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Reduced wear damage of carbon brushes via transfer layer upon W/Cu composite
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Number of Authors: 52018 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847, Vol. 34, no 2, p. 172-178Article in journal (Refereed) Published
Abstract [en]

An ultrafine (similar to 100 nm) W particle-reinforced Cu matrix composite was fabricated by spark plasma sintering. The tribological properties of the fabricated W/Cu composite were tested by pin-on-disc sliding experiments and compared with those of brass alloy. The wear rate of the carbon brush when sliding against the W/Cu composite (0.102mm(3) s(-1)) was much lower than that with brass (4.83mm(3) s(-1)). Simultaneously, the W/Cu composite possessed higher conductivities and greater surface hardness than brass. The surface roughness of the W/Cu composite was found to play a critical role in improving the robustness of the tribofilm and reducing the volume loss of the carbon brush. The W/Cu composite has promising engineering applications for the long-term wear protection of self-lubricating materials.

Place, publisher, year, edition, pages
2018. Vol. 34, no 2, p. 172-178
Keywords [en]
Self-lubricant materials, carbon brush, W/Cu composite, ultrafine particles, surface roughness, wear reduction
National Category
Materials Engineering Materials Chemistry
Identifiers
URN: urn:nbn:se:su:diva-153863DOI: 10.1080/02670836.2017.1366711ISI: 000424554400006OAI: oai:DiVA.org:su-153863DiVA, id: diva2:1188723
Available from: 2018-03-08 Created: 2018-03-08 Last updated: 2018-03-08Bibliographically approved

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Shen, Zhijian
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Department of Materials and Environmental Chemistry (MMK)
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