Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-29T07:48:08.919Z Has data issue: false hasContentIssue false

Low friction W-C:H coatings for wear resistance in roller bearings

Published online by Cambridge University Press:  17 March 2011

Thorsten Kacsich
Affiliation:
Metaplas Ionon GmbH, Bergisch Gladbach, Germany
Peter Werner Gold
Affiliation:
Institute for Machine Elements and Machine Design, RWTH Aachen, Germany
Jörg Loos
Affiliation:
Institute for Machine Elements and Machine Design, RWTH Aachen, Germany
Get access

Abstract

Life time limiting effects in roller bearings and gear wheel applications are wear, sizing, and fatigue damages like micro pitting. These mechanisms are related to a number of parameters: lubrication conditions, surface roughness, and the hardness of the bulk material. Nowadays, Me-DLC coatings like MAXITÓ W-C:H offer surface protection under dry, mixed, and hydrodynamic conditions. This allows the increase of load capacities, respectively the decrease of gearing size. Moreover, a reduction of toxic lubrication additives can be achieved. The performance of the MAXITÓ W-C:H coatings in roller bearings was investigated on the FE8 test rig under mixed friction conditions. The W-C:H was deposited via the PVD technique of magnetron sputtering onto case hardened steel. The coating thickness was varied from 1.5 to 5 m m with respect to optimised wear resistance. The wear was drastically reduced by powers of ten as compared to uncoated roller bearings.

Type
Research Article
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Deutsche Forschungsgemeinschaft: Umweltverträgliche Tribosysteme durch geeignete Werkstoffverbunde und Zwischenstoffe am Beispiel der Werkzeugmaschine, SFB 442, RWTH Aachen, Arbeits- und Ergebnisbericht 2000 Google Scholar
2. Gold, P.W., Assmann, C., Loos, J., 2nd International Conference THE coatings in Manufacturing Engineering, Hannover, Germany, May 9-10, 2001, M4-1Google Scholar
3 Thornton, J.A., J. Vac. Sci. Technol., vol. 11, 4 (1974) 666 Google Scholar