| AVS 65th International Symposium & Exhibition | |
| Advanced Surface Engineering Division | Tuesday Sessions |
| Session SE+PS-TuM |
| Session: | Plasma-assisted Surface Modification and Deposition Processes |
| Presenter: | Wei Zha, Univesity of Windsor, Canada |
| Authors: | W. Zha, Univesity of Windsor, Canada C. Zhao, University of Windsor, Canada X. Nie, University of Windsor, Canada |
| Correspondent: | Click to Email |
Cathodic plasma electrolysis (CPE) is used to reduce the friction and increase the wear resistance of cast iron. During the process, cast iron sample serves as a cathode where the plasma discharging occurs, increasing the surface hardness and leaving an irregular array of craters on the surface. As the applied voltage increases, the number and size of craters become larger. The areal density of craters (as reservoir) and oil retention are determined from SEM image analysis and surface profiler. Reciprocating tribotests are conducted on blank sample, CPE-treated samples and sample with crosshatched surface. The results show that the CPE-treated samples can have a lower coefficient of friction and higher wear resistance than other two kinds of samples. As for the CPE-treated samples, the friction behaviors are also discussed by considering effects from their areal density of craters, surface roughness and oil retention.
Keywords: Cathodic plasma electrolysis, Cratering, Hardening, Friction, Wear