Effect of rare earth La on friction and wear resistance of WS2-based composite coating at high temperature

Effects of Rare Earths on Microstructure and Wear Resistance in Metal Additive Manufacturing: A Review

“…In high-temperature tribology, REOs contribute to the reduction in the COF and wear rate by forming a film. For example, the engine components in the aerospace sector operate in high-temperature environments and need to have excellent resistance to high temperatures and friction [146]. The REOs in the modified materials can chemically react or physically adsorb at the friction interface to form a film with low shear strength, which can effectively mitigate the wear behavior.…”

Effect of deposition pressure on friction and wear properties of BWS2 composite coatings

“…Cai prepared a La-Ti/WS 2 composite coatings using a non-equilibrium magnetron sputtering method. An appropriate La-Ti content was found to improve the density, friction, and wear properties of the La-Ti/WS 2 composite coatings [5]. Lin incorporated WS 2 material into Cu, resulting in a significant reduction in the friction coefficient of Cu/WS 2 composites [16].…”

“…As a new type of solid lubricating material, WS 2 is widely used in the aerospace field because of the shear slip between S and W molecules under the action of a weak shear force to achieve anti-friction and lubrication [2,3]. However, relevant studies have shown that the WS 2 coating can easily combine with oxygen atoms in air and oxidize in a humid atmospheric environment owing to its loose and porous organizational structure [4] and the active hanging bonds at the edge of the crystal [5,6], resulting in low wear resistance and inability to operate under long-life and high-load conditions.…”