| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7001691 | Tribology International | 2018 | 25 Pages |
Abstract
The tribological tests highlighted that the friction coefficient increased by increasing temperature, while decreased by enhancing sliding speed. Titanium transfer on both coated and uncoated balls was observed, indicating that adhesion phenomena occurred in large extent. As the main effect, AlTiN hindered Ti6Al4V adhesion, thus increasing the friction coefficient, which was linearly proportional to the amount of material transfer from the titanium alloy to the ball surface. Analogously, craterisation phenomena, usually caused by adhesion, were less evident in turning operation when using AlTiN coated tools. Also the highest temperature at the workpiece-cutting tool interface could be partially explained by the highest friction coefficient observed for AlTiN materials.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Vincenzo Tebaldo, Lauri Kilpi, Helena Ronkainen, Maria Giulia Faga,