| abstract |
Provided are a composite lubricatingmaterial, engine oil, grease and lubricant, excellent in lubricity. The composite lubricating material comprises at least a graphite-based carbon material and/or graphene-like exfoliated from the graphite-based carbon material dispersed in a base material. The graphite-based carbon material is characterized by having a rhombohedral graphite layer (3R) and a hexagonal graphite layer (2H), wherein a Rate (3R) of the rhombohedral graphite layer (3R) and the hexagonal graphite layer (2H) , based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate (3R) = P3/(P3+P4)xlOO - Equation 1 wherein P3 is apeak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method. Fig. 21 GRAPHENE PRECURSOR Lu' Rate (3R)I |