ABSTRACT
Friction and wear can be kept low if the contact interface is well-lubricated. Even when the contact interface is not supplied with lubricants, friction and wear are changed by adsorbed gasses (Bowden et al., 1954) or by frictional repetition. This means that tribological properties are responses of a tribosystem that is lubricated on purpose or is under the effects of surroundings. Therefore, material properties of only one of two contacting bodies cannot be independently related to the tribological properties in a direct way.
