Kröner J, Tremmel S, Wartzack S (2019)
Publication Language: German
Publication Type: Conference contribution, Conference Contribution
Publication year: 2019
Publisher: Druckservice Zillekens
City/Town: Stolberg-Venwegen
Book Volume: 60
Pages Range: 12/1-12/10
Conference Proceedings Title: 60. Tribologie-Fachtagung 2019. Reibung, Schmierung und Verschleiß. Forschung und praktische Anwendungen.
Event location: Göttingen
ISBN: 978-3-9817451-4-6
URI: https://www.archiv.mfk.tf.fau.de/?file=pubmfk_5d9dab63c250b
Under extreme environmental conditions, such as very high or low temperatures, radiation and vacuum or due to restrictions, for example, in clean rooms, in the food and paper industries, oil- or grease-lubricated standard rolling bearings can only be used to a limited extent or not at all. Existing solutions are expensive due to the special materials or lubricants used or have only a very limited service life due to the reduction or avoidance of the mineral oil-based lubricant. The last-named is due to the omission of the positive properties of the lubricant, such as heat transport and friction reduction or wear reduction through separation of the surfaces.
The alternative approach presented here involves the use of cost-effective standard rolling bearings, which have been modified with a friction and wear-reducing coating on individual components of the rolling bearing. The investigations described in this article focus on applications under normal atmosphere at room temperatures. Radial deep groove ball bearings of type 6206 are tested in operating life tests on a four-bearing test rig. All investigated coating systems are described in the literature as basically usable under dry running conditions and normal atmosphere: Graphite, titanated molybdenum disulfide (MoS2:Ti), a modified (a-C:H:X) and a metal-containing hydrogen-containing amorphous carbon coating (a-C:H:Me). In extensive screening tests, the a-C:H:Me coating has proven to be the best alternative in terms of lifetime. The different coating systems were applied to the raceways of the rolling bearing using PVD or PACVD processes and tested with both steel (100Cr6) and ceramic balls (silicon nitride - Si3N4) as counter bodies. The combination with ceramic balls was then followed up, as well as additional pairings, in which the steel balls were also provided with a-C:H:Me coating. The results of these experiments in terms of operating life, tribological behaviour and, in particular, the repeatability of the results will be presented in this paper.
APA:
Kröner, J., Tremmel, S., & Wartzack, S. (2019). Untersuchungen an a-C:H:Me-beschichteten Rillenkugellagern unter Trockenlaufbedingungen. In Gesellschaft für Tribologie e.V. (Hrg.), 60. Tribologie-Fachtagung 2019. Reibung, Schmierung und Verschleiß. Forschung und praktische Anwendungen. (S. 12/1-12/10). Göttingen: Stolberg-Venwegen: Druckservice Zillekens.
MLA:
Kröner, Julia, Stephan Tremmel, und Sandro Wartzack. "Untersuchungen an a-C:H:Me-beschichteten Rillenkugellagern unter Trockenlaufbedingungen." Tagungsband 60th German Tribology Conference 2019. Friction, Lubrication and Wear. Research and Practical Applications., Göttingen Hrg. Gesellschaft für Tribologie e.V., Stolberg-Venwegen: Druckservice Zillekens, 2019. 12/1-12/10.
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