Electro-spark deposition of amorphous Fe-based coatings in vacuum and in argon controlled by surface wettability

Sheveyko, A.N.; Kuptsov, K.A.; Antonyuk, M.N.; Базлов, А. И.; Shtansky, Dmitry V.

doi:10.1016/j.matlet.2022.132195

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…An important feature of the pulsed arc melting technology is a non-contact simultaneous melting of granules and the substrate and the absence of intensive mixing of the melt. Vacuum deposition with cathodic polarity of the granule layer and the substrate ensures excellent spreading of the melt over the surface of the substrate [34]. It is important that the composition of the top coating layer predominantly corresponds to the initial composition of the granules.…”

Section: Final Remarksmentioning

confidence: 99%

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TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

Sheveyko,

Kuptsov,

Kiryukhantsev-Korneev

et al. 2023

Coatings

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A method was proposed for increasing the oxidation resistance of promising wrought Ti2AlNb ortho-alloys by depositing γ-TiAl-based coatings. Using original vacuum pulse-arc melting of 100 μm thick granule layers, coatings with different Al/Ti ratios and a thickness of 50–60 µm were obtained on the surface of the Ti50Al25Nb25 alloy. Granules Ti50Al44Nb4.9Mo1B0.1 (at.%), 20–60 μm in size, were employed. To vary Al content, initial granules and their mixture with Al powder were used. Excellent adhesion of the coatings is ensured by the similar chemical composition and structure of the substrate and coatings, as well as micro-metallurgical reactions between granules and the substrate that occur during treatment. The resulting coatings had a submicron gradient structure consisting of TiAl and Ti3Al intermetallic compounds. During oxidation at 850 °C for 10 h, an oxide layer consisting of a mixture of α-Al2O3, TiO2, and AlNbO4 was formed on the coating surfaces. With an increase in the annealing duration to 100 h, a dense α-Al2O3 oxide layer, approximately 0.5 µm thick, was formed over the primary oxide mixture, the quality of which was higher in coatings enriched with aluminum.

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Section: Final Remarksmentioning

confidence: 99%

“…This ensures ideal coating adhesion and partially heals substrate defects, which is critical for additive methods. High process purity and increased productivity are achieved when ESD is conducted in a vacuum [33,34]. An increase in the ESD coating thickness can be achieved by increasing the discharge power.…”

Section: Introductionmentioning

confidence: 99%

TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

Sheveyko,

Kuptsov,

Kiryukhantsev-Korneev

et al. 2023

Coatings

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show abstract

“…Recently, multicomponent electrode materials, including high-entropy and mediumentropy alloys, have attracted great scientific and practical interest [32][33][34]. To obtain these electrode materials, the following methods are used: powder metallurgy methods, mechanical alloying and high-temperature sintering, spark plasma sintering, etc.…”

Section: Introductionmentioning

confidence: 99%

Coatings Prepared by Electro-Spark Alloying with SHS Electrode Materials Based on Ti-B-Fe-AlN

et al. 2023

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In this work, the features of the phase composition, structures, and properties of coatings obtained on a high-speed steel substrate (steel R6M5) were studied. The coatings were prepared using the ESA method (electro-spark alloying). Electrode materials prepared through self-propagating high-temperature synthesis (SHS) based on (Ti-B-Fe)xAlN with the addition of nanosized AlN particles in the amount of x = 0.5, 10, 15 wt % were used as electrodes. The structure, phase composition, and physical and mechanical properties of the SHS electrode materials are reported. It was found that the coatings inherited the structure of the SHS electrode material and formed two characteristic zones for x = 0 and three zones for x = 5, 10, 15. The surface hardness of the substrate made of the high-speed steel R6M5 with the developed coatings was found to increase up to five times compared to the uncoated substrate. It was found that the wear resistance of the samples with the coating was four to six times higher than that of uncoated samples.

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Effect of Y2O3 addition on the microstructure and properties of NiCoCrAlYTa coatings prepared by electrospark deposition: From a perspective of thermal physical properties

Deng

Chen

et al. 2022

Surface and Coatings Technology

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Electro-spark deposition of amorphous Fe-based coatings in vacuum and in argon controlled by surface wettability

Cited by 6 publications

References 7 publications

TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

TiAl-Based Oxidation-Resistant Hard Coatings with Different Al Contents Obtained by Vacuum-Pulse-Arc Granule Melting

Coatings Prepared by Electro-Spark Alloying with SHS Electrode Materials Based on Ti-B-Fe-AlN

Effect of Y2O3 addition on the microstructure and properties of NiCoCrAlYTa coatings prepared by electrospark deposition: From a perspective of thermal physical properties

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