Friction reduction in low-load hydrodynamic lubrication with a hydrophobic surface
A novel tribometer capable of measuring low friction forces and low loads at high speeds has been employed to measure the friction coefficient in a pure sliding, ball-on-flat contact in hydrodynamic lubrication conditions. The tribometer was custom-built for measuring friction at low loads, to allow...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
2007-02.
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| Subjects: | |
| Online Access: | Get fulltext |
| LEADER | 01797 am a22001693u 4500 | ||
|---|---|---|---|
| 001 | 356079 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Choo, J.H. |e author |
| 700 | 1 | 0 | |a Spikes, H.A. |e author |
| 700 | 1 | 0 | |a Ratoi, M. |e author |
| 700 | 1 | 0 | |a Glovnea, R. |e author |
| 700 | 1 | 0 | |a Forrest, A. |e author |
| 245 | 0 | 0 | |a Friction reduction in low-load hydrodynamic lubrication with a hydrophobic surface |
| 260 | |c 2007-02. | ||
| 856 | |z Get fulltext |u https://eprints.soton.ac.uk/356079/1/Friction%2520Reduction%2520in%2520a%2520Low%2520Load%2520Hydrodynamic%2520Lubrication%2520with%2520a%2520Hydrophobic%2520Surface.pdf | ||
| 520 | |a A novel tribometer capable of measuring low friction forces and low loads at high speeds has been employed to measure the friction coefficient in a pure sliding, ball-on-flat contact in hydrodynamic lubrication conditions. The tribometer was custom-built for measuring friction at low loads, to allow the authors to investigate the feasibility of using the liquid-slip phenomenon for the lubrication of high-sliding MEMS. The theory behind lubrication with liquid slip and its effect on friction is briefly discussed. Contacting surfaces were treated to create hydrophobic/hydrophilic or hydrophilic/hydrophilic pairs. Hydrophobic surfaces were made by coating mica with a self-assembled silane monolayer while the hydrophilic surfaces used were freshly cleaved mica and plasma-cleaned steel. Experiments were conducted at sliding speeds of up to 2 m/s and loads below 0.2 N. An aqueous glycerol solution was used as lubricant. Results obtained with hydrophilic/hydrophilic surfaces were in accord with hydrodynamic lubrication theory. Tests with hydrophobic/hydrophilic surfaces revealed a reduction in friction, which may be attributed to lubricant slip against the hydrophobic surface. | ||
| 655 | 7 | |a Article | |