy and Hot Extrusion

Effect of Heat Treatment and Reinforcement Content on the Wear Behavior of Al–4Cu/Al2O3–CNT Nanocomposites

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