Structure and properties of coatings produced by pulsed electrospark deposition on nickel alloy using Mo-Si-B electrodes

Kudryashov, A. E.; Lebedev, D. N.; Potanin, A. Yu.; Левашов, Е. А.

doi:10.1016/j.surfcoat.2017.12.025

Cited by 29 publications

(9 citation statements)

References 34 publications

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“…Electro spark deposition has been successfully used to protect nickel alloys against oxidation [ 33 , 34 , 35 ]. Novel promising coatings that would be resistant to long-term high-temperature oxidation, corrosion action, and wear are currently being sought for [ 36 ]. Thus, the material was processed by mechanical alloying, consolidated and machined into an electrode suitable for the electro spark deposition technique.…”

Section: Discussionmentioning

confidence: 99%

Mechanically Alloyed CoCrFeNiMo0.85 High-Entropy Alloy for Corrosion Resistance Coatings

et al. 2021

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High-entropy alloys could provide a solution for corrosion resistance due to their impressive properties. Solid-state processing of high purity Co, Cr, Fe, Ni and Mo metallic powders and consolidation resulted in a bulk material that was further machined into electro spark deposition electrodes. After the stainless steel substrate surface preparation, thin successive layers of the high-entropy alloy were deposited and Pull-Off testing was performed on the newly obtained coating, for a better understanding of the adhesion efficiency of this technique. Good adhesion of the coating to the substrate was proved by the test and no cracks or exfoliations were present. Corrosion resistance testing was performed in a liquid solution of 3.5 wt.% NaCl for 6 hours at room temperature and the results obtained validated our hypothesis that CoCrFeNiMo0.85 high-entropy alloys could provide corrosion resistance when coating a stainless steel substrate.

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Section: Discussionmentioning

confidence: 99%

Mechanically Alloyed CoCrFeNiMo0.85 High-Entropy Alloy for Corrosion Resistance Coatings

et al. 2021

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“…SHS ceramics in Mo–Si–B system were used as the targets for magnetron sputtering and electrodes for the electro‐spark deposition of nanostructured oxidation‐resistant Mo–Si–B and Mo–Si–B–N coatings . Magnetron‐sputtered coatings were characterized by a width of 3.5–4.5 μm and high mechanical properties (measured by nanoindentation using 4 mN load): hardness 32 GPa, Young's modulus 340 GPa, elastic recovery 66%.…”

Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

“…In, authors deposited the Mo–Si–B coatings on the heat‐resistant nickel alloy using the electro‐spark deposition technology. Mo–Si–B electrodes were produced by the electro‐discharge cutting of the consolidated SHS products.…”

Section: Shs In Mo–si–b Systemmentioning

confidence: 99%

SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

et al. 2018

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High-temperature materials attract a growing interest from both the scientists and engineers, since the increase of the operating temperatures is crucial for the enhancement of many energy conversion processes. Another area of application of high-temperature materials is high-velocity air flight, where the ultra-high temperature ceramics (UHTCs) are pivotal for the creation of robust nose tips and leading edges of the skins of high-velocity jets. Compounds of refractory metals with silicon, such as TaSi 2 , MoSi 2 , ZrSi 2 , are characterized by unrivaled resistance in aggressive environments. However, most of them are not suitable for application as high-temperature structural materials due to the low mechanical properties. Therefore, they are frequently used as a constituent for the high-temperature composite materials such as TaSi 2 -SiC, ZrC-MoSi 2 , ZrB 2 -MoSi 2 , ZrB 2 -ZrSi 2 . One of the most convenient ways of producing these composite materials is self-propagating hightemperature synthesis (SHS), known for its high productivity, energyefficiency, and ecological safety. This review summarizes the latest developments of the SHS of the silicon-based high-temperature ceramics.

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“…Potanin et al [7] studied the effect of MoB phase content on the oxidation resistance of MoSi 2 -MoB ceramics at 900 • C. They showed that a composite material with 90 at.% of MoSi 2 and 10 at.% of MoB was characterized by the strongest oxidation resistance. After testing the ceramics with these compositions as electrode materials for electrospark deposition of EP718ID nickel alloy in air [8], the same ceramics containing 10% MoB were found to have the best properties. An analysis of the coating demonstrated that its structure consists of a nickel-based solid solution with hP12-type Mo 2 Ni 3 Si ternary silicide distributed over it.…”

Section: Introductionmentioning

confidence: 99%

Structure Formation and Tribological Properties of Mo-Si-B-Hf Electrospark Coatings Based on Mo2Ni3Si Laves Phase

et al. 2022

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Coatings were produced on the EP741NP nickel alloy substrates by electrospark deposition (ESD) in argon using an MoSi2-MoB-HfB2 electrode. In situ high-resolution transmission electron microscopy and X-ray diffraction analysis studies have identified the temperature above which the strengthening Mo2Ni3Si Laves phase is formed in the coatings. At 25 °C, the coatings with a predominant content of the Laves phase are characterized by enhanced wear resistance, as well as a lower coefficient of friction compared to the non-annealed coatings containing binary silicides. At 700 °C, the EP741NP substrate was characterized by the lowest friction coefficient (Ktr = 0.35), and its wear was approximately at the same level as the wear of both coatings.

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Structure and properties of coatings produced by pulsed electrospark deposition on nickel alloy using Mo-Si-B electrodes

Cited by 29 publications

References 34 publications

Mechanically Alloyed CoCrFeNiMo0.85 High-Entropy Alloy for Corrosion Resistance Coatings

Mechanically Alloyed CoCrFeNiMo0.85 High-Entropy Alloy for Corrosion Resistance Coatings

SHS of Silicon‐Based Ceramics for the High‐Temperature Applications

Structure Formation and Tribological Properties of Mo-Si-B-Hf Electrospark Coatings Based on Mo2Ni3Si Laves Phase

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