Influence of Modifying Nanoadditives on the Properties of a Multilayer Composite Coating Obtained by Laser Surfacing

Черепанов, А. Н.; Orishich, A. M.; Овчаренко, В. Е.; Маликов, А. Г.; Drozdov, V. O.; Pshenichnikov, Anton

doi:10.1134/s0031918x19010022

Cited by 9 publications

(6 citation statements)

References 6 publications

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“…When studying the structure and microstructure of the WC/INC625 composite material obtained by laser surfacing, it was found that the volume content of WC in the composite is less than stated [23][24][25][26]. It is likely that the tungsten carbide particles were dispersed to a greater extent during the feeding process than the nickel alloy particles.…”

Section: The Results Of X-ray Analysismentioning

confidence: 99%

“…The size of the matrix powder is 63-100 microns [21][22][23][24][25], and its chemical composition is presented in Table 1. Method of preparation: plasma melting and centrifugal spraying [20][21][22]26]. Melting range: 1310…1360°C.…”

Section: Methodology and Materials Of The Experimentsmentioning

confidence: 99%

“…The chemical composition of this powder is presented in Table 2. The method of obtaining this powder is melting and grinding, and then spheroidization using plasma compaction [25,26]. Powder hardness: 2700… 3100 HV0.1.…”

Section: Methodology and Materials Of The Experimentsmentioning

confidence: 99%

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Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Zhavoronkova

Alekseev²,

Bazaleeva³

et al. 2023

E3S Web of Conf.

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Single laser tracks of the WC/INC625 composition in a wide range of concentrations of the carbide phase obtained by laser surfacing at various values of the technological parameters of the process are studied. Based on the results of quantitative metallographic analysis, promising compositions of coatings were selected and intervals of technological parameters were established. The modes allowing to obtain objects without cracks, with minimal porosity and a given geometry of the laser track cross-section were determined.

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Section: The Results Of X-ray Analysismentioning

confidence: 99%

Section: Methodology and Materials Of The Experimentsmentioning

confidence: 99%

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Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Zhavoronkova

Alekseev²,

Bazaleeva³

et al. 2023

E3S Web of Conf.

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“…There are various ways to apply NiCrBSi coatings and composite coatings based on them. Laser cladding, the use of which makes it possible to obtain homogeneous layers with low mixing with the substrate, is a modern way of their formation [1,11,12].…”

Section: Introductionmentioning

confidence: 99%

Features of frictional treatment of the composite NiCrBSi-Cr3C2 laser clad coating

et al. 2020

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The authors conducted a comparative analysis of the effectiveness of frictional treatment with a sliding indenter of a NiCrBSi coating and a composite coating formed by laser cladding of a powder mixture of 85 wt.% NiCrBSi and 15 wt.% Cr 3 C 2. The criteria were intensive strain hardening, favorable compressive stresses, and low surface roughness. Frictional treatment with an indenter made of cubic boron nitride at a load of 350 N provides less intense deformational hardening of the NiCrBSi-Cr 3 C 2 coating (microhardness growth from 900 to 940 HV 0.025) than the NiCrBSi coating (from 570 to 850 HV 0.025). This is due to the significantly higher initial hardness of the composite coating, because its structure, in addition to the phases characteristic of the NiCrBSi coating, contains large primary Cr 3 C 2 carbides, which did not dissolve during cladding, as well as elongated Cr 23 C 6 carbides, precipitated during cooling from a solid solution supersaturated with chromium as a result of the partial dissolution of Cr 3 C 2 carbides during cladding. Frictional treatment also results in a lower level of compressive residual stresses (−250 MPa) on the composite coating surface than on the NiCrBSi coating surface (−390 MPa). In contrast to frictional treatment of the NiCrBSi coating, when a smoothed surface with a nano-roughness is formed (R a = 60 nm), frictional treatment of the composite coating forms a surface with a higher roughness (R a = 310 nm) due to the creation on the surface of supporting "island frame" of large Cr 3 C 2 chromium carbides protruding 2-5 μm.

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“…Therefore, the choice of pulse energy or pulse power density depends on the melting temperature of the powder, as well as its reflection coefficient, thermal conductivity, and dispersion. For example, it is necessary to increase the given pulse energy for refractory materials, but the scanning fre-quency of the surface under treatment should be also reduced in this case [1][2][3]. It is known that surface alloying of steels and alloys with titanium, tantalum, tungsten, and vanadium carbides can significantly increase their wear resistance [4][5][6].…”

mentioning

confidence: 99%

Changes in the Surface Characteristics of 12Kh18N10T Steel after Laser Modification in a Graphite Paste Layer Containing Titanium Dioxide Nanoparticles

Proskuryakov

Rodionov

2021

Tech. Phys. Lett.

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An experimental study of the laser modification of the surface of 12Kh18N10T stainless steel in a layer of graphite paste and nanodispersed titanium dioxide powder (anatase) has been performed. It is found that a microheterogeneous modifying layer is formed on the surface of the samples as a result of pulsed laser treatment. The surface is characterized by increased microhardness and microroughness parameters, which largely depend on the pulse voltage. The formation of fine particles with sizes ranging from 100 to 300 nm is observed in the diffusion layer of the specimens.

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Influence of Modifying Nanoadditives on the Properties of a Multilayer Composite Coating Obtained by Laser Surfacing

Cited by 9 publications

References 6 publications

Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Optimization of laser surfacing technological parameters to composite coatings WC/INC625

Features of frictional treatment of the composite NiCrBSi-Cr3C2 laser clad coating

Changes in the Surface Characteristics of 12Kh18N10T Steel after Laser Modification in a Graphite Paste Layer Containing Titanium Dioxide Nanoparticles

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