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Effect of lead and molybdenum disulfide additives on wear resistance and physical properties of copper–graphite composite Cover

Effect of lead and molybdenum disulfide additives on wear resistance and physical properties of copper–graphite composite

Materials Science-Poland
Volume 42 (2024): Issue 4 (December 2024)
By: Maryam Hosseini,  Amir Reza Mashtizadeh,  Arvin Taghizadeh Tabrizi and  Hossein Aghajani  
Open Access
|Dec 2024

Figures & Tables

Figure 1

DTA of powder samples before sintering.
DTA of powder samples before sintering.

Figure 2

(a) Variation of the measured porosities, (b) Pb wt%, (c) MoS2 (wt%), and (d) Graphite (wt%).
(a) Variation of the measured porosities, (b) Pb wt%, (c) MoS2 (wt%), and (d) Graphite (wt%).

Figure 3

Variation of the obtained density. (a) Theoretical, (b) Pb (wt%), (c) MoS2 (wt%), and (d) Graphite (wt%).
Variation of the obtained density. (a) Theoretical, (b) Pb (wt%), (c) MoS2 (wt%), and (d) Graphite (wt%).

Figure 4

(a) Variation of the achieved hardness of synthesized samples, (b) Pb (wt%), (c) MoS2 (wt%), and (d) Graphite (wt%).
(a) Variation of the achieved hardness of synthesized samples, (b) Pb (wt%), (c) MoS2 (wt%), and (d) Graphite (wt%).

Figure 5

SEM image of sample M4P5 after sintering.
SEM image of sample M4P5 after sintering.

Figure 6

SEM image of sample M4.5P4.5 after sintering.
SEM image of sample M4.5P4.5 after sintering.

Figure 7

SEM image of sample M5P4 after sintering.
SEM image of sample M5P4 after sintering.

Figure 8

Variation of the COF and wear trace of samples: (a) M4P5, (b) M4.5P4.5, and (c) M5P4.
Variation of the COF and wear trace of samples: (a) M4P5, (b) M4.5P4.5, and (c) M5P4.

Figure 9

EDS map of sample M4.5P5.5.
EDS map of sample M4.5P5.5.

Figure 10

EDS map of sample M5P4.
EDS map of sample M5P4.

Figure 11

EDS map of sample M4P5.
EDS map of sample M4P5.

Physicochemical characteristics of raw material_

MaterialsPurity (%)Powder size (µm)Melting point (°C)Density (g/cm3)
Gr95<203,6000.4
MoS2 98<22,3755.06
Pb957532611.3 (20°C)

Measured results of the applied pin-on-disk wear tests on Cu–Gr–Pb–MoS2 nanocomposites_

SampleWeight loss (mg)COF value
M4P4370.44
M4P4.5360.43
M4P5360.39
M4.5P4380.41
M4.5P4.5390.40
M4.5P5410.39
M5P4420.42
M5P4.5420.42
M5P5430.41
Average39.330.412

Chemical composition of each synthesized sample_

Sample codeCu (wt%)G (wt%)MoS2 (wt%)Pb (wt%)
M4P46327–28 Balanced44
M4P4.54.5
M4P55
M4.5P44.54
M4.5P4.54.5
M4.5P55
M5P454
M5P4.54.5
M5P55
DOI: https://doi.org/10.2478/msp-2024-0046 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
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Language: English
Page range: 148 - 161
Submitted on: Jun 19, 2024
|
Accepted on: Nov 18, 2024
|
Published on: Dec 31, 2024
Published by: Wroclaw University of Science and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Molybdenum disulfide,
Lead,
Copper–graphite composite,
Mechanical alloying,
Wear resistance
Related subjects:
Materials sciences,
Materials sciences, other,
Nanomaterials,
Functional and smart materials,
Materials characterization and properties

© 2024 Maryam Hosseini, Amir Reza Mashtizadeh, Arvin Taghizadeh Tabrizi, Hossein Aghajani, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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