Contrasting Lubrication Properties of Imidazolium-Based Ionic Liquids Affected by the Nature of the Surface Under High Vacuum

Nanolubrication by ionic liquids: molecular dynamics simulations reveal an anomalous effective rheology

“…11 Similarly, anion and cation composition and structure directly affect the same intrinsic properties 3,7,11,12 together with friction and wear. 1,[13][14][15] The influence of both IL composition and surface nature on tribofilm formation, lubricant squeeze-out, surface corrosion and wear 16 was also evidenced experimentally. Questions then arose about the replication of all the above-mentioned effects at a smaller scale and, more generally, about the influence of each nanoscale feature on the global system response.…”

Protic Ionic Liquids: Evolving Structure–Property Relationships and Expanding Applications

“…The advantages of using ILs as lubricants are their low or negligible volatility, high viscosity, which prevents spinning off surfaces, and liquid state, which enables them to replenish across a surface . While some aprotic ILs have good lubricant properties, − a key benefit of the PILs is that they have the potential to be significantly cheaper, while still having desirable lubrication properties. Generally, the PILs that have been reported as potential lubricants have a long alkyl chain on an ammonium cation paired with an anion that is closely related to conventional lubricants. ,, The PIL molecules are assumed to be oriented with their polar end toward the metal surface, forming a close packed layer. , …”

Toward resolving anxiety about the accelerated corrosive wear of steel lubricated with the fluorine-containing ionic liquids at elevated temperature

“…A great number of research papers focusing on these characteristics have been published in the field of tribology research. Some studies of ILs focusing on the tribological performance as lubricants have examined high-temperature usage [2][3][4][5][6][7][8][9][10], under high vacuum [11][12][13][14][15][16], application for the lubrication of non-ferrous metal or non-metallic materials [7,17,18], bulk viscosity characteristics [19][20][21], thermal degradation [22,23], tribofilm formation [13,24,25], corrosion [22,26,27], and more.…”