Nanostructured Bionic PVD-Coatings for Forming Tools

Abstract:

It is very important to minimize wear and friction in forming processes in order to avoid adhesion between work piece and tool. For the realization of these requirements, the PVD-coating system CrAlN was deposited and tested on substrates made from high speed steel 1.3343 by means of a reactive sputter process. The coatings were deposited as single- and multilayers with a metallic Cr-interlayer. Prior to realizing the appropriate coating design, the substrates were pre-structured. For this purpose natural surfaces were used as a pattern and tested in this research work. The skin of an insect serves as a model and its fine structures were reproduced on the substrate surface by milling. The generated specimens were analyzed with a scanning electron microscope, nanoindenter and ball on disc tester to compare the performance of the coating systems.

• Periodical: Key Engineering Materials (Volume 438)
• Pages: 41-48
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.438.41
• Online since: May 2010
• Authors: Wolfgang Tillmann, Evelina Vogli, Jan Herper, Matthias Haase
• Keywords: Bionic Layer, CrAlN, Dung Beetle, Magnetron Sputtering, Multilayer

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