Activity Characterisation of diamond coated steel tools

Internally funded project


Project Details

Project leader:
PD Dr.-Ing. Stefan Rosiwal


Contributing FAU Organisations:
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)

Start date: 01/01/2000


Research Fields

Ultra Hard Coatings
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


Abstract (technical / expert description):


For Aluminium high pressure die casting, different diamond coated steel tools with TiNB-intermediated layers are applied at industrial partners. The lifetime of bending tools can be increased from a few weeks to several months.



Diamond coated steel sonotrodes for the ultrasonic welding of Aluminium cables are currently also being tested by industrial partners.



The CVD diamond layer can permanently inhibit the reaction of the tool surface with liquid or solid Aluminium. The necessary strength of the steel must be adjusted after every heat treatment, which is steel specific, to avoid material failure due to insufficient fatigue strength. The CVD diamond coating of Tungsten tools is being researched as an alternative or as an addition to the high temperature intermediate layer to avoid special heat treatments.


Publications
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Rosiwal, S., Helmreich, T., Mengele, T., Ballmes, H., Hausmann, C., & Regenberg, C. (2017). Diamant auf Stahl gegen den Oberflächenverschleiß durch Aluminiumanhaftungen. Konstruktion, 3/2017, IW8-IW9.
Lodes, M., Sailer, S., Rosiwal, S., & Singer, R. (2013). Adhesive bonding and brazing of nanocrystalline diamond foil onto different substrate materials. Applied Surface Science, 282, 335-341. https://dx.doi.org/10.1016/j.apsusc.2013.05.129
Kellermann, K., Fandrey, J., Rosiwal, S., & Singer, R. (2011). CVD-Diamond Coating as Wear Protection for Standard Heat-Treatable Steel. In A. Fischer, K. Bobzin (Eds.), (pp. 247-255). Aachen: Wiley-VCH.
Kellermann, K., Erhardt, S., Fandrey, J., Rosiwal, S., & Singer, R. (2010). Influence of surface roughness on the tribological properties of HF-CVD diamond coated heat-treatable steel. Wear, 269(11-12), 811-815. https://dx.doi.org/10.1016/j.wear.2010.08.009
Lodes, M., Rosiwal, S., & Singer, R. (2010). Self-supporting nanocrystalline diamond foils - A new concept for crystalline diamond on any technical surface. Key Engineering Materials, 438, 163-169. https://dx.doi.org/10.4028/www.scientific.net/KEM.438.163
Kellermann, K., Bareiss, C., Rosiwal, S., & Singer, R. (2008). Well adherent diamond coatings on steel substrates. Advanced Engineering Materials, 10(7), 657-660. https://dx.doi.org/10.1002/adem.200800060
Bareiss, C., Hackl, G., Popovska, N., Rosiwal, S., & Singer, R. (2006). CVD diamond coating of steel on a CVD-TiBN interlayer. Surface & Coatings Technology, 201(3-4), 718-723. https://dx.doi.org/10.1016/j.surfcoat.2005.12.035
Bareiss, C., Perle, M., Rosiwal, S., & Singer, R. (2006). Diamond coating of steel at high temperatures in hot filament chemical vapour deposition (HFCVD) employing chromium interlayers. Diamond and Related Materials, 15(4-8), 754-760. https://dx.doi.org/10.1016/j.diamond.2005.10.053
Schwarz, S., Rosiwal, S., Musayev, Y., & Singer, R. (2003). High temperature diffusion chromizing as a successful method for CVD-diamond coating of steel – Part II. Diamond and Related Materials, 12, 701-706.
Schwarz, S., Musayev, Y., Rosiwal, S., Schaufler, C., Singer, R., & Meerkamm, H. (2002). High temperature diffusion chromizing as a sucsessful method for CVD-diamond coating of steel. Diamond and Related Materials, 11, 757-762.

Last updated on 2018-15-10 at 11:50