Structure and wear behaviour of HVOF sprayed Cr3C2–NiCr and WC–Co coatings

Sahraoui, Tahar; Fenineche, N.; Montavon, Ghislain; Coddet, Christian

doi:10.1016/s0261-3069(03)00059-1

Cited by 137 publications

(61 citation statements)

References 3 publications

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“…Therefore, it was indicated that nickel-chromium alloy and some Cr 3 C 2 carbide were melt and some amorphous phase formed. The similar results were also reported in those previous studies [18,19]. Mohanty et al [20] observed the transformation of Cr 3 C 2 phase to Cr 23 C 6 phase while spraying Cr 3 C 2 -NiCr powder by Jet Kote technique.…”

Section: Phase Structures Of Powder and Coatingssupporting

confidence: 89%

Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

et al. 2017

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Abstract:In this work, the Cr 3 C 2 -25% NiCr powder was deposited on stainless steel with different combustion pressures and powder feed rates using HVOF technique. The microstructure, porosity, micro-hardness, indentation fracture toughness, adhesion strength, and wear resistance at 500 • C of the coatings were investigated. The results showed that HVOF sprayed Cr 3 C 2 -25% NiCr coatings possessed low porosity, high micro-hardness, and enough adhesion strength. The powder feed rate had obvious effect on porosity, micro-hardness and indention fracture toughness of the coatings, and the coating sprayed under the powder feed rate of 33.5 g/min possessed the optimal performance. The wear tests illustrated that the HVOF sprayed Cr 3 C 2 -25NiCr coating possessed good wear resistance at the temperature of 500 • C, in which the coating sprayed at the powder feed rate of 33.5 g/min had the best wear resistance due to its dense structure and enough fracture toughness.

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Section: Phase Structures Of Powder and Coatingssupporting

confidence: 89%

Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

et al. 2017

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“…These conditions have successfully limited the decomposition process during coating. Similar peaks have also been observed by Stewart et al [24] and Sahraoui et al [25]. SEM/EDAX analysis for bare AISI H13 steel after air oxidation shows the presence of distorted grains, and the presence of iron oxide in the surface scale is observed (Figure 12(a)).…”

Section: Resultssupporting

confidence: 84%

Studies on Influence of WC on Scratch and Hot Corrosion Resistance of AISI H13 Steel by Flame-Sprayed Coatings of EWAC 1001

Kumar

Arivazhagan

2011

ISRN Materials Science

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This paper presents the experimental investigations carried out to study the influence of addition of Tungsten Carbide (WC) on the scratch resistance and high-temperature corrosion behaviour of flame-sprayed EWAC 1001 coatings on the AISI H13 steel substrate. The improvement in properties was analysed by conducting various tests such as microstructural analysis, microhardness, and scratch tests. Moreover, high-temperature corrosion tests were carried out on the coated as well as uncoated AISI H13 steel by exposing the material to air oxidation at 700• C under cyclic conditions. The thermogravimetric technique was used to establish kinetics of corrosion, whereas XRD and SEM/EDAX techniques which were used to analyze the AISI H13 steel with EWAC 1001 coating containing WC showed better resistance to high-temperature corrosion as compared to that of uncoated AISI H13 steel. It is observed that the formation of Cr 2 O 3 , NiO, and NiCr 2 O 4 contributes to the enhancement of high temperature corrosion resistance of the coating. The formation of unprotective Fe 2 O 3 oxide leads to intense spalling and peeling of the scales in the uncoated material. The results presented in this paper would be beneficial for improving properties of tools used in the die-casting industry.

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“…Consequently, the need arises to employ denser coatings which degrade less due to their more closely packed structure [27]. The porosity of the Cr 3 C 2 -NiCr coatings as reported by authors lies in the range of 1-3.5 % (Table 1), which was found to be useful in developing hot corrosion resistance in boiler tube steel [28,29,30]. The low value of porosity might be due to high kinetic energy of the powder particles.…”

Section: Characterization Of 75cr 3 C 2 -25nicr Coatingsmentioning

confidence: 92%

Characterisation and Corrosion-Erosion Behaviour of Carbide based Thermal Spray Coatings

Chatha¹,

Sidhu²,

Sidhu³

2012

JMMCE

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Structure and wear behaviour of HVOF sprayed Cr3C2–NiCr and WC–Co coatings

Cited by 137 publications

References 3 publications

Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

Influence of Process Parameters on High Velocity Oxy-Fuel Sprayed Cr3C2-25%NiCr Coatings

Studies on Influence of WC on Scratch and Hot Corrosion Resistance of AISI H13 Steel by Flame-Sprayed Coatings of EWAC 1001

Characterisation and Corrosion-Erosion Behaviour of Carbide based Thermal Spray Coatings

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