Current-Carrying Friction and Wear Performance of Carbon CeramicComposites in Rain Water Environment

REN Yubo; PENG Jinfang; CAO Chao; TANG Pan; SHEN Changhui; FANG Jingting; ZHU Minhao

doi:10.11973/jxgccl202301014

Materials and Mechanical Engineering > 2023 > 47(1): 93-99,110. > DOI: 10.11973/jxgccl202301014

REN Yubo, PENG Jinfang, CAO Chao, TANG Pan, SHEN Changhui, FANG Jingting, ZHU Minhao. Current-Carrying Friction and Wear Performance of Carbon CeramicComposites in Rain Water Environment[J]. Materials and Mechanical Engineering, 2023, 47(1): 93-99,110. DOI: 10.11973/jxgccl202301014

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Current-Carrying Friction and Wear Performance of Carbon CeramicComposites in Rain Water Environment

Tribology Research Institute, Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China

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Received Date: September 07, 2021
Revised Date: November 07, 2022

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Abstract

The current-carrying friction and wear tests of carbon ceramic composite for brake disc were carried out by the pin-disk friction and wear testing machine, and the friction and wear properties of carbon ceramic composite under different friction conditions were studied. The results show that in rainwater environment without current-carrying, with rainwater flow rate increasing from 0 to 1 mL·min^-1, the surface roughness of carbon ceramic composite decreased significantly, while the friction coefficient and wear rate decreased slightly; the wear mechanism included spalling and slight oxidation wear. Under the current-carrying condition without rainwater, with current intensity increasing from 0 to 100 A, the surface roughness and friction coefficient decreased significantly, and the wear rate increased obviously; the wear mechanism included spalling, abrasive wear, adhesive wear and arc ablation. Compared with those affected by the single factor, the surface roughness and friction coefficient decreased significantly under the combined action of current carrying and rainwater, but the law of the wear rate increasing with the rainwater flow or the current intensity was not obvious; the wear mechanism was spalling, oxidation wear, abrasive wear and adhesive wear.
- carbon ceramic composite,
- rainwater flow rate,
- current-carrying wear,
- wear mechanism

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