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Effect of Concentration of Clad Graphite Particles on Tribological Properties of Cold-Sprayed Copper-Matrix Coatings.

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Title: Effect of Concentration of Clad Graphite Particles on Tribological Properties of Cold-Sprayed Copper-Matrix Coatings.
Authors: Shikalov, V. S.1 (AUTHOR) v.shikalov@gmail.com, Lushov, A. A.1 (AUTHOR), Vidyuk, T. M.1 (AUTHOR)
Source: Metal Science & Heat Treatment. May2025, Vol. 67 Issue 1/2, p82-88. 7p.
Subjects: Hardness, Graphite composites, Friction velocity, Surface coatings, Abrasion resistance, Mechanical wear, Metal spraying
Abstract: The structure and tribological properties of self-lubricating Cu – NiP – C coatings deposited on copper substrates by high-pressure cold gas-dynamic spraying are investigated. The coatings are obtained by spraying mixtures of copper and clad graphite powders in an amount of 20, 30 and 40 wt.%. The incorporation of clad particles leads to formation of a lamellar structure and microdefects along the inter-splat boundaries of the copper matrix. Increase in the content of clad particles in the coating causes monotonic growth in its hardness due to shot peening and increases the content of the NiP alloy. Despite the reduction of the coefficient of friction, the wear rate of the composite coatings increases as compared to the pure copper coating. With the increase in the content of clad graphite, the wear mechanism changes from oxidative wear and plastic deformation to delamination and then to abrasive wear. [ABSTRACT FROM AUTHOR]
Copyright of Metal Science & Heat Treatment is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of Concentration of Clad Graphite Particles on Tribological Properties of Cold-Sprayed Copper-Matrix Coatings.
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  Data: The structure and tribological properties of self-lubricating Cu – NiP – C coatings deposited on copper substrates by high-pressure cold gas-dynamic spraying are investigated. The coatings are obtained by spraying mixtures of copper and clad graphite powders in an amount of 20, 30 and 40 wt.%. The incorporation of clad particles leads to formation of a lamellar structure and microdefects along the inter-splat boundaries of the copper matrix. Increase in the content of clad particles in the coating causes monotonic growth in its hardness due to shot peening and increases the content of the NiP alloy. Despite the reduction of the coefficient of friction, the wear rate of the composite coatings increases as compared to the pure copper coating. With the increase in the content of clad graphite, the wear mechanism changes from oxidative wear and plastic deformation to delamination and then to abrasive wear. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Metal Science & Heat Treatment is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11041-025-01132-7
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        Text: English
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      – SubjectFull: Friction velocity
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      – SubjectFull: Surface coatings
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      – SubjectFull: Abrasion resistance
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      – SubjectFull: Mechanical wear
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      – TitleFull: Effect of Concentration of Clad Graphite Particles on Tribological Properties of Cold-Sprayed Copper-Matrix Coatings.
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              Text: May2025
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