Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
| Time (s) | Co-efficient of friction | Mean wear scar diameter (mm) | Wear scar volume (×10−4 mm3) |
|---|---|---|---|
| 900 | 0.0668 | 0.574 | 5.99 |
| 1800 | 0.0720 | 0.669 | 12.69 |
| 2700 | 0.0620 | 0.715 | 17.21 |
| 3600 | 0.0539 | 0.570 | 5.78 |
