Friction of Si3N4 Ball / Si3N4 Disk Sliding in Water with SiO2 Nano-particles

Tribology Online

Kosuke Ito¹  Koshi Adachi¹  Koji Kato¹ 

[1] Tribology Laboratory, Graduate School of Engineering, Tohoku University;

关键词: friction;    water lubrication;    silica;    nano-particles;    silicon nitride;   

DOI  :  10.2474/trol.1.34

来源: DOAJ

【 摘 要 】

Silica nano-particles that have the average diameter of 7 nm were added to water, and their effects on friction were studied for Si3N4 self-mated sliding couples by a ball-on-disk tribotester under boundary lubricated conditions. By adding 0.01 or 0.1 wt % of silica particles to water, the running-in distance was reduced significantly in both cases at the sliding velocity of 0.21 m/s and resulted in low and stable friction (μ0.05) under low velocity conditions (v ≤ 0.12 m/s). The optimum concentration of the silica for the low and stable friction was 0.01 wt % among those tested in this study, which is the closest to the solubility limit of silica to water.

【 授权许可】

Unknown