Recycled hardmetal-based powder composite coatings: optimisation of composition, structure and properties

Kulu, Priit; Käerdi, Helmo; Surženkov, Andrei; Tarbe, Riho; Veinthal, Renno; Goljandin, Dmitri; Žikin, Arkadi

doi:10.1504/ijmpt.2014.064038

Cited by 5 publications

(5 citation statements)

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“…Commercially available coating powder WC- 10 Co 4 Cr has been used in the present study to provide resistance against slurry erosion. Energy-dispersive spectroscopy (EDS) analysis of the coating powder confirms the presence of different elements in the powder.…”

Section: Coating Depositionmentioning

confidence: 99%

“…Some investigators have suggested that the erosion wear can be minimizing by using protective coatings on piping materials. These coatings can provide a hard layer of carbides, oxides, and nitrides of Cr, W, Al, and Ti [10,11]. The high-velocity oxy-fuel (HVOF) technique can be applied to deposit coatings with high cohesive strength and superior mechanical properties [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

“…These coatings can provide a hard layer of carbides, oxides, and nitrides of Cr, W, Al, and Ti [10,11]. The high-velocity oxy-fuel (HVOF) technique can be applied to deposit coatings with high cohesive strength and superior mechanical properties [10][11][12][13][14]. In the present work, erosion wear behavior of three piping materials, namely, mild steel, SS202, and SS304, have been analyzed with and without a HVOF-sprayed WC- 10 Co 4 Cr coating.…”

Section: Introductionmentioning

confidence: 99%

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Erosion Wear Investigation of HVOF Sprayed WC-10Co4Cr Coating on Slurry Pipeline Materials

Kumar

Singh

et al. 2017

Coatings

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Abstract:In the present work, erosion wear due to slurry mixture flow has been investigated using a slurry erosion pot tester. Erosion tests are conducted on three different slurry pipe materials, namely, mild steel, SS202, and SS304, to establish the influence of rotational speed, concentration, and time period. In order to increase erosion wear resistance, a high-velocity oxy-fuel (HVOF) coating technique is used to deposit a WC-10 Co 4 Cr coating on the surface of all piping materials. Experimental results show that rotational speed is a highly-influencing parameter for the erosion wear rate as compared to solid concentration, time duration, and weighted mean diameter. WC-10 Co 4 Cr HVOF coating improved the erosion resistance of piping materials up to 3.5 times. From experimental data, the exponents of solid concentration, velocity, and the size of particles are calculated for the empirical erosion wear equation. A functional equation of the erosion wear rate is developed. The predicted erosion wear is in agreement with the experimental data and found to be within a deviation of ±12%.

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Section: Coating Depositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Erosion Wear Investigation of HVOF Sprayed WC-10Co4Cr Coating on Slurry Pipeline Materials

Kumar

Singh

et al. 2017

Coatings

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“…Disintegrator milling is widely used in production process of thermal spray powders [1,3,[7][8][9][10]. However, avoiding disintegrator milling can shorten the production process and lower its cost [11].…”

Section: Introductionmentioning

confidence: 99%

Production of Thermal Spray Cr<sub>3</sub>C<sub>2</sub>-Ni Powders by Mechanically Activated Synthesis

Tkachivskyi

Juhani

Surženkov

et al. 2019

KEM

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The aim of this research was to optimize the mechanically activated synthesis (MAS) technology of the Cr3C2-Ni powder intended for thermal spraying. The MAS production route included ball milling for 72 h (ball-to-powder ratio 20:1) and sintering under 1075 °C in vacuum for 4 h. Sintered compact was crushed, classified by sieving to obtain the fraction suitable for thermal spraying (20–45 μm). The morphology and the phase composition of the powder were analyzed by a scanning electron microscope (SEM) and X-ray diffraction (XRD). The optimal Cr:C ratio found was 7:1. The powder had an equiaxial or a slightly elongated lamellar shape, Cr3C2 carbides in a single powder particle had an elongated shape. The principal phases in the optimized powder were Cr3C2, Cr7C3 and Ni (Cr) solid solution. Coatings from the manufactured powder were produced by the high velocity oxy-fuel (HVOF) spraying. The abrasive wear tests were carried out according to standard ASTM G65. The wear tests showed that the sprayed coatings from the experimental powder exhibited about five times higher wear rate at abrasive wear conditions than the coatings from the reference commercial powder.

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“…The preparation of composite coating is a process in which one or several kinds of insoluble solid particles so that the solid particles and the metal ions are co-deposited. Actually, it is a metal-based composite material (Kulu et al, 2014). Nanocomposite coating is obtained by adding nano solid particles in the plating solution and co-deposition with metal.…”

Section: Introductionmentioning

confidence: 99%

A predictive modelling of nanocomposite coating microhardness based on extremely randomised trees

Guo

Zhao

Xiaoniu

2019

IJMPT

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Nanocomposite coating is a coating made of particles whose sizes are of nanoscale. The microhardness of the coating is an importance parameter. Currently, experimental method is mainly adopted in the coating's microhardness and performance research, with high research cost and long time period. In this paper, the content of the nano-particles in the plating liquid, current density, duty ratio, addition of additives and ultrasonic power are set as inputs; the micro hardness of the nanocomposite coating is set as output. Extremely randomised trees (ERT) are used to establish a strong prediction model. The prediction performance is the ERT model is superior to that of the single models such as linear regression, back-propagation neural network and radial basis function neural network, etc. and other ensemble learning methods. ERT model can be used for predicting the microhardness of nanocomposite coating, providing an efficient and highly reliable method for new material performance prediction.

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Recycled hardmetal-based powder composite coatings: optimisation of composition, structure and properties

Cited by 5 publications

References 0 publications

Erosion Wear Investigation of HVOF Sprayed WC-10Co4Cr Coating on Slurry Pipeline Materials

Erosion Wear Investigation of HVOF Sprayed WC-10Co4Cr Coating on Slurry Pipeline Materials

Production of Thermal Spray Cr<sub>3</sub>C<sub>2</sub>-Ni Powders by Mechanically Activated Synthesis

A predictive modelling of nanocomposite coating microhardness based on extremely randomised trees

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