Wear resistance of Fe-based amorphous coatings prepared by AC-HVAF and HVOF

R., H.; Li, J. W.; Jiao, Jin; Chang, Chuntao; Wang, G.; Shen, Jun; Wang, X. M.; Li, R. W.

doi:10.1080/02670836.2016.1160195

Cited by 44 publications

(19 citation statements)

References 30 publications

(56 reference statements)

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“…The average roughness of uncoated mild steel, SS202, and SS304 is observed as 2.45, 1.35, and 1.38 µm, whereas the values were 4.89, 4.63, and 4.58 µm after deposit coating. The investigators suggested that cutting, fracture, and abrasion are the major modes of erosion wear mechanisms that are relevant to slurry pipelines [2,3,13,14]. The eroded images of WC-10 Co 4 Cr-coated mild steel, SS202, and SS304 with EDS (energy dispersive spectroscopy) are shown in Figures 6-8.…”

Section: Visual Examination Of Eroded Coated Surfacesmentioning

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: Visual Examination Of Eroded Coated Surfacesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Kumar

Singh

et al. 2017

Coatings

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“…Amorphous alloys have attracted wide attention because of their excellent mechanical properties (Sharma et al , 2016; Inoue and Takeuchi, 2011). Compared to the crystalline alloys, amorphous alloys with no defects of dislocations and grain boundaries represent features of high hardness, excellent wear resistance and corrosion resistance (Liu et al , 2021; Ma et al , 2017; Pang et al , 2002). However, it is difficult to prepare large-size bulk amorphous alloys because of the limitation of preparation method in size and the performance of high brittleness (Liu and Zhang, 2014; Wang et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Wei

Ban

et al. 2022

ACMM

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Purpose The purpose of this paper is to investigate the effect of nano-alumina sealant sealing treatment on corrosion behavior of the Fe-based amorphous coatings deposited on 304 stainless steel plates by atmospheric plasma spraying (APS) with different hydrogen flow rates. Design/methodology/approach The surface morphology and microstructure of the unsealed and sealed coatings were characterized by scanning electron microscopy and X-ray diffraction. The corrosion resistance of the coatings was investigated by potentiodynamic polarization test and electrochemical impedance spectroscopy experiment in 3.5 Wt.% NaCl solution. Findings Results show that a few microcracks and pores exist in the as-sprayed Fe-based amorphous coatings. The pores on the surface of the coatings after sealing treatment have been filled with nano-alumina sealant, which can effectively prevent corrosive medium from entering into coatings. Electrochemical tests results show that the corrosion resistance of the coatings before sealing treatment decreases with the increase of hydrogen flow rate and is significantly improved by sealing treatment. Originality/value The effect of nano-alumina sealant sealing treatment on corrosion resistance of APS-sprayed Fe-based amorphous coatings is revealed. The corrosion resistance of the as-sprayed Fe-based amorphous coating can be significantly improved by nano-alumina sealant sealing treatment because of the blocking effect of nano-alumina sealant on corrosive medium, which confirms that the application of nano-alumina sealant sealing treatment is of a practical option to improve corrosion resistance of as-sprayed thermal sprayed coatings.

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“…Ma et al [9] and Matteo Federici et al [10] report that among the various thermal spraying techniques, the HVOF process is known for its high kinetic energy value and relatively low flame temperature. This favors the formation of an amorphous structure with decreased porosity and oxide content, resulting in better resistance to wear, corrosion and adhesion of coatings [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Comparison of abrasive wear by rice husk of an HVOF WC–Co–Cr-based coating and an electric arc sprayed coating based on Fe–Cr–B–Si

Panziera

Flores

Tier

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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The effect of abrasive wear is particularly relevant in the industrial areas of agriculture, mining, mineral processing and earth moving. Wear problems occur in mills and silos where grain is stored and moved in large quantities through the process of agro-processing. Machines and equipment that work under direct contact with the grain suffer from severe three-body abrasive wear from the rice husks. The main objective of this study was to investigate the abrasive wear behavior of an Fe-29Cr-4B-1.75Si coating sprayed by electric arc and a WC-10Co-4Cr coating applied by the high-velocity oxygen fuel (HVOF) methods. Both coatings used SAE 1016 carbon steel as the substrate. A dry-sand, rubber wheel abrasion test was performed using ASTM G65 standard that employs sand as an abradant. It was compared to a variation on that test that employed rice husk as the abradant. The coatings were characterized by scanning electron microscopy, X-ray diffraction and microhardness. The microhardness values for coatings and substrate were measured using a microhardness Vickers tester equipped with a diamond pyramid indenter. The results showed that the mechanisms of wear differ by the change of abrasive, characterizing a wear by scratches when using the sand, and by microcutting, ledges and cracks when the rice husk is used as an abradant. The WC-10Co-4Cr deposition by HVOF showed satisfactory performance under abrasive wear with rice husk demonstrating a potential for application in agricultural implements working in the rice culture.

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Wear resistance of Fe-based amorphous coatings prepared by AC-HVAF and HVOF

Cited by 44 publications

References 30 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

Influence of nano-alumina sealing treatment on corrosion resistance of Fe-based amorphous coatings

Comparison of abrasive wear by rice husk of an HVOF WC–Co–Cr-based coating and an electric arc sprayed coating based on Fe–Cr–B–Si

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