WS2 Oil Additive

(WS2 Oil Additive)

ws2 oil additive is a pioneering anti-friction and anti-wear nanotechnology engine oil additive based on proprietary patented technology developed at the Weizmann Institute of Science. The additive’s lubricious properties are due to inorganic, fullerene-shaped Tungsten Di-sulfide nano particles that reduce friction and heat and create continuous tribofilm coating on moving engine parts. This unique continuous tribofilm is especially efficient under extreme pressure and temperature conditions.

Using a four-ball friction tester, samples of ws2 powder were mixed with a base oil to form sample oils with different mass ratios and then the tribological behavior of each oil was investigated. The morphology of wear scars on the friction surfaces was also studied.

The results show that WS2 at a low concentration of 1%, 90 nm in the sample oil can effectively decrease the coefficient of friction (COF) and abrasion loss. However, the WS2 particles are prone to exfoliation when it is applied to the surface of the friction pair under normal load and the action of shear force. As the exfoliated WS2 molecular layer remains on the pits and peak tips of the friction surface, it may directly contact and collide with the friction surface to form a wear furrow, which may appear more clearly in the sample oil with 1%, 90 nm WS2. The samples with ionic liquid as a solvent can better integrate the WS2 and the base oil, which can reduce the reunion between the nanoparticles.

(WS2 Oil Additive)