Effect of WC particles with different shapes during plasma spray on the properties of Fe-based composites coatings

Shi, Yun; Du, Xiaodong; Zhuang, Pengcheng; Zhang, Hao

doi:10.1088/2053-1591/ab52a3

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Plasma spray welding can use variety alloy powders according to specific needs of repairing the workpiece [7][8][9]. The metallurgical melting between the powder and the base material happened during the spray welding process.…”

Section: Introductionmentioning

confidence: 99%

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Li,

Zhou,

Meng

et al. 2023

Mater. Res. Express

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In this paper, the Fe-Cr-Ni-Si powder was used in a 3D plasma spray welding machine to perform spray welding repair tests on continuous casting segmented rollers for service life improvement. The phase composition, hardness distribution, abrasion resistance and thermal stability of the spray welding layer were analyzed. Results indicated that the spray welding layer produced by 160 A welding current was more uniform and was with finer organization. The main phase zone was a single γ-Fe and the fusion zone was metallurgically combined with the base metal in a planar crystal manner. The hardness of the spray welding layer was the maximum when the welding current was 160 A. The abrasion resistance for each position of the spray welding layer was uniform. The γ-Fe phase zone decreased and the α-Fe phase zone increased with reduction of average hardness after the thermal stability test. In industrial tests, the optimum spray welding parameters were verified and the service life of the continuous casting segmented rollers with spray welding was 2 longer than rollers using surfacing welding process.

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Section: Introductionmentioning

confidence: 99%

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Li,

Zhou,

Meng

et al. 2023

Mater. Res. Express

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“…Они широко используется в механических деталях, подверженных абразивному воздействию [1]. Частицы карбида вольфрама обладают хорошими физическими свойствами, такими как высокая температура плавления, высокая твердость, стабильность и хорошая смачиваемость, поэтому их часто используют в качестве армирующей фазы [2]. В качестве материала матрицы, обычно используют сплавы на основе железа, никеля и кобальта [3 -5].…”

Section: Introductionunclassified

Hardening of FeCrMoWCBSi amorphous electrospark coatings with tungsten carbide

Бурков

Kulik

2021

Lett. Mater.

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A new direction in the development of metal-matrix coatings are composites based on an amorphous matrix with reinforcing ceramic additives. In this work, composite coatings were prepared by electrospark treatment of AISI 1045 in a mixture of iron granules with a multicomponent composition CrMoWCBSi and the addition of tungsten carbide powder. According to X-ray analysis, with an increase in the concentration of WC in the mixture of granules up to 1.2 vol.%, the content of the WC phase in the coating composition increased. In addition, the X-ray analysis showed metallic tungsten, which is a product of the partial dissolution of WC particles in the iron melt. In the microstructure of the coatings, inclusions of tungsten carbide with a diameter of 1.8 ± 0.9 μm were observed. The oxidation resistance of the coatings at a temperature of 700°C decreased monotonically with an increase of WC additive in the mixture of granules. The microhardness of the coatings with tungsten carbide was in the range from 814 to 1118 HV, which is higher compared to a completely amorphous sample (743 HV). The average values of the coating friction coefficient with WC ranged from 0.60 to 0.67, which is 30 % lower than that of an amorphous coating. The wear rate of coatings with tungsten carbide was in the range of 0.5 -1.1×10 −5 mm 3 / Nm, which is lower than that of the sample without WC (1.8 ×10 −5 mm 3 / Nm). The optimal value of the addition of WC powder in the mixture of granules during the deposition of the coatings for tribotechnical applications is 1.2 vol.%. Thus, the use of amorphous coatings reinforced with tungsten carbide makes it possible to reduce the wear of steel 45 by up to 8 times.

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Production of ultrafine-grained spherical β-WC-W₂C-Co microparticles by electro discharge erosion of WC-15Co alloy in glycerol and their solutions

Михайленко

Николенко

Vlasova

et al. 2020

Mater. Res. Express

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The present work is devoted to the study of the production of ultrafine-grained (UFG) spherical microparticles by electro discharge erosion (EDE) of the WC-15Co cemented carbide in glycerol, distilled water, and their solutions. Energy costs, productivity, particle size distribution, and morphological and chemical compositions of the obtained powders were studied. It was found that energy cost is reduced by 2.2 times when glycerol was used instead of water. The use of water reduces carbon content from 5.2% to 1.4%. The use of glycerol and its aqueous solutions reduces carbon loss and increases its content in the obtained powders from 3.2% to 6.1%. During SE, cobalt, carbon, and tungsten evaporate from spherical particles and crystallize in the form of ultrafine particles, which subsequently remain in suspension after sedimentation of spherical particles. Mass fractions of sedimented spherical particle fractions ranged from 75% to 82%. Cobalt and carbon content in the spherical particles obtained in glycerol decrease from 15% to 10% and from 5.2% t to 3.1% respectively. The particles consist of rounded carbide grains (β-WC and W2C) with a diameter of up to 500 nm, the space between which is filled with cobalt. Microhardness of the particles increased from 12.1 GPa (initial alloy) to 15.6 (EDE in water)—23.7 GPa (EDE in glycerol).

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Effect of WC particles with different shapes during plasma spray on the properties of Fe-based composites coatings

Cited by 4 publications

References 10 publications

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Hardening of FeCrMoWCBSi amorphous electrospark coatings with tungsten carbide

Production of ultrafine-grained spherical β-WC-W₂C-Co microparticles by electro discharge erosion of WC-15Co alloy in glycerol and their solutions

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Effect of WC particles with different shapes during plasma spray on the properties of Fe-based composites coatings

Cited by 4 publications

References 10 publications

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Research on microstructure and properties of 3D plasma spray welding repair layer of continuous casting segmented rollers

Hardening of FeCrMoWCBSi amorphous electrospark coatings with tungsten carbide

Production of ultrafine-grained spherical β-WC-W2C-Co microparticles by electro discharge erosion of WC-15Co alloy in glycerol and their solutions

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Product

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Production of ultrafine-grained spherical β-WC-W₂C-Co microparticles by electro discharge erosion of WC-15Co alloy in glycerol and their solutions