Effects of Material Combinations on Friction and Wear of PEEK/Steel Pairs under Oil-Lubricated Sliding Contacts

6th International Conference on Fracture Fatigue and Wear

Akagaki, T.^1 ; Nakamura, T.^2 ; Hashimoto, Y.^2 ; Kawabata, M.^3

Department of Industrial System Engineering, National Institute of Technology, Hachinohe College, 16-1 Uwanotai, Tamonoki, Aomori, Hachinohe

039-1192, Japan^1

Department of Mechanical Engineering, National Institute of Technology, Hachinohe College, 16-1 Uwanotai, Tamonoki, Aomori, Hachinohe

039-1192, Japan^2

TRIBOTEX Inc., 45-7 Yamaguchi, Nagakusa-cho, Obu, Aichi

474-0052, Japan^3

关键词: Effects of materials;    Forged steel;    Friction and wear;    Friction coefficients;    Lubricated sliding contact;    Peek composites;    Sliding velocities;    Two-materials;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/843/1/012071/pdf
DOI  :  10.1088/1742-6596/843/1/012071

来源: IOP

【 摘 要 】

The effects of material combinations on the friction and wear of PEEK/steel pairs are studied using blocks on a ring wear tester under oil-lubricated conditions. The rings are made of forged steel (SF540A) and a PEEK composite filled with 30 wt% carbon fibre. The surface roughness is 0.15 and 0.32 μm Ra, respectively. The blocks are also made of the same materials as the rings: the forged steel and the PEEK composite. Finished with an emery paper of #600, the surface roughness is 0.06 and 0.23 μm Ra, respectively. Sliding tests for 4 combinations of two materials are conducted. The load is increased up to 1177 N at 1 N s-1. The sliding velocity is varied in the range of 10 to 19 m s-1. In some cases, the ring temperature is measured with a thermocouple with a diameter of 0.5 mm, located 1 mm below the frictional surface. Results indicate that the forged steel's ring and the PEEK composite's block is the best combination among 4 combinations, because seizure does not occur under the increasing load up to 1177 N at the sliding velocity of 10-19 m s-1. In contrast, seizure occurs at 15 and 19 m s-1in the other three combinations. However, the PEEK composite's ring shows a lower friction coefficient as compared to the forged steel's ring, when seizure does not occur. Wear scars are observed with a scanning electron microscope (SEM). The seizure mechanisms are then discussed.