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  1. adamant

    Questions about coatings via CVD Vacuum Chamber

    They might also provide help: http://www.ccl.fraunhofer.org/working_areas/technologies/technology_03/e_surface.php (at Michigan State University, East Lansing, Michigan 48826-1226)
  2. adamant

    DLC chemical compatibility

    Diamond-like carbon is chemically inert in comparison to many other materials. This is especially true for hydrogenated amorphous carbon a-C:H (most commercial DLC), as the carbon "dangling" bonds will be saturated by hydrogen. Problems will rather arise in case the coating has pin holes, which...
  3. adamant

    Amorphous Carbon Film Coating

    The load density will certainly have some effect on the coating processus. Also, the other parts might not be as well cleaned as yours. This may affect your parts, if something is vaporized in the vacuum chamber and reaches the surface of your parts.
  4. adamant

    Contact pattern problem on hypoid with shot peening

    Perhaps you need to modify the lapping treatment for the shot peened flanks.
  5. adamant

    Amorphous Carbon Film Coating

    Actually, the quality of the bonding doesn't depend so much about the deposition method. It's the design of the interface an the parameters used that are important. Often, metallic interlayers are used without being mentioned by the manufacturer. It should be no problem to deposit a-C:H on...
  6. adamant

    German translation "nickel plating"

    Yes, Flache means area. Use dict.leo.org for translations, it is a very good online dictionary.
  7. adamant

    Cleaning process

    Thank you very much! :) Currently we are cleaning with our washing machine and an ultrasonic caustic bath, though this process is far from perfect. For the most soiled machine parts, our project partner does the cleaning, so we have only to remove the surface oil for conservation.
  8. adamant

    Cleaning process

    Oil and grease, I suppose.
  9. adamant

    Cleaning process

    Thank you. We wash the parts in deionised water before we dry them and put them in the vacuum chamber, wherer they are plasma etched. On most steel parts, the coating adheres well. It seems really to be a problem with surface embedded residues from mechanical processing. This grinding medium...
  10. adamant

    Cleaning before coating

    E.g. we have 16MnCrS5 parts. It seems to be a problem concerning embedded oil in the surface because of the surface grounding process. Thus I started a similar thread in the Materials Engineers / Paint/Coating engineering forum.
  11. adamant

    Graphite based low friction coating

    Another dry lubricant: WS2. This site offers several types of WS2 coatings: http://www.dicronite.com/
  12. adamant

    Cleaning process

    Thank you for the reply. With clean steel parts we don't have problems. With ground 16MnCrS5 (e.g.) surfaces we do. I suppose embedded oil from the grinding process is the problem. Oxide layers should be removed by our plasma etching. We do PVD coating.
  13. adamant

    Cleaning process

    Hello! Can anybody give me some advice on cleaning? In case of some extremely oily, greasy or otherwise soiled engine parts with rough surfaces, my coatings keep peeling of after deposition. I have tried cleaning with benzine, an industrial washing machine, ultrasonic baths and different...
  14. adamant

    Cleaning before coating

    Hello! Can anybody give me some advice on cleaning? In case of some extremely oily, greasy or otherwise soiled engine parts with rough surfaces, my coatings keep peeling of after deposition. I have tried cleaning with benzine, an industrial washing machine, ultrasonic baths and different...

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