| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thin Films and Coatings: Properties, Processing and Applications
|
| Presentation Title |
Influence of HFCVD Diamond Coatings on the Friction and Adhesion in Aluminum and Magnesium Extrusion |
| Author(s) |
Stefan Lechner, Sören Müller |
| On-Site Speaker (Planned) |
Stefan Lechner |
| Abstract Scope |
The extrusion of delicate products, such as aluminum power bonding wires or bioresorbable stents made of magnesium, places challenging demands on the properties of the extrusion dies. Very low tolerances in dimensional accuracy and surface quality necessitate suppression of die wear and adhesion effects. In the present study, the effect of thin film diamond coatings on the friction and adhesion in extrusion was investigated by means of a high temperature, high speed friction test. Several diamond coatings were deposited by Hot Filament Chemical Vapor Deposition on a WC-Co alloy containing 6% cobalt. Using specimen made of aluminum alloy EN-AW1080A and magnesium alloy ZME211, friction and adhesion tests were performed at multiple temperatures and normal pressures typical for the extrusion process. The evaluation of the test data obtained indicates that the diamond coating has only a very minor influence on the frictional behavior of the alloys tested. Likewise, no systematic effect on the adhesion behavior was found. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Thin Films and Interfaces, Aluminum |