Read e-book online Micromechanisms of Friction and Wear: Introduction to PDF

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By Dmitrij Lyubimov, Visit Amazon's Kirill Dolgopolov Page, search results, Learn about Author Central, Kirill Dolgopolov, , Leonid Pinchuk

ISBN-10: 3642351476

ISBN-13: 9783642351471

ISBN-10: 3642351484

ISBN-13: 9783642351488

The glossy imaginative and prescient of the micromechanism of friction and put on is explored, from the exam of excellent and genuine crystal constitution and adhesion houses to the dynamics of stable frictional interplay. the basic quantum-mechanical and relativity ideas of particle interplay are regarded as foundation of friction micro-process exam. The adjustments in stable constitution originated from the effect of alternative forms of strength fields are thought of. The critical threat of relativity influence manifestation by means of friction is defined. The severe kingdom of friction – triboplasma – used to be studied. Structural peculiarities of triboplasma, the kinetics of its transformation in the course of frictional interplay in addition to the impression of plasma and postplasma methods on tribojunction friction features and complicated formation by means of friction have been tested. The ebook addresses to tribology researchers.

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Extra info for Micromechanisms of Friction and Wear: Introduction to Relativistic Tribology

Example text

31) where Vc. p. —the volume of the lattice elementary cell with coincidence positions; Vc —the volume of the crystal elementary cell. The small-angle boundaries can be characterized by the value of the parameter close to 1. For instance, for the large-angle boundaries, it is > 1; it is = 5 when the angle of rotation is 37◦ . The energy of intergrain boundaries γ is the sum of energies of separate dislocations; the sum depends on the orientation of adjacent grains. The zero on the graph abscissa axis (Fig.

The mixed boundaries comprise the dislocation grids with three Burgers vectors. Some crystallographic planes pass through the intergrain boundary and continue to adjacent grains. It means that some atoms in these planes are in perfect position in respect to the atoms in adjacent crystallites even on the intergrain boundaries. These nodes of lattices are called the nodes of coincidence; they form the lattice of coincidence positions. The parameter is introduced as the measure of density of coincidence positions in the polycrystal: = Vc.

5 —crack semilength; E—modulus of material elasticity. The microcracks may have multiple lateral branches producing intricate geometrical systems. It is believed that the integrity of communicating cracks propagates in many cases throughout the entire solid body volume forming a single capillary system. The latter possesses a large total surface and plays an essential role in interactions of materials with environment. The microcapillary system changes into the bonds following the thermal and mechanical solid body evolution.

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Micromechanisms of Friction and Wear: Introduction to Relativistic Tribology by Dmitrij Lyubimov, Visit Amazon's Kirill Dolgopolov Page, search results, Learn about Author Central, Kirill Dolgopolov, , Leonid Pinchuk


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