Diamond coating of molds and tools - Chair of Materials Science and Engineering for Metals

A CVD diamond layer with TiNB-intermediate 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. As an alternative or as an addition CVD diamond coating of Tungsten tools is in research, as the high temperature intermediate layer and special heat treatments can be avoided.
These activities are carried out in close cooperation with the group "Ultra-hard Coatings" of the chair.

Contact:

- apl. Prof. Dr.-Ing. habil. Stefan Rosiwal

Hot filament CVD diamond coating plant (Foto Erich Malter)
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Scheme of chemical vapour deposition of crystalline diamond
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Mold inserts in various coating conditions
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Crystalline diamond coating
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FIB cut through substrate, interlayer and coating
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Hot filament CVD diamond coating plant (Foto Erich Malter)

Scheme of chemical vapour deposition of crystalline diamond

Mold inserts in various coating conditions

Crystalline diamond coating

FIB cut through substrate, interlayer and coating

Publications:

Rosiwal S., Helmreich T., Mengele T., Ballmes H., Hausmann C., Regenberg C.:
Diamant auf Stahl gegen den Oberflächenverschleiß durch Aluminiumanhaftungen
In: Konstruktion (2017), p. IW8-IW9
ISSN: 0720-5953
Kellermann K., Fandrey J., Rosiwal S., Singer R.:
CVD-Diamond Coating as Wear Protection for Standard Heat-Treatable Steel
International Symposium on Friction, Wear and Wear Protection 2008 (Aachen)
DOI: 10.1002/9783527628513.ch30
Kellermann K., Bareiss C., Rosiwal S., Singer R.:
Well adherent diamond coatings on steel substrates
In: Advanced Engineering Materials 10 (2008), p. 657-660
ISSN: 1438-1656
DOI: 10.1002/adem.200800060
Bareiss C., Hackl G., Popovska N., Rosiwal S., Singer R.:
CVD diamond coating of steel on a CVD-TiBN interlayer
In: Surface & Coatings Technology 201 (2006), p. 718-723
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2005.12.035
Bareiss C., Perle M., Rosiwal S., Singer R.:
Diamond coating of steel at high temperatures in hot filament chemical vapour deposition (HFCVD) employing chromium interlayers
In: Diamond and Related Materials 15 (2006), p. 754-760
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2005.10.053
Schwarz S., Musayev Y., Rosiwal S.:
Diamant auf Stahl. Diffusionschromierung im Vakuum für die CVD-Diamantbeschichtung
In: Magazin für Oberflächentechnik 2001 (2001), p. 59-62
ISSN: 0026-0797
URL: http://www.hanser.de/zeitschriften-db/MO/MO100934.htm
Schwarz S., Rosiwal S., Musayev Y., Singer R.:
High temperature diffusion chromizing as a successful method for CVD-diamond coating of steel Part II
In: Diamond and Related Materials 12 (2003), p. 701-706
ISSN: 0925-9635
Schwarz S., Musayev Y., Rosiwal S., Schaufler C., Singer R., Meerkamm H.:
High temperature diffusion chromizing as a sucsessful method for CVD-diamond coating of steel
In: Diamond and Related Materials (2002), p. 757-762
ISSN: 0925-9635
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TWV-44VGB6Y-7&_user=616145&_coverDate=06%2F30%2F2002&_alid=61213825&_rdoc=6&_fmt=summary&_orig=search&_cdi=5572&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=b570dd5ffcb188afd2838a21b782f347
Jentsch HG., Rosenbauer G., Rosiwal S., Singer R.:
Graphite interlayer formation during CVD diamond coating of iron base alloys: The analogy to metal dusting
In: Advanced Engineering Materials 2 (2000), p. 369-374
ISSN: 1438-1656
URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WW2-46WP5DF-346&_user=616145&_coverDate=10%2F01%2F2002&_alid=61213825&_rdoc=7&_fmt=summary&_orig=search&_cdi=7118&_sort=d&_st=4&_docanchor=&_acct=C000032322&_version=1&_urlVersion=0&_userid=616145&md5=5c5ca2e6e0cf3e86643a51b2e4f6587b