Influence of diameter of the cored wires on abrasive wear resistance of arc sprayed coatings

Pokhmurska, H.; Студент, М. М.; Paczkowski, Gerd; Holovchuk, М. Ya.; Chumalo, H. V.; Hvozdetskyi, V. M.; Schuberth, Stefan

doi:10.1088/1757-899x/1147/1/012033

Cited by 4 publications

(3 citation statements)

References 13 publications

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“…Pokhmurska et al [ 31 ] showed that Cr 3 C 2 dispersed in the solid solution can effectively enhance the hardness of the coating. Figure 5 compares the average surface and cross-sectional hardness values of the cladding layer, revealing that the hardness of the composite coating generally increases with the increase in Cr 3 C 2 content, reaching a maximum of 825.4 HV3.…”

Section: Resultsmentioning

confidence: 99%

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Geng

Zhang²,

Jun

et al. 2023

Materials

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Cr3C2-modified NiCr–TiC composite coatings were prepared using the plasma spraying technique for different Cr3C2 contents on the microstructure and the properties of the Ni-based TiC cladding layer were investigated. The microstructures of the coatings were characterized using scanning electron microscopy, and the friction and wear performance of the coating was evaluated by the wear tests. The results revealed that the surfaces of the Cr3C2-modified NiCr–TiC composite coatings with varying Cr3C2 contents were dense and smooth. TiC was uniformly distributed throughout the entire coating, forming a gradient interface between the binder phase of the Ni-based alloy and the hard phase of TiC. At high temperatures, Cr3C2 decomposes, with some chromium diffusing and forming complex carbides around TiC, some chromium solubilizes with Fe, Ni, and other elements. An increase in chromium carbide content leads to an upward trend in hardness. The measured hardness of the coatings ranged from 600 to 850 HV3 and tended to increase with increasing Cr3C2 content. When the mass fraction of Cr3C2 reached 30%, the hardness increased to 850 HV3, and the cracks and defects were observed in the coating, resulting in a wear resistance decline.

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Section: Resultsmentioning

confidence: 99%

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Geng

Zhang²,

Jun

et al. 2023

Materials

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“…The workability of ASCs is largely determined by their hardness, cohesive strength and level of residual stresses. The porosity of coatings also affects their mechanical characteristics [28]. The deposition modes of coating (current values, distance to the sprayed surface) and the chemical composition of the CW charge have little effect on their porosity.…”

Section: Resultsmentioning

confidence: 99%

“…34 V. CW was sprayed with a flow of compressed air at a pressure of 0.6 MPa from a distance of 150 mm. On the example of a number of CWs with fundamentally different charge compositions, the spraying mode of coatings was optimized [28]. This mode was actually used in this article.…”

Section: Depositionmentioning

confidence: 99%

Mechanical Properties of Arc Coatings Sprayed with Cored Wires with Different Charge Compositions

et al. 2022

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The mechanical properties (hardness, cohesion, and residual stresses) of arc coatings designed for operation under conditions of boundary friction and corrosive-abrasive wear are analyzed. The coatings were formed by arc spraying cored wires (CW) with different charge compositions (the content of carbon, aluminum, and boron in CW charge varied). It is shown that the hardness of the coatings increases with an increase in the carbon content in them up to 1 wt. %, and then decreased due to an increase in the content of residual austenite in their structure. The level of residual stresses of the first kind in such coatings increased by four times with an increase in the carbon content to 2 wt. %. The hardness of the coatings and the level of residual tensile stresses in them also increase with a decrease in the aluminum content in them. In this case, the cohesive strength of the coatings increased due to the implementation of aluminothermic reactions in the droplets of the CW melt during their flight and crystallization on the sprayed surfaces. However, then, with an increase in the aluminum content in the coatings of more than 2 wt. %, their cohesive strength decreased. The level of residual tensile stresses in coatings with a high content of retained austenite decreased after heat treatment (tempering) of the specimens. Sometimes, after tempering, these stresses even transformed into residual compressive stresses (in particular, under using CW C1.4Cr14Ni2). At the same time, the tempering of specimens with a predominance of ferrite in the coating structure increased the level of residual tensile stresses in them, which is due to the precipitation of finely dispersed carbides or borides. It has been shown that the addition of boron-containing components (ferrochromium-boron, chromium-boron) to the composition of the CW charge leads to a significant increase in the hardness of the coatings. Thus, an increase in the boron content in coatings from 0 to 4 wt. % leads to an increase in their hardness from 320 HV to 1060 HV. However, this is accompanied by an increase in tensile residual stresses in the coatings and a decrease in their cohesive strength.

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Optimizing Parameters of Arc-Sprayed Fe-Based Coatings Using the Response Surface Methodology

et al. 2023

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Influence of diameter of the cored wires on abrasive wear resistance of arc sprayed coatings

Cited by 4 publications

References 13 publications

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Mechanical Properties of Arc Coatings Sprayed with Cored Wires with Different Charge Compositions

Optimizing Parameters of Arc-Sprayed Fe-Based Coatings Using the Response Surface Methodology

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