Mechanical properties of WC–Co coatings with different decarburization levels

Wu, Xu; Guo, Zhimeng; Wang, Hai Bin; Song, Xiaoyan

doi:10.1007/s12598-014-0257-8

Cited by 15 publications

(3 citation statements)

References 16 publications

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“…However, the oxidation of the coatings has an important role on wear behaviour. On one hand, oxidation leads to the loss of hard phases that decreases the hardness, elastic modulus, toughness and thus load-bearing capacity of coatings [23][24][25]; on the other hand, it produces oxides that inevitably affect the wear mechanism of the coatings.…”

Section: Wear Behaviour Of Wc-co Coatings At Different Temperatures Imentioning

confidence: 99%

Wear behaviour of WC–Co HVOF coatings at different temperatures in air and argon

Geng

Duan

et al. 2015

Wear

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Section: Wear Behaviour Of Wc-co Coatings At Different Temperatures Imentioning

confidence: 99%

Wear behaviour of WC–Co HVOF coatings at different temperatures in air and argon

Geng

Duan

et al. 2015

Wear

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“…Vanadium carbide (V 8 C 7 ) has very high melting point (2810°C), high mechanical hardness and good wear resistance [1][2][3][4]. Chromium carbide (Cr 3 C 2 ) shows high melting point (1890°C), good toughness and high antioxidant properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of vanadium and chromium carbides (V8C7–Cr3C2) nanocomposite via an in situ precursor method

Zhao

Zheng

et al. 2015

Rare Met.

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In situ synthesis method was used to prepare V 8 C 7 -Cr 3 C 2 nanocomposite. Ammonium vanadate, ammonium dichromate and nanometer carbon black were used as raw materials. The products were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric and differential scanning calorimetry (TG-DSC) and X-ray photoelectron spectroscopy (XPS) techniques. The results show that V 8 C 7 -Cr 3 C 2 nanocomposite with an average crystallite size of 25.4 nm can be synthesized at 1200°C for 1 h. The synthesis temperature required by the method is at least 200°C lower than that required by the conventional approaches for preparing vanadium and chromium carbides. The powders show good dispersion and are mainly composed of spherical or nearly spherical particles with a mean diameter of about 30 nm. The weight loss ratio of the precursor throughout the reaction process reaches 58 wt%. Three exothermic peaks and four endothermic peaks occur during the reaction. The surface of the specimen is mainly composed of V, Cr, C and O elements.

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“…Other disadvantages include long production time, low efficiency, loss of raw materials, and severe environmental risks. In this study, it was referred to the FeCl 3 -containing waste-acid spraying pyrolysis core device used by cold rolling plants in the steel industry [2][3][4][5][6][7], the spray pyrolysis patent technology, and the Venturi jet techniques. Thereby, a spray pyrolysis core device with independent intellectual property rights was developed, and a low-temperature pyrolysis technique was formulated [8][9][10][11] based on rare earth chloride (LaCl 3 ) solution.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation: preparation of La2O3 in a jet pyrolysis reactor

Zhang

Zhao

et al. 2015

Rare Met.

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Based on the technique for preparing LaCl 3 via direct pyrolysis of rare earth chloride solution, a jet pyrolysis reactor was designed and the intra-reactor temperature and chemical reactions were numerically simulated using computational fluid dynamics (CFD) technique. The results show that the flow rate variation at the fuel inlet does not largely affect the temperature in the reactor, while the increase in external pressure at the material inlet rapidly decreases the average temperature, Venturi temperature, and outlet temperature. The CH 4 and O 2 inside the reactor are combusted completely, and when the material inlet pressure is \90 Pa, the LaCl 3 is fully pyrogenated. The contents of CO 2 , La 2 O 3 , and HCl fluctuate near the Venturi tube and finally stabilize. La 2 O 3 content at the outlet is in a top-to-bottom gradient.

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Mechanical properties of WC–Co coatings with different decarburization levels

Cited by 15 publications

References 16 publications

Wear behaviour of WC–Co HVOF coatings at different temperatures in air and argon

Wear behaviour of WC–Co HVOF coatings at different temperatures in air and argon

Synthesis of vanadium and chromium carbides (V8C7–Cr3C2) nanocomposite via an in situ precursor method

Numerical simulation: preparation of La2O3 in a jet pyrolysis reactor

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