Engineered Lubricants, Coatings and Lapping Compounds for Industry
  • Phone
  • Fax
  • Email
  • Address
  • Welcome Guest
    Shopping cart: 0 item(s)

    MoS2 Dry Film Lubricant

    What is Molybdenum Disulfide and why is it showing a good lubricating behavior?

    Molybdenum Disulfide, also known as Molybdenum Disulphide, MoS2 and Moly, is one of the most widely used solid film lubricants. Like graphite and tungsten disulfide (WS2), MoS2 is a dichalcogenide. The lubricating properties of molybdenum disulfide lubricant are due to a weak atomic interaction (Van der Waals Force) of the sulfide anions, while the covalent bond within the molybdenum is strong.

    Which are the easiest and widely recognized ways of applying MoS2 coating?

    There are a number of ways to apply MoS2 low friction coatings to the desired substrate. These include:

    • Rubbing and burnishing
    • Impingement with or without inorganic binder
    • Spraying or dipping paint like substance containing the molybdenum disulfide as a lubricant
    • Physical vapor deposition

    Some of the specifications covering this application are; MIL-PRF-46010, AS5272, AMS2526.

    Why molybdenum disulfide coating is considered unbeatable in comparison to its competitors?

    In moving/mating components, friction causes considerable loss of energy, poorer performance, and limits the wear life of the components. Molybdenum Disulfide can provide a low coefficient of friction, sometimes as low as 0.05 COF. This will be dependent on the humidity, cleanliness, and sliding conditions of your application.

    Also molybdenum disulfide dry lubricant can:

    • Operate in a wide range of temperatures up to 600 deg F and maintain its lubricity in high load, high speed conditions.
    • Be very effective in inhibiting corrosion as well when combined with the proper resins and binders.

    Lubrication relies on the slippage along the sulfur atoms. All of the properties of the lamella structure are intrinsic and no external form of moisture is required (as it is with graphite). Mos2 performs best when water vapor is not present, making molybdenum disulphide coating ideal for vacuum applications.



    Dry Film Lubricant bearing

     

    Coating Specifications

    Appearance Blue
    Silver Grey
    Coefficient of Friction 0.06 to 0.15
    Substrates All ferrous or non-ferrous metal
    Man-made solids & plastics
    Cure Time No cure time is required when applied at ambient temperature
    Applications Chucks, Collets and Tools
    Circuit Breakers and Switches
    Compressors and Rheostats
    Cryogenic Pumps
    Electrical Connectors
    Engine and Drive Train Parts
    High Vacuum Applications
    Machine tools, Pins, Taps
    Magnetic Heads
    Pilot Valves, Chain Saws
    Rubber Gaskets, "O" Ring Seals
    Seamer Rolls
    Slide Mechanisms

    Environmental Specifications

    Relative Load Carrying 250,000 PSI
    Ambient Temperature Range -185 to 350 ºC
    Vacuum Temperature Range -185 to 1100°C at 10-14 Torr
    Chemical Stability Inert, non-toxic, corrosion resistant

    Material Specifications

    Molecular Weight 160.08
    Density 4.8 g/cc
    Magnetism Non-magnetic
    Hardness 1.0 on Mohs Test
    Electrical Properties Has semiconductor properties