Static description of a stochastic condensation system

Zhilenko, T. I.; Yushchenko, O. V.

doi:10.1134/s1063784213110303

Cited by 4 publications

(2 citation statements)

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“…Based on the phase plane method, we will discuss the evolution of the system in more detail assuming, in turn, that one of the degrees of freedom has the highest relaxation rate [ 34 ].…”

Section: Kinetics Of the Formation Of Al-c-b Coatings By The Esa Mmentioning

confidence: 99%

“…The conditions under which the processes that determine the ESA procedures occur are non-equilibrium. The author of [ 33 ], as well as those of [ 34 ], have shown that in these cases, there may be present such phenomena as alloying electrode erosion, development of anode mass flow, the coating formation, and the formation of an altered surface layer. Therefore, it is relevant to apply the synergistic laws to the ESA procedures based on the study of phase transitions of the process dynamic components using the phase plane method.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Technological Capabilities for Forming Al-C-B System Coatings on Steel Surfaces by Electrospark Alloying Method

et al. 2021

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In this paper, the possibility of applying the electrospark alloying (ESA) method to obtain boron-containing coatings characterised by increased hardness and wear resistance is considered. A new method for producing such coatings is proposed. The method consists in applying grease containing aluminium powder and amorphous boron to the surface to be treated and subsequently processing the obtained surface using the ESA method by a graphite electrode. The microstructural analysis of the Al-C-B coatings on steel C40 showed that the surface layer consists of several zones, the number and parameters of which are determined by the energy conditions of the ESA process. Durametric studies showed that with an increase in the discharge energy influence, the microhardness values of both the upper strengthened layer and the diffusion zone increased to Wp = 0.13 J, Hµ = 6487 MPa, and Wp = 4.9 J, Hµ = 12350 MPa, respectively. The results of X-ray diffraction analysis indicate that at the discharge energies of 0.13 and 0.55 J, the phase composition of the coating is represented by solid solutions of body-centred cubic lattice (BCC) and face-centred cubic lattice (FCC). The coatings obtained at Wp = 4.9 J were characterised by the presence of intermetallics Fe4Al13 and borocementite Fe3 (CB) in addition to the solid solutions. The X-ray spectral analysis of the obtained coatings indicated that during the electrospark alloying process, the surface layers were saturated with aluminium, boron, and carbon. With increasing discharge energy, the diffusion zone increases; during the ESA process with the use of the discharge energy of 0.13 J for steel C40, the diffusion zone is 10–15 μm. When replacing a substrate made of steel C40 with the same one material but of steel C22, an increase in the thickness of the surface layer accompanied by a slight decrease in microhardness is observed as a result of processing with the use of the ESA method. There were simulated phase portraits of the Al-C-B coatings. It is shown that near the stationary points in the phase portraits, one can see either a slowing down of the evolution or a spiral twisting of the diffusion-process particle.

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“…Based on the phase plane method, we will discuss the evolution of the system in more detail assuming, in turn, that one of the degrees of freedom has the highest relaxation rate [ 34 ].…”

Section: Kinetics Of the Formation Of Al-c-b Coatings By The Esa Mmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%