| abstract |
A novel lubricant capable of suppressing seizure due to friction between metal materials is provided. SOLUTION: A smectite clay mineral and a primary amine, a secondary amine, or an ammonium ion cationized by a tertiary amine, and ammonium ions are inserted between the layers of the smectite clay mineral so as to be primary. The amine, secondary amine, or tertiary amine contains one or more long-chain alkyl groups having 8 or more carbon atoms in the main chain, and the total number of carbon atoms in the main chain of the long-chain alkyl group is 16 or more. lubricant. However, a lubricant that does not contain lithium borate. Furthermore, the structure includes one or more inorganic solid particles selected from graphite, graphene, graphene oxide, fullerene, carbon nanotube, diamond-like carbon (DLC), onion-like carbon, molybdenum disulfide, or tungsten disulfide. Preferred lubricant. [Selection figure] None |