*2.4.3 MoS2*

Molybdenum disulphide are transition-metal dichalcogenides like Tungsten disulphide (WS2) work on the mechanism of interlamellar shear between covalently bonded hexagonal basal planes like that of graphite. Their performance is affected by moisture content [16].

Apart from the advantages mentioned earlier, solid lubricants also have a few disadvantages. They have less ability to carry away heat and contaminants away from the contact. They have poor self-healing properties, and they are not easily entrained into tribological contacts.
