A thermodynamic model of friction

Klamecki, Barney E.

doi:10.1016/0043-1648(80)90078-2

Cited by 51 publications

(35 citation statements)

References 2 publications

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“…Perhaps Klamecki [89][90][91][92] is the first researcher who correctly describes the friction process based on the concepts of irreversible thermodynamics. He demonstrates [91] that the process of sliding of two bodies in contact with non-zero relative velocity is a non-equilibrium process.…”

Section: Entropy-wear Relationshipmentioning

confidence: 99%

“…Using a near-equilibrium analysis via entropy production, he shows the occurrence of energy dissipation in sliding processes. Klamecki [89,90] shows that entropy can be defined to describe the state of the bodies in sliding contact and the definition of entropy can be generalized to include all pertinent energy dissipation mechanisms, particularly wear process. He studies the structure that develops near-surface regions of sliding surfaces, and postulates that when energy supplied to the system is not dissipated uniformly through the sliding bodies, the system response will be unstable and definite non-uniform structures are expected to develop [91].…”

Section: Entropy-wear Relationshipmentioning

confidence: 99%

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On the Thermodynamics of Friction and Wear―A Review

Amiri

Khonsari

2010

Entropy

165

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Section: Entropy-wear Relationshipmentioning

confidence: 99%

Section: Entropy-wear Relationshipmentioning

confidence: 99%

On the Thermodynamics of Friction and Wear―A Review

Amiri

Khonsari

2010

Entropy

165

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“…According to [1,2,4,5], wear leads to an increase in entropy, i.e., during wear, the distribution of matter in the thermodynamic system occurs. This is due to the fact that in [1,2,4,5] the rubbing body and the environment is a thermodynamic system. In our work, one rubbing body is a thermodynamic system, which loses its mass and, hence, reduces its entropy during wear.…”

Section: Thermodynamic Analysis Of Frictional Phenomenonmentioning

confidence: 99%

Self-Organization during Friction of Slide Bearing Antifriction Materials

Гершман¹,

Миронов²,

Гершман³

et al. 2015

Entropy

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This article discusses the peculiarities of self-organization behavior and formation of dissipative structures during friction of antifriction alloys for slide bearings against a steel counterbody. It shows that during self-organization, the moment of friction in a tribosystem may be decreasing with the load growth and in the bifurcations of the coefficient of friction with respect to load. Self-organization and the formation of dissipative structures lead to an increase in the seizure load.

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“…Wear rate can vary over a wide range of magnitudes; a large variety of different wear mechanisms exist, but wear is a fundamental characteristic of friction for any tribosystem. Some researchers [151][152][153] have also concluded that the other generic characteristic of friction is the formation of tribofilms or secondary (i.e. formed during friction) structures on the surface [153].…”

Section: Dynamic Formation Of Nanoscaled Films On the Surface Of Adapmentioning

confidence: 99%

Hierarchical adaptive nanostructured PVD coatings for extreme tribological applications: the quest for nonequilibrium states and emergent behavior

Fox-Rabinovich

Yamamoto

Beake

et al. 2012

Science and Technology of Advanced Materials

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Adaptive wear-resistant coatings produced by physical vapor deposition (PVD) are a relatively new generation of coatings which are attracting attention in the development of nanostructured materials for extreme tribological applications. An excellent example of such extreme operating conditions is high performance machining of hard-to-cut materials. The adaptive characteristics of such coatings develop fully during interaction with the severe environment. Modern adaptive coatings could be regarded as hierarchical surface-engineered nanostructural materials. They exhibit dynamic hierarchy on two major structural scales: (a) nanoscale surface layers of protective tribofilms generated during friction and (b) an underlying nano/microscaled layer. The tribofilms are responsible for some critical nanoscale effects that strongly impact the wear resistance of adaptive coatings. A new direction in nanomaterial research is discussed: compositional and microstructural optimization of the dynamically regenerating nanoscaled tribofilms on the surface of the adaptive coatings during friction. In this review we demonstrate the correlation between the microstructure, physical, chemical and micromechanical properties of hard coatings in their dynamic interaction (adaptation) with environment and the involvement of complex natural processes associated with self-organization during friction. Major physical, chemical and mechanical characteristics of the adaptive coating, which play a significant role in its operating properties, such as enhanced mass transfer, and the ability of the layer to provide dissipation and accumulation of frictional energy during operation are presented as well. Strategies for adaptive nanostructural coating Topical Review design that enhance beneficial natural processes are outlined. The coatings exhibit emergent behavior during operation when their improved features work as a whole. In this way, as higher-ordered systems, they achieve multifunctionality and high wear resistance under extreme tribological conditions.

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A thermodynamic model of friction

Cited by 51 publications

References 2 publications

On the Thermodynamics of Friction and Wear―A Review

On the Thermodynamics of Friction and Wear―A Review

Self-Organization during Friction of Slide Bearing Antifriction Materials

Hierarchical adaptive nanostructured PVD coatings for extreme tribological applications: the quest for nonequilibrium states and emergent behavior

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