Issues

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2018

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vol. 16 / 

Issue 3

 



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O. I. Soshko, V. O. Soshko, and I. P. Siminchenko
«Mechanical–Plasma Treatment of Metal»
425–450 (2018)

PACS numbers: 34.35.+a, 52.77.-j, 81.15.Jj, 81.16.-c, 81.20.Hy, 81.20.Ka, 81.40.Np, 81.65.Cf

The necessity of solving new problems at the nanometre and ‘proton’ scales associated with the problem of solid-body destruction under conditions of reversible (adsorptive) interaction of the body with the medium is formulated. As shown, the general concepts of the physical nature of the appearance of physicomechanical properties of a solid under the influence of the medium are general thermodynamic concepts of the tendency of the free energy of a system to decrease due to the adsorption of the medium. Such macroscopic representations constructed without taking into account microscopic phenomena cause inadequate understanding and interpretation of the mechanism of environmental influence. This work discusses the decisive role of the crack as a factor initiating, at the time of destruction, various physical processes and phenomena of a quantum nature, which initiate not only multistage chemical transformations of the initial surface-active medium up to the formation of a hydrogen plasma, but also provide a prompt supply of protons into the region of plastic deformation in front of the crack tip. Conditions promoting the initiation and self-acceleration of chemical transformations of the medium within the destruction zone as well as the manifestation of a positive feedback between mechanical and chemical processes are revealed. A new method for forming structural parts by means mechanical–plasma treatment (MPT) of a metal is proposed.

Keywords: treatment, deformation, crack, fracture, activation, hydrogen, ionization, proton, plasma, diffusion, trap, structure, nanomaterials, strength

https://doi.org/10.15407/nnn.16.03.425

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