ABSTRACT
Tribology is defined as “the science and technology of interacting surfaces in relative motion, and of associated subjects and practices”. Tribology is a discipline that traditionally belongs to mechanical engineering. The subject of tribology is identified as one of great importance; yet largely because of its multidisciplinary nature, it has received insufficient attention. Historical factors have influenced the development of tribology, in particular solid lubricants. A solid lubricant can generally be defined as a material that provides lubrication, under essentially dry conditions, to two surfaces moving relative to each other. A solid lubricant is any material used as a thin film or a powder on a surface to provide protection from damage during relative movement and to reduce friction and wear. Fluid film lubrication is the most desirable form of lubrication, since during normal operation the films are thick enough to completely separate the load-carrying surfaces.
