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  2. Technische Fakultät
  3. Department Werkstoffwissenschaften

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  2. Research
  3. Casting Technology
  4. High pressure die casting and lightweight materials
  5. Diamond coating of molds and tools

Diamond coating of molds and tools

In page navigation: Research
  • Additive Manufacturing
  • Modelling and Simulation
  • Casting Technology
    • Investment casting and high temperature alloys
    • High pressure die casting and lightweight materials
      • Alloy development for high pressure die casting
      • In-situ reinforcement of Aluminium casting alloys
      • Diamond coating of molds and tools
      • Integral foam molding
      • Integration of piezoceramic modules
  • Ultra-hard Coatings
  • High Performance Alloys
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Diamond coating of molds and tools


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)
(Enlarge)
Scheme of chemical vapour deposition of crystalline diamond
(Enlarge)
Mold inserts in various coating conditions
(Enlarge)
Crystalline diamond coating
(Enlarge)
FIB cut through substrate, interlayer and coating
(Enlarge)
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

Chair of Materials Science and Engineering Metals
Martensstr. 5
91058 Erlangen
Germany
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