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Tribosynthesis of friction films and their influence on the functional properties of copper-based antifriction composites for printing machines

Kayode Olaleye
Kayode Olaleye
, 
Tetiana Roik
Tetiana Roik
, 
Adam Kurzawa
Adam Kurzawa
, 
Oleg Gavrysh
Oleg Gavrysh
, 
Dariusz Pyka
Dariusz Pyka
, 
Mirosław Bocian
Mirosław Bocian
 et 
Krzysztof Jamroziak
Krzysztof Jamroziak
   | 02 mai 2023
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Publié en ligne: 02 mai 2023
Pages: 147 - 157
Reçu: 09 févr. 2023
Accepté: 18 mars 2023
DOI: https://doi.org/10.2478/msp-2022-0051
Mots clés
© 2023 Kayode Olaleye et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Technological scheme for manufacturing copper-based antifriction composites
Technological scheme for manufacturing copper-based antifriction composites

Fig. 2

Schematic setup of VMT-1 friction testing machine
Schematic setup of VMT-1 friction testing machine

Fig. 3

Structure of Cu-5%Ni-3%Mo-9%CaF2 composite: (A) optical metallography; (B) electron microscopic image
Structure of Cu-5%Ni-3%Mo-9%CaF2 composite: (A) optical metallography; (B) electron microscopic image

Fig. 4

Antifriction film on friction surfaces: (A) examined composite Cu+5%Ni+3%Mo+9%CaF2; (B) counterface of 40Kh steel (analog of 1.7045, 42Cr4 steel, DIN standard, Germany)
Antifriction film on friction surfaces: (A) examined composite Cu+5%Ni+3%Mo+9%CaF2; (B) counterface of 40Kh steel (analog of 1.7045, 42Cr4 steel, DIN standard, Germany)

Fig. 5

Antifriction film with places for micro-X-ray spectral analysis (spectra 1, 2, and 3)
Antifriction film with places for micro-X-ray spectral analysis (spectra 1, 2, and 3)

Fig. 6

Micro-X-ray spectral analysis of film sections
Micro-X-ray spectral analysis of film sections

Fig. 7

Deformation and wear process of the antifriction film area: (A) beginning of deformation; (B) forming a crest before peeling off the area
Deformation and wear process of the antifriction film area: (A) beginning of deformation; (B) forming a crest before peeling off the area

Fig. 8

Wear of the film section: (A) peeling; (B) crushing and dispersion
Wear of the film section: (A) peeling; (B) crushing and dispersion

Chemical composition of spectrum 2

Element Intensity Weight% Weight%, σ Atomic%
CK 3.1867 49.38 0.57 77.22
OK 0.5512 5.61 0.29 7.44
FK 0.4215 1.02 0.22 1.03
PK 0.9402 0.06 0.04 0.04
SK 0.7728 0.53 0.12 0.23
CaK 1.2703 1.03 0.07 0.52
FeK 0.9234 0.98 0.11 0.31
NiK 0.7966 2.74 0.14 0.91
CuK 0.8837 35.27 0.52 11.68
MoL 0.6979 3.38 0.29 0.62
Result 100.00 100.00

Chemical composition of spectrum 3

Element Intensity Weight% Weight%, σ Atomic%
CK 4.7439 67.59 0.57 89.30
OK 0.4207 3.78 0.34 3.71
FK 0.3612 0.63 0.27 0.53
SK 0.8711 0.36 0.09 0.13
CaK 1.0372 1.56 0.08 0.58
CrK 0.9261 0.38 0.06 0.05
FeK 0.8968 0.44 0.06 0.11
NiK 0.8198 1.54 0.12 0.38
CuK 0.8246 21.59 0.40 4.99
MoL 0.7734 2.13 0.22 0.22
Result 100.00 100.00

Comparative antifriction properties of the studied composite and cast bronze

Composition, wt.% Friction coefficient (f)/wear rate (I), μm/km, at load of 4.0 MPa and rotation speed, rph Maximum permissible rotation speed, rph Comments
3,000 5,000 7,000
Cu + 5Ni + 3Mo + 9CaF2 0.21/61 0.24/75 0.28/153 7,500 Antifriction films have formed on the contact surfaces
Cast bronze CuSn5ZnPb* [1] 0.37–0.41/388–405 Plastic deformation 800–1,000 Liquid oil smokes and burns

Chemical composition of spectrum 1

Element Intensity Weight% Weight%, σ Atomic%
CK 2.0816 12.57 0.71 39.81
OK 0.7860 4.71 0.25 9.91
FK 0.5422 1.82 0.25 3.54
SK 0.8207 0.23 0.22 0.31
CaK 1.0503 1.47 0.09 1.35
FeK 1.1168 0.47 0.11 0.30
NiK 0.9799 4.58 0.22 2.80
CuK 0.9441 66.84 0.80 39.23
MoL 0.6776 7.31 0.64 2.75
Result 100.00 100.00
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