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A new device for simultaneous measurement of friction force, normal force and friction coefficient
(1975)
A systems analysis data sheet for friction and wear tests and an outline for simulative testing
(1977)
Current Aspects of Tribology
(1982)
Failure criteria in thin film lubricatio - investigation of the different stages of film failure
(1976)
In Memoriam Adolf Martens
(1989)
Influence of Asperity Contact Conditions on the Failure of Sliding Elastohydrodynamic Contacts
(1977)
Influence of Asperity Contact Conditions on the Failure of Sliding Elastohydrodynamic Contacts
(1977)
Rapid Measuring Techniques for Electrical Contact Resistance Applied to Lubricant Additives Studies
(1976)
Rapid Measuring Techniques for Electrical Contact Resistance Applied to Lubricant Additives Studies
(1976)
Adhesion bonding at a bimetallic interface is considered in terms of the electronic structure of combined metals in a highly simplified model. If specific surface properties are neglected, the contact area may be interpreted by a `jellium' model of thinned atom cores smeared on the interface and imbedded in a thinned sea of electrons. Adhesion bond strength will then depend primarily on free-electron density. In addition to the free-electron `jellium' formalism, the electronic structure of metals and the character (s, p, d) of electrons free for adhesion bonding must be considered. For metal single crystals an influence of the structure of the Fermi surface can also be pointed out. The adhesional pairs of dissimilar metals are assumed to fall into line with groups of `donor-acceptor' combinations of different strengths of adhesion.
The key features of tribology interfacial phenomena of interacting bodies in relative motion are as origin of friction and wear scientifically interesting and have important applications in technology and engineering. The interfacial interactions have been studied in various theoretical and experimental approaches. Depending on the scope of the investigation and the nature of the tribological solid/fluid/solid or solid/solid system under study, these approaches apply contact mechanics, hydrodynamics, and rheology as well as solid state physics and chemistry. Accordingly, also various experimental techniques have been used, ranging from Coulomb's classical tribometer to the contemporary atomic force microscope.
This paper reviews by way of examples some of the basic interfacial facets of tribology from bulk continuum to atomistic/discrete phenomena in a macroscopic, microscopic, and nano-scale point of view. For tribo-testing it is important to characterize the tribo-system under study by an appropriate choice of a systems envelope and to consider the hierarchy of interaction levels.
Tribology at BAM: a survey
(1989)
Tribology of polymers
(1989)