On the application of dispersion-hardened SHS electrode materials based on (Ti, Zr)C carbide using electrospark deposition

Manakova, O. S.; Kudryashov, A. E.; Левашов, Е. А.

doi:10.3103/s1068375515050117

Cited by 7 publications

(5 citation statements)

References 6 publications

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“…To estimate theoretically the interaction between an electrode and a substrate and, to some extent, predict a composition of a coating is possible using the Palatnik criterion [25,26], which is related only to the physical constants of electrode materials as follows: , ( ) where τ a and τ k are the characteristic times of erosion (formation of melting centres in the discharge zone) of an anode and a cathode, respectively; c a , c k -heat capacity, J/(kg⋅K); ρ a , ρ k -density, kg/m 3 ; λ a , λ k -coefficient of thermal conductivity, W/(m⋅K); T a , T k -melting point, K; T 0 is the ambient temperature. This ratio does not take into account a large number of factors affecting ESA process, but, it can be used for a quantitative evaluation of 3 types of interacting between an anode and a cathode made of various materials, namely:…”

Section: Resultsmentioning

confidence: 99%

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Properties of AlB$_{12}$–Al Electric Spark Coatings on D1 Aluminium Alloy

Umanskyi¹,

Стороженко²,

Shelud’ko³

et al. 2021

Metallofiz. Noveishie Tekhnol.

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The article deals with the study of the structure and properties of electric spark coatings of AlB 12 -50 wt.% Al aluminium-matrix composite electrode material on D1 aluminium alloy. Fundamental possibility of such coatings obtaining is estimated by theoretical calculation of Palatnik's criterion (0.59). Thermal conductivity coefficient and heat capacity of the composite are calculated or determined from an experiment. Mass transfer kinetics at electric spark alloying (ESA) is studied. Considering a rather high values of the cathode mass gain, the coating applied in 6 mode (E = 2.52 J, τ = 700 µs, ALIER-52 setup) is selected for further research. The thickness (h = 380 µm), microhardness (H µ = 1.86 GPa, PMT-3 tester, P = 0.05 N) and wear at dry friction (13.7 mg/(km⋅cm 2 ), MT-68 friction machine, the pin-on-disk scheme, V = 4 m/s, P = 0.2 MPa, friction path S = 3 km) are determined for the coating.

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Section: Resultsmentioning

confidence: 99%

“…at τ a >> τ k there is no transfer from an anode to a cathode, but a counter-transfer of material is possible [25,26].…”

Section: Resultsmentioning

confidence: 99%

Properties of AlB$_{12}$–Al Electric Spark Coatings on D1 Aluminium Alloy

Umanskyi¹,

Стороженко²,

Shelud’ko³

et al. 2021

Metallofiz. Noveishie Tekhnol.

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“…The ESD technique utilizes the pulsed spark discharge between the metal substrate and the electrode, enabling the electrode material to melt and infiltrate into the surface layer of the metal substrate under high temperature (5 × 10 3 ~2 × 10 4 • C) and high pressure, forming a surface-alloyed deposition layer with special properties and metallurgical bonding to the substrate [25,26]. This treatment optimizes the physicochemical properties of the substrate surface and improves the hardness, wear resistance, and corrosion resistance of the original substrate material to a certain extent [27]. Figure 1 illustrates the working principle of the ESD technique.…”

Section: Principle Of Electrospark Deposition Technologymentioning

confidence: 99%

Research Progress in Electrospark Deposition Coatings on Titanium Alloy Surfaces: A Short Review

Wang,

Zhang,

Dai

et al. 2023

Coatings

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The development process of electrospark deposition (ESD) technology is reviewed, and the principles and differences of ESD technology are discussed in this review. Based on the research status regarding the ESD of titanium alloys, the promotion effect of ESD technology on wear resistance, corrosion resistance, oxidation resistance at high temperatures, and the biocompatibility of titanium alloys was elaborated on. For example, with the use of ESD technology to prepare Ti–Al, TiN, Ni–Cr, and other hardening coatings with high hardness, the maximum hardness of the deposited layer is six times higher than that of the substrate material, which greatly reduces the loss of the material surface in the process of friction in service, and has a high wear–resistance effect. The preparation of a single–phase lamellar coating is more beneficial for improving the oxidation resistance of the substrate. Carbide and a nano–porous coating can effectively enhance the bone integration ability of implants and promote biocompatibility. The application of ESD technology in the surface modification of titanium alloys is reviewed in detail. Finally, the development direction of ESD technology for titanium alloys is proposed.

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“…The method utilises an exothermic reaction initiated by an electric discharge within an inter-electrode space. The most promising results were obtained using SHS-produced tungsten-free hard alloy electrodes, such as TiC–Cr 3 C 2 –Ni, TiC–Ni, TiC–Ni, TiC–NiAl, TiC–Ti 3 AlC 2 , TiB 2 –TiAl, (Ti, Zr)C, et al [320,366]. It was found that the addition of refractory nano-powders (ZrO 2 , Al 2 O 3 , NbC, Si 3 N 4 , W, Mo, WC, WC–Co, and diamond) into an initial SHS mixture significantly modified the structure of electrode material and improved coating characteristics [367,368].…”

Section: Shs In Surface Engineeringmentioning

confidence: 99%

Self-propagating high-temperature synthesis of advanced materials and coatings

Левашов

Mukas'yan

Rogachev

et al. 2016

International Materials Reviews

Self Cite

316

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Self-propagating high-temperature synthesis (SHS) or combustion synthesis (CS) is a rapidly developing research area. SHS materials are being used in various fields, including mechanical and chemical engineering, medical and bioscience, aerospace and nuclear industries. The goal of the present paper is to provide a comprehensive state-of-the-art review and to analyse a critical mass of knowledge in the field of SHS materials and coatings. We also briefly discuss the history and scientific foundations of SHS along with an overview of the technological aspects for synthesis of different materials, including powders, ceramics, metal-ceramics, intermetallides, and composite materials. Application of CS in the field of surface engineering is also discussed focusing on two main routes for applying SHS to coating deposition: (i) single-step formation of the desired coatings and (ii) use of SHSderived powders, targets or electrodes in the coating deposition processes.

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On the application of dispersion-hardened SHS electrode materials based on (Ti, Zr)C carbide using electrospark deposition

Cited by 7 publications

References 6 publications

Properties of AlB$_{12}$–Al Electric Spark Coatings on D1 Aluminium Alloy

Properties of AlB$_{12}$–Al Electric Spark Coatings on D1 Aluminium Alloy

Research Progress in Electrospark Deposition Coatings on Titanium Alloy Surfaces: A Short Review

Self-propagating high-temperature synthesis of advanced materials and coatings

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