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

Maryam Hosseini

Maryam Hosseini

Materials Engineering Department, University of TabrizTabriz, Iran
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Hosseini, Maryam
, 
Amir Reza Mashtizadeh

Amir Reza Mashtizadeh

Materials Engineering Department, University of TabrizTabriz, Iran
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Mashtizadeh, Amir Reza
, 
Arvin Taghizadeh Tabrizi

Arvin Taghizadeh Tabrizi

School of Metallurgy and Materials Engineering, Iran University of Science and TechnologyTehran, Iran
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Tabrizi, Arvin Taghizadeh
 et 
Hossein Aghajani

Hossein Aghajani

School of Metallurgy and Materials Engineering, Iran University of Science and TechnologyTehran, Iran
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Aghajani, Hossein
  
31 déc. 2024
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Catégorie d'article: Research Article
Publié en ligne: 31 déc. 2024
Pages: 148 - 161
Reçu: 19 juin 2024
Accepté: 18 nov. 2024
DOI: https://doi.org/10.2478/msp-2024-0046
Mots clés
© 2024 Maryam Hosseini et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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_

Materials Purity (%) Powder size (µm) Melting point (°C) Density (g/cm3)
Gr 95 <20 3,600 0.4
MoS2 98 <2 2,375 5.06
Pb 95 75 326 11.3 (20°C)

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

Sample Weight loss (mg) COF value
M4P4 37 0.44
M4P4.5 36 0.43
M4P5 36 0.39
M4.5P4 38 0.41
M4.5P4.5 39 0.40
M4.5P5 41 0.39
M5P4 42 0.42
M5P4.5 42 0.42
M5P5 43 0.41
Average 39.33 0.412

Chemical composition of each synthesized sample_

Sample code Cu (wt%) G (wt%) MoS2 (wt%) Pb (wt%)
M4P4 63 27–28 Balanced 4 4
M4P4.5 4.5
M4P5 5
M4.5P4 4.5 4
M4.5P4.5 4.5
M4.5P5 5
M5P4 5 4
M5P4.5 4.5
M5P5 5
Langue:
Anglais
Périodicité:
4 fois par an
Sujets de la revue:
Sciences des matériaux, Sciences des matériaux, autres, Nanomatériaux, Matériaux fonctionnels et intelligents, Caractérisation et propriétés des matériaux
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