The present invention aims to provide solid particles with improved lubrication, a solid lubricant including the solid particles, and a metal member including, on the surface thereof, the solid particles or the solid lubricant. The solid particles of the present invention include base particles and carbon fluoride particles attached to surfaces of the base particles.

The present invention relates to a self-lubricating coating comprising a dispersion made of nanoparticles containing sulfur that are incorporated into a silver matrix, wherein the nanoparticles containing sulfur have the composition Ag.sub.2S and/or Au.sub.2S. The present invention furthermore relates to a self-lubricating coating comprising a dispersion made of fluorinated graphene, and/or carbon nanotube (CNT), and/or carbon nanoparticles of the formula (CF).sub.x incorporated into a silver matrix, wherein the fluorinated graphene, CNT, or carbon nanoparticles of the formula (CF).sub.x have a fluorine to carbon ratio of 1 to 1.25. The present invention furthermore relates to a method for the fabrication of the coating, and an electrical contact which comprises such a coating.

Halogenated graphene nanoplatelets that are characterized by having, except for the carbon atoms forming the perimeters of the graphene layers of the nanoplatelets, (i) graphene layers that are free from any element or component other than sp2 carbon, and (ii) substantially defect-free graphene layers; the total content of halogen in the nanoplatelets is about 5 wt % or less calculated as bromine and based on the total weight of the nanoplatelets. Processes for producing such nanoplatelets and various end uses for such nanoplatelets are also described. Halogenated exfoliated graphite having a total content of halogen of about 5 wt % or less calculated as bromine and based on the total weight of the halogenated exfoliated graphite and processes for producing the halogenated exfoliated graphite are also provided.