Nanostructured Bionic PVD-Coatings for Forming Tools

Abstract:

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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.

Info:

Periodical:

Edited by:

M. Merklein, F.-W. Bach, K.-D. Bouzakis, B. Denkena, M. Geiger and H.-K. Toenshoff

Pages:

41-48

DOI:

10.4028/www.scientific.net/KEM.438.41

Citation:

W. Tillmann et al., "Nanostructured Bionic PVD-Coatings for Forming Tools", Key Engineering Materials, Vol. 438, pp. 41-48, 2010

Online since:

May 2010

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$35.00

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