On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content
Graphite/Cu composite is widely used in pantograph slide plates. To further understand its lubrication behaviors, the tribological properties of graphite/Cu composites with different graphite content were studied using ball-on-disk wear tests. The results reveal that the composites contain only grap...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423011882 |
| _version_ | 1797745296653942784 |
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| author | Hengqing Li Yangzhen Liu Baochao Zheng Shuai Wang Yanliang Yi Yongzhen Zhang Wei Li |
| author_facet | Hengqing Li Yangzhen Liu Baochao Zheng Shuai Wang Yanliang Yi Yongzhen Zhang Wei Li |
| author_sort | Hengqing Li |
| collection | DOAJ |
| description | Graphite/Cu composite is widely used in pantograph slide plates. To further understand its lubrication behaviors, the tribological properties of graphite/Cu composites with different graphite content were studied using ball-on-disk wear tests. The results reveal that the composites contain only graphite and Cu phases. The tribological results show that the friction coefficient and wear rate of 7 wt.% graphite/Cu composite were decreased 7.7% and 12.7%, respectively, compared with 5 wt.% graphite/Cu. However, both friction coefficient and wear rate increased with the graphite content exceeding 7 wt.%. The excellent tribological properties of the composites were mainly attributed to the synergistic action of the oxidative trib o-layer and graphite lubricant film, which is composed of graphite, Cu, CuO, and Fe2O3. The wear mechanism of the graphite/Cu composites was mainly abrasive wear, accompanied by adhesion and oxidation wear. |
| first_indexed | 2024-03-12T15:21:18Z |
| format | Article |
| id | doaj.art-e6bb2ee0f7734f08a125e37c6e4923f1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:21:18Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e6bb2ee0f7734f08a125e37c6e4923f12023-08-11T05:32:55ZengElsevierJournal of Materials Research and Technology2238-78542023-07-01258394On the tribological behaviors of Cu matrix composites with different Cu-coated graphite contentHengqing Li0Yangzhen Liu1Baochao Zheng2Shuai Wang3Yanliang Yi4Yongzhen Zhang5Wei Li6Institute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, PR ChinaInstitute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, PR China; Shaoguan Research Institute of Jinan University, 168 Muxi Avenue, Shaoguan, Guangdong, 512027, PR China; National United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang, Henan, 471023, PR China; Corresponding author.Institute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, PR ChinaNational United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang, Henan, 471023, PR ChinaInstitute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, PR ChinaNational United Engineering Laboratory for Advanced Bearing Tribology, Henan University of Science and Technology, Luoyang, Henan, 471023, PR ChinaInstitute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, PR China; Corresponding author.Graphite/Cu composite is widely used in pantograph slide plates. To further understand its lubrication behaviors, the tribological properties of graphite/Cu composites with different graphite content were studied using ball-on-disk wear tests. The results reveal that the composites contain only graphite and Cu phases. The tribological results show that the friction coefficient and wear rate of 7 wt.% graphite/Cu composite were decreased 7.7% and 12.7%, respectively, compared with 5 wt.% graphite/Cu. However, both friction coefficient and wear rate increased with the graphite content exceeding 7 wt.%. The excellent tribological properties of the composites were mainly attributed to the synergistic action of the oxidative trib o-layer and graphite lubricant film, which is composed of graphite, Cu, CuO, and Fe2O3. The wear mechanism of the graphite/Cu composites was mainly abrasive wear, accompanied by adhesion and oxidation wear.http://www.sciencedirect.com/science/article/pii/S2238785423011882Graphite/Cu compositesWear mechanismsTribological propertiesWorn surfaces |
| spellingShingle | Hengqing Li Yangzhen Liu Baochao Zheng Shuai Wang Yanliang Yi Yongzhen Zhang Wei Li On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content Journal of Materials Research and Technology Graphite/Cu composites Wear mechanisms Tribological properties Worn surfaces |
| title | On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content |
| title_full | On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content |
| title_fullStr | On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content |
| title_full_unstemmed | On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content |
| title_short | On the tribological behaviors of Cu matrix composites with different Cu-coated graphite content |
| title_sort | on the tribological behaviors of cu matrix composites with different cu coated graphite content |
| topic | Graphite/Cu composites Wear mechanisms Tribological properties Worn surfaces |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423011882 |
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