HVOF sprayed WC-CoCr coatings on aluminum: tensile and tribological properties

Koutsomichalis, Angelos; Vardavoulias, M.; Vaxevanidis, Nikolaos M.

doi:10.1088/1757-899x/174/1/012062

Cited by 12 publications

(12 citation statements)

References 30 publications

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“…The morphology, microstructure, and particle sizes of carbides in the obtained detonation coatings are comparable with the ones of coatings obtained through HVOF [ 15 , 16 , 17 , 18 , 19 , 21 ]. However, in the detonation spray coating the particle distribution is seems to be more uniform.…”

Section: Resultssupporting

confidence: 69%

“…In addition to the presence WC phase small amounts W 2 C and Co 3 W 3 C phases were detected. The possibility of the formation of these phases in a hard cermet coating is also indicated in the works [ 15 , 16 , 17 , 21 , 30 ].…”

Section: Resultsmentioning

confidence: 97%

“…These properties of aluminum alloys can be enhanced by surface hardening performed by micro-arc oxidation (MAO), plasma electrolytic oxidation (PEO) and deposition of hard materials by electroplating [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 ], or by thermal spraying of hard coatings based on tungsten, titanium, and tantalum carbides with metal bond. The most common method for the thermal spraying of WC-based coatings applied in industry is the High Velocity Oxygen Fuel (HVOF) process [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. Another thermal spray method capable to produce hard cermet coatings is the detonation spray [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Properties of WC–10%Co–4%Cr Detonation Spray Coating Deposited on the Al–4%Cu–1%Mg Alloy

et al. 2021

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One of the methods of local improvement of the wear resistance of aluminum alloy parts is the deposition of hard tungsten carbide-based coatings on the surfaces subjected to intense external influence. This paper is devoted to the characterization of the WC–10Co–4Cr (wt.%) coating deposited on an Al–4Cu–1Mg (wt.%) alloy by the detonation spray method. In comparison with the common thermal spray techniques like High Velocity Oxygen Fuel (HVOF) or Atmospheric Plasma Spraying (APS), the heat input delivered to the substrate during detonation spray is significantly lower, that is especially important in case of coating deposition on aluminum alloys. The paper presents the results of morphology investigation, microstructure, phase composition, microhardness, and cohesive strength of deposited carbide-based detonation spray coating. Results showed that the coating has a porosity less than 0.5% and the carbide grain refinement down to the submicron size during coating deposition was detected. According to the investigation, the variation of spraying distance from 270 to 230 mm does not influence on the coating microstructure and composition.

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Section: Resultssupporting

confidence: 69%

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Properties of WC–10%Co–4%Cr Detonation Spray Coating Deposited on the Al–4%Cu–1%Mg Alloy

et al. 2021

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“…However, the added metal resulted in the decreasing of properties like hardness, resistance, operating temperature [1]. WC coating had various applications in many different industries because of protection it provided against the wear at various different temperatures [9]. Tungsten carbide coating found an important place in the various different industries in fight against corrosion because it provides a high hardness, high melting point, low surface roughness to the material substrate.…”

Section: Tunsten Carbide "Wc" Coatingsmentioning

confidence: 99%

“…HVOF spray method shown to have decreased decomposition of WC material because of high impact velocities and fine grain sizes of powder. During decomposition, WC was decomposed to W2C which led to the decrease in hardness of coating and depleting wear resistance [9]. Coating characteristics were also affected by the spray system and the spray parameters [10].…”

Section: Factors Affecting Properties Of Coatingsmentioning

confidence: 99%

Tribological Study of HVOF Sprayed Tungsten Carbide Coated Stainless Steel

Kumar¹,

Singh²,

Singari³

2020

IJAPIE

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Corrosion and Wear, or a combination of both, are the main causes of degradation of metals used in the various industrial sectors. Degradation of the metals can be slowed down by adding a layer of resistant coating on the metal surface. This coating separates the base metal from a corrosive environment, reduces wear, and improves the appearance of the metal. The workpiece after coating becomes a composite that has properties far better than the substrate alone. There are various coating techniques, HVOF is one of the most important and widely used processes to protect the metals from wear, corrosion by providing hard and dense coatings. WC coating done by the high-velocity oxy-fuel (HVOF) spray method is the widely used method for providing a layer of corrosive resistance to a wide range of materials that are used in many different industries. In this study, Tungsten carbide (WC-12CO) Coating, HVOF Spray method was studied in great detail. Tungsten Carbide coating was done on a SUS400 Stainless steel substrate using HVOF Spray Process. An, Experiment was done to analyze the various effect of different parameters namely, oxygen rate, propane (fuel) rate, powder rate, spray distance on hardness, and surface roughness of a SUS 400 Stainless Steel substrate. Process optimization was done by using Taguchi and ANOVA methods. It was found that achieving maximum hardness was greatly dependent on propane (fuel) rate followed by powder rate, spray distance, and oxygen rate. The hardness decreases with the increasing fuel rate. And, achieving minimum surface roughness was greatly dependent on spray distance followed by oxygen rate, propane (fuel) rate, powder rate. Surface Roughness increases with increasing spray distance.

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