Erosion of materials under the effect of compression plasma flows

Cherenda, N.N.; Ласковнев, А. П.; Basalai, A. V.; Углов, В.В.; Astashynski, V. M.; Kuzmitski, A. M.

doi:10.1134/s2075113315020070

Cited by 5 publications

(4 citation statements)

References 13 publications

(17 reference statements)

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“…This dependence had almost linear character within the error of mass measurement. Linear dependences of the removed mass on the number of pulses and certain regions of the absorbed energy density of CPF treatment were observed for steel, beryllium bronze and copper (Cherenda et. al., 2015).…”

Section: Resultsmentioning

confidence: 97%

“…The incorporation of additional alloying elements (copper and nitrogen) reduced the relative concentration of aluminum and vanadium due to the normalization of concentration to 100%. The concentration of copper decreased with the growth of the energy density absorbed by surface layer, that is associated with the erosion of the surface layer under plasma exposure and increase of the molten layer thickness (Cherenda et. al., 2015, Cherenda et.…”

Section: Resultsmentioning

confidence: 99%

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THE FORMATION OF SURFACE Ti-Al-V-Cu ALLOY BY COMBINED ION-PLASMA TREATMENT

et al. 2022

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In this work surface Ti-Cu-Al-V alloy was synthesized by compression plasma flows impact on Ti-6Al-4V titanium alloy preliminary coated by copper. The treatment of Cu/ Ti-6Al-4V samples was carried out by three pulses of compression plasma flows generated in the nitrogen atmosphere (energy density absorbed by the surface was varied in the range of 26 -43 J/cm 2 per pulse). The phase and elemental composition, structure, microhardness and friction coefficient of the formed surface alloy were investigated. It has been established that plasma treatment resulted in the formation of α-Ti solid solution containing alloying elements in the surface layer and δ-TiN on the surface. Increase of the energy absorbed by the surface during plasma impact led to decrease of Cu concentration (2.7-0.5 at.%) in the analyzed layer. The surface alloy was characterized by a uniform distribution of Ti, Al, and V atoms in contrast to the distribution of these elements on the surface of the untreated Ti-6Al-4V alloy. The microhardness increase up to 4.7 GPa (1.3 times higher in comparison with initial Ti-6Al-4V alloy) was found after compression plasma flows treatment at 43 J/cm 2 . Tribological tests showed that the minimal friction coefficient (0.13) was observed after treatment at the absorbed energy density of 26 J/cm 2 .

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

THE FORMATION OF SURFACE Ti-Al-V-Cu ALLOY BY COMBINED ION-PLASMA TREATMENT

et al. 2022

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“…The concentration of the coating element in the mixed layer is mainly controlled by two processes. The first of them is redistribution of the coating element in the melt due the convection mass transfer mechanism [14]. The second process is erosion of the surface layer during plasma impact due to a radial hydrodynamic flow of the melt from the center to the edges of the sample under plasma flow pressure [13,14].…”

Section: Resultsmentioning

confidence: 99%

“…The first of them is redistribution of the coating element in the melt due the convection mass transfer mechanism [14]. The second process is erosion of the surface layer during plasma impact due to a radial hydrodynamic flow of the melt from the center to the edges of the sample under plasma flow pressure [13,14]. The increase of energy absorbed by the surface leads to the growth of the melted layer thickness and the increase of the surface erosion intensity, thus resulting in diminishing the coating element concentration.…”

Section: Resultsmentioning

confidence: 99%

Modification of Ti-6Al-4V alloy element and phase composition by compression plasma flows impact

Cherenda

Basalai

Shymanski

et al. 2018

Surface and Coatings Technology

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Phase and element composition, microhardness of Ti-6Al-4V titanium alloy, Ti/Ti-6Al-4V and Zr/Ti-6Al-4V systems treated by compression plasma flows have been investigated in this work. X-ray diffraction, scanning electron microscopy, energy-dispersion X-ray microanalysis and Vickers microhardness measurements were used for samples characterization. The findings showed that treatment of the "coating/titanium alloy" system by compression plasma flows allowed decreasing the toxic elements (Al, V) concentration in the surface layer of Ti-6Al-4V titanium alloy. The variation of the energy absorbed by the surface layer resulted in the change of the element concentration and the formation of a number of phases in the modified layer: a solid solution on the basis of α' phase in Ti-6Al-4V and Ti/Ti-6Al-4V systems and β phase in Zr/Ti-6Al-4V system. The formation of δ-TiN x at the surface due to interaction of surface layer atoms with nitrogen atmosphere in the vacuum chamber was also found. The change of phase composition and quenching effects resulted in the microhardness increase.

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