The parameters optimization and abrasion wear mechanism of liquid fuel HVOF sprayed bimodal WC–12Co coating

Wang, Qun; Chen, Zhenhua; Li, Luoxing; Yang, Guibing

doi:10.1016/j.surfcoat.2011.09.071

Cited by 77 publications

(24 citation statements)

References 17 publications

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“…With the feed rate decreasing, the molten degree of spray particles increased, which resulted in the increase of hardness and the decrease of porosity. Meanwhile, the total particles deposited on the substrate decreased and it resulted in the decrease of the per-pass thickness [11]. So, in the present study, the coating deposited at a powder feed rate of 33.7 g/min possesses optimal basic properties.…”

Section: Mechanical Propertiesmentioning

confidence: 56%

“…Research of Qun Wang et al [11] illustrated that change of the spraying parameters showed little effect on the phase composition of the WC-12 Co coatings but had a great influence on other performances such as hardness, porosity, fracture toughness, and the per-pass thickness of coatings. It also concluded that the sequences of importance of spray parameters on the performances of coatings are as follows: kerosene flux > spray distance > feed rate > oxygen flux for hardness; spray distance > kerosene flux > feed rate > oxygen flux for porosity; oxygen flux > kerosene flux > feed rate > spray distance for fracture toughness; and feed rate > spray distance > oxygen flux > kerosene flux for per-pass thickness.…”

Section: Introductionmentioning

confidence: 99%

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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: Mechanical Propertiesmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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

et al. 2017

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“…14 (the data comes from both this study and literature). Compared to the HVOF-sprayed WC-Co coatings (and even newly developed warm sprayed coatings) [59][60][61][62], the cold-sprayed WC-(nanoWC-Co) presents obvious higher hardness and toughness. For the cold-sprayed WC-(nanoWC-Co), the further increase in toughness during heat treatment contributes to a higher wear resistance, although the hardness tends to decrease a little.…”

Section: Strengthening Mechanism Of Wear Performancementioning

confidence: 99%

Mechanical property and wear performance dependence on processing condition for cold-sprayed WC-(nanoWC-Co)

Yang

Gao

2015

Applied Surface Science

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“…Among all the thermal spraying approaches, HVOF has high flame velocity and moderate flame temperature, which can minimize the decarburization of WC to a low level. Therefore, HVOF is an ideal method to deposit micro-nano WC-CoCr cermet coatings [24,25].…”

Section: Introductionmentioning

confidence: 99%

Structure of Micro-nano WC-10Co4Cr Coating and Cavitation Erosion Resistance in NaCl Solution

Ding

Cheng

Yuan

et al. 2017

Chin. J. Mech. Eng.

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Cavitation erosion (CE) is the predominant cause for the failure of overflow components in fluid machinery. Advanced coatings have provided an effective solution to cavitation erosion due to the rapid development of surface engineering techniques. However, the influence of coating structures on CE resistance has not been systematically studied. To better understand their relationship, micro-nano and conventional WC-10Co4Cr cermet coatings are deposited by high velocity oxygen fuel spraying(HVOF), and their microstructures are analyzed by OM, SEM and XRD. Meanwhile, characterizations of mechanical and electrochemical properties of the coatings are carried out, as well as the coatings' resistance to CE in 3.5 wt % NaCl solution, and the cavitation mechanisms are explored. Results show that micro-nano WC-10Co4Cr coating possesses dense microstructure, excellent mechanical and electrochemical properties, with very low porosity of 0.26 ± 0.07% and extraordinary fracture toughness of 5.58 ± 0.51 MPaÁm 1/2 . Moreover, the CE resistance of micro-nano coating is enhanced above 50% than conventional coating at the steady CE period in 3.5 wt % NaCl solution. The superior CE resistance of micronano WC-10Co4Cr coating may originate from the unique micro-nano structure and properties, which can effectively obstruct the formation and propagation of CE crack. Thus, a new method is proposed to enhance the CE resistance of WC-10Co4Cr coating by manipulating the microstructure.

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The parameters optimization and abrasion wear mechanism of liquid fuel HVOF sprayed bimodal WC–12Co coating

Cited by 77 publications

References 17 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

Mechanical property and wear performance dependence on processing condition for cold-sprayed WC-(nanoWC-Co)

Structure of Micro-nano WC-10Co4Cr Coating and Cavitation Erosion Resistance in NaCl Solution

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