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Recent content by JTreglio

  1. JTreglio

    Materials to resist CaCl2 corrosion

    I'm not sure of the conditions. The application is oil-well drilling. The customer has most of his tools chrome plated, but for the sour wells the calcium chloride eats them away. It's an inner surface of a narrow bore tube that needs to be coated, so HVOF is out. We're looking to use a...
  2. JTreglio

    Titanium-6Al-4V - Elevated temperature surface protection

    Titanium nitride oxidizes at ~600 C. If you have to go higher, titanium aluminum nitride oxidizes at 800 C. Jim Treglio
  3. JTreglio

    Materials to resist CaCl2 corrosion

    What materials are best suited to resist attack from calcium chloride (CaCl2)? I know that chrome does not.
  4. JTreglio

    Zinc Vs.Aluminum

    Why not have the bolts coated with IVD aluminum? Jim Treglio
  5. JTreglio

    High speed, high temp. ball bearing self contained cartridge.

    Interesting project. What do you mean by "high" temperature -- how high is high? It can't be that high if you're planning on oil lubrication. Jim Treglio
  6. JTreglio

    Parkerizing surface hardness

    As noted in the previous posts, manganese phosphate is very soft and does not provide any wear resistance. If your need is for a corrosion and wear resistant surface, we have found (and patented) that it is possible to phosphate hard-coated steels. Essentially, we deposit a hard coating such...
  7. JTreglio

    Seeking presenter on tribology

    I'm organizing a conference for the National Association for Surface Finishers (NASF). The meeting is entitled "Surface Engineering for Energy Generation, Conservation, and Transmission." One of the sessions, not surprisingly, is on energy conservation, and we would like to have at least one...
  8. JTreglio

    Questions about coatings via CVD Vacuum Chamber

    gfansher is correct on the variations of TiN. In addition, there are at least three variations of the PVD process, depending on how the metal is vaporized: sputtering, e-beam evaporation, and cathodic arc. Jim Treglio
  9. JTreglio

    Surface Treatment for Inco 718

    For wear resistance you can try a hard PVD nitride, such as titanium nitride (TiN). For high temperature applications (over 500 C), titanium aluminum nitride (TiAlN) would be best. I'm not sure how the process will affect fatigue life for INCO 718. Jim Treglio
  10. JTreglio

    Galling/Seizure of Ductile Iron Shaft

    A suggestion: sputter deposit a solid lubricant such as moly disulfide or tungsten disulfide on the shaft. These materials love high loads, especially tungsten disulfide, and will eliminate the galling as well as give you lower friction levels overall. There are companies that offer the...
  11. JTreglio

    Corrosion of Ti 6 Al 4 V

    The parts are used in marine undersea applications, so salt water resistance is most important. Temperature is not a factor. Jim Treglio
  12. JTreglio

    Corrosion of Ti 6 Al 4 V

    We have a customer concerned about the corrosion resistance of Ti64, and would like to run some corrosion tests, such as ASTM B117. Does anyone know what a typical time to corrode for Ti64 is in an ASTM B117 test? How long does it take if it is Tiodized (alkaline anodized)? Jim Treglio
  13. JTreglio

    surface coating/finish and impact on paste dryer performance?

    Sputter-deposited molybdenum disulfide or tungsten disufide would work -- both are low friction coatings that generally resist chemicals -- but it would not be easy to coat the interior of your cylinder. You might have to add a base hard coating. Coating the blades would depend on whether or...
  14. JTreglio

    Questions about coatings via CVD Vacuum Chamber

    Just looked up PVD coating services on the Thomas Net. There are 33 listed, of which about half are in your area. Jim Treglio
  15. JTreglio

    Questions about coatings via CVD Vacuum Chamber

    Three companies that come to mind in your area are Goldstar Coatings, Balzer's, and IonBond. If the tools aren't seeing much in temperature, either TiN or TiCN should suffice. If they get very hot, TiAlN would be the coating of choice. TiN is the cheapest, so I would start there. Jim Treglio
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