How MoS2 Works as a Lubricant: Mechanism Explained

What is MoS2: How MoS2 Works as a Lubricant

Molybdenum Di Sulfide or MoS2 is a layered material, with each layer consisting of a nano thin sheet of molybdenum atoms which are sandwiched between two nano sheets of sulfur atoms. ​​The layers are held together by weak van der Waals forces, allowing them to easily slide over each other. ​

How MoS2 works as lubricant?

Formation of Boundary Lubricating Films: ​

During working of bearing (rolling or sliding), the MoS2 layers are transferred to the metal surfaces of bearing in contact. The Transfer can be through coating or applying grease. As the components move, these transferred layers form a solid boundary lubricating film on the metal surfaces. This film provides a protective barrier between the metal parts and minimizes direct metal-to-metal contact.

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What are the challenges of lubrication (Liquid and grease)?

• Temperature Extremes​
• Weight and Space Constraints​
• Risk of Leakage​
• Maintenance Requirements​
• Contamination​
• Environmental Concerns​
• Complex Systems​
• Incompatibility​
• Grease Migration​

What is the best way to use MoS2 as lubricant?

Solid Lubrication coating of nano sized MoS2 on bearing components.​

​MoS2 is a dry lubricant, which means it doesn’t require the continuous application of liquid or grease lubricants. This feature reduces the need for maintenance and minimizes the risk of contamination in aerospace application applications.​

​Using solid MoS2 coatings eliminates the risk of leakage or spillage associated with traditional liquid lubricants, making it an environmentally friendly choice. It also reduces maintenance and cleanup requirements.​

​MoS2 retains its lubricating properties even at extreme temperatures makes the best choice for aerospace​

​The coating thickness can be controlled precisely all over the surface making a uniform coating. Best choice for high speed bearings