The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials
In response to the need to optimize the performance of copper–graphite current-carrying friction materials, spark plasma sintering (SPS) technology was used to prepare copper–graphite composite materials with different graphite orientations. A self-made current-carrying friction testing machine was...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-05-01
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| Series: | Lubricants |
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| Online Access: | https://www.mdpi.com/2075-4442/13/6/238 |
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| author | Zhenghai Yang Wenbo Li Yingjian Song Xiaomeng Zheng Yongzhen Zhang |
| author_facet | Zhenghai Yang Wenbo Li Yingjian Song Xiaomeng Zheng Yongzhen Zhang |
| author_sort | Zhenghai Yang |
| collection | DOAJ |
| description | In response to the need to optimize the performance of copper–graphite current-carrying friction materials, spark plasma sintering (SPS) technology was used to prepare copper–graphite composite materials with different graphite orientations. A self-made current-carrying friction testing machine was used to study the effect of graphite orientation on the current-carrying friction performance of copper–graphite composites. The results showed that as the graphite orientation increased, the current-carrying friction performance of the copper–graphite composites initially improved and then deteriorated. The performance was optimal when the graphite orientation of the 7.5 wt% graphite–copper composite was 90°, primarily constrained by the wear rate. The main wear mechanism was furrowing, and graphite enrichment occurred on the worn surface, where the graphite content on the wear surface was higher than that in the bulk material. The degree of enrichment varied under different wear mechanisms. The graphite content near the entry region of the friction surface was significantly lower than that near the exit region. |
| format | Article |
| id | doaj-art-3a92e95439174f708e92378170cd6c8d |
| institution | Kabale University |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-3a92e95439174f708e92378170cd6c8d2025-08-20T03:27:37ZengMDPI AGLubricants2075-44422025-05-0113623810.3390/lubricants13060238The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite MaterialsZhenghai Yang0Wenbo Li1Yingjian Song2Xiaomeng Zheng3Yongzhen Zhang4School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, ChinaIn response to the need to optimize the performance of copper–graphite current-carrying friction materials, spark plasma sintering (SPS) technology was used to prepare copper–graphite composite materials with different graphite orientations. A self-made current-carrying friction testing machine was used to study the effect of graphite orientation on the current-carrying friction performance of copper–graphite composites. The results showed that as the graphite orientation increased, the current-carrying friction performance of the copper–graphite composites initially improved and then deteriorated. The performance was optimal when the graphite orientation of the 7.5 wt% graphite–copper composite was 90°, primarily constrained by the wear rate. The main wear mechanism was furrowing, and graphite enrichment occurred on the worn surface, where the graphite content on the wear surface was higher than that in the bulk material. The degree of enrichment varied under different wear mechanisms. The graphite content near the entry region of the friction surface was significantly lower than that near the exit region.https://www.mdpi.com/2075-4442/13/6/238copper–graphite compositescurrent-carrying frictiongraphite orientationgraphite enrichment |
| spellingShingle | Zhenghai Yang Wenbo Li Yingjian Song Xiaomeng Zheng Yongzhen Zhang The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials Lubricants copper–graphite composites current-carrying friction graphite orientation graphite enrichment |
| title | The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials |
| title_full | The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials |
| title_fullStr | The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials |
| title_full_unstemmed | The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials |
| title_short | The Influence of Graphite Orientation on the Current-Carrying Friction Performance of Copper–Graphite Composite Materials |
| title_sort | influence of graphite orientation on the current carrying friction performance of copper graphite composite materials |
| topic | copper–graphite composites current-carrying friction graphite orientation graphite enrichment |
| url | https://www.mdpi.com/2075-4442/13/6/238 |
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