Friction and wear properties of high temperature and low temperature sintered copper-graphite brushes at different ambient temperatures
In this paper, two resin-filled copp-graphite brushes were prepared at the sintering temperature of 450°C and 910°C respectively. The friction and wear mechanism of the brushes during the current-carrying friction process at different ambient temperatures were discussed. The results show that the fr...
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| Published in | Journal of materials research and technology Vol. 9; no. 4; pp. 7288 - 7296 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
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Elsevier B.V
01.07.2020
Elsevier |
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| Abstract | In this paper, two resin-filled copp-graphite brushes were prepared at the sintering temperature of 450°C and 910°C respectively. The friction and wear mechanism of the brushes during the current-carrying friction process at different ambient temperatures were discussed. The results show that the friction stability decreases with the increase of the ambient temperature, the friction and wear mechanism changes continuously. Compared with 450°C sintered brush, 910°C sintered brush has larger pore size and higher porosity. At high temperature condition, the cumulative oxidative wear is obvious, resulting severe wear of the brushes and commutators. The low-temperature brush has low porosity, high-temperature oxidation resistance. It shows good friction and wear performance under high ambient temperature. |
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| AbstractList | In this paper, two resin-filled copp-graphite brushes were prepared at the sintering temperature of 450°C and 910°C respectively. The friction and wear mechanism of the brushes during the current-carrying friction process at different ambient temperatures were discussed. The results show that the friction stability decreases with the increase of the ambient temperature, the friction and wear mechanism changes continuously. Compared with 450°C sintered brush, 910°C sintered brush has larger pore size and higher porosity. At high temperature condition, the cumulative oxidative wear is obvious, resulting severe wear of the brushes and commutators. The low-temperature brush has low porosity, high-temperature oxidation resistance. It shows good friction and wear performance under high ambient temperature. |
| Author | Lin, Xueyang Liu, Rutie Xiong, Xiang Chen, Jie Cheng, Kai |
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| CitedBy_id | crossref_primary_10_1016_j_jmrt_2022_05_192 crossref_primary_10_1016_j_triboint_2024_109635 crossref_primary_10_1016_j_engfailanal_2022_106698 crossref_primary_10_1016_j_jmrt_2021_02_094 crossref_primary_10_1007_s11249_024_01856_2 crossref_primary_10_1021_acsomega_2c01276 crossref_primary_10_1108_ILT_03_2024_0098 crossref_primary_10_1007_s11249_023_01825_1 crossref_primary_10_1016_j_engfailanal_2022_106205 crossref_primary_10_1016_j_jmrt_2021_09_111 crossref_primary_10_3390_lubricants10010002 crossref_primary_10_1016_j_jmrt_2021_11_053 crossref_primary_10_1115_1_4054233 crossref_primary_10_3390_en16031294 crossref_primary_10_1115_1_4056630 crossref_primary_10_1016_j_ijmecsci_2023_108133 |
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| Title | Friction and wear properties of high temperature and low temperature sintered copper-graphite brushes at different ambient temperatures |
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