Amorphous Carbon Coatings for Locally Adjusted Tribological Properties in Sheet Bulk Metal Forming

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autor(en): Hetzner H, Tremmel S, Wartzack S
Zeitschrift: Key Engineering Materials
Verlag: Trans Tech Publications
Jahr der Veröffentlichung: 2012
Band: 504-506
Seitenbereich: 969-974
ISSN: 1013-9826
eISSN: 1662-9795
Sprache: Englisch


Abstract


In sheet bulk metal forming, locally adapted friction properties of the contact tool/workpiece are an appropriate means for the targeted enhancement of the material flow, enabling an improved form filling and lowered forming forces. However, the implementation of desirable friction conditions is not trivial. And further, friction is inseparably linked to wear and damage of the contacting surfaces. This calls for a methodological approach in order to consider tribology as a whole already in the early phases of process layout, so that tribological measures which allow fulfilling the requirements concerning local friction and wear properties of the tool surfaces, can already be selected during the conceptual design of the forming tools. Thin tribological coatings are an effective way of improving the friction and wear properties of functional surfaces. Metalmodified amorphous carbon coatings, which are still rather new to the field of metal forming, allow tackling friction and wear simultaneously. Unlike many other types of amorphous carbon, they have the mechanical toughness to be used in sheet bulk metal forming, and at the same time their friction properties can be varied over wide ranges by proper choice of the deposition parameters. Based on concrete research results, the mechanical, structural and special tribological properties of tungstenmodified hydrogenated amorphous carbon coatings (a-C:H:W) are presented and discussed against the background of the tribological requirements of a typical sheet bulk metal forming process.© (2012) Trans Tech Publications.



FAU-Autoren / FAU-Herausgeber

Hetzner, Harald
Lehrstuhl für Konstruktionstechnik
Tremmel, Stephan Dr.-Ing.
Lehrstuhl für Konstruktionstechnik
Wartzack, Sandro Prof. Dr.-Ing.
Lehrstuhl für Konstruktionstechnik


Zitierweisen

APA:
Hetzner, H., Tremmel, S., & Wartzack, S. (2012). Amorphous Carbon Coatings for Locally Adjusted Tribological Properties in Sheet Bulk Metal Forming. Key Engineering Materials, 504-506, 969-974. https://dx.doi.org/10.4028/www.scientific.net/KEM.504-506.969

MLA:
Hetzner, Harald, Stephan Tremmel, and Sandro Wartzack. "Amorphous Carbon Coatings for Locally Adjusted Tribological Properties in Sheet Bulk Metal Forming." Key Engineering Materials 504-506 (2012): 969-974.

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Zuletzt aktualisiert 2019-12-03 um 12:02