Molybdenum Coating
Molybdenum Disulphide coating is a dry film lubricant capable of working in load bearing situations.
Why Molybdenum Disulphide?
Molybdenum Disulphide coating is a dry film lubricant capable of working in load-bearing situations. As the name suggests, the coating is “dry”, or cured. Molybdenum Disulphide is also known colloquially as Moly or by its chemical formula, MoS2.
It has a lamellar lattice molecular structure, which helps with substrate adhesion and slip. The sulphur atoms within this molecular structure slide as they have weak Van der Waals forces. This sliding action lubricates and reduces the wear of mating components.
There are Molybdenum Disulphide coatings that have been formulated with other polymers within them, such as Silicone or PTFE. Marcote will happily advise you as to the best coating choice for your particular requirements. Molybdenum Disulphide coatings are typically found across any industry that has close-fitting moving parts.
Performance Properties
Excellent lubrication
Thin coating thickness
Common Components for Coating
- Bearings
- Drive shaft bearing surfaces
- Gears
- Rotors
- Subsea rotating equipment
- Valves
Performance Information
- Chemical Resistance – Inert against most chemicals
- Coating Thickness – Nominal 10µm to 25µm depending on formulation
- Corrosion Resistance – Good
- Electric Resistance – Electrical insulation properties
- Fatigue Resistance – Good to excellent depending on formulation
- Flammability – Not inflammable
- Friction – Very low
- Loadability – Fair to very good depending on formulation
- Solvent Resistance – Insoluble
- Surface Roughness – Ra <2µm dependant on the substrate
- Temperature Resistance – to +400°C depending on formulation
- Sliding Wear Resistance – Excellent
- Wear Resistance with Abrasive Media – Moderate to poor depending on formulation
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