Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

Jonda, E.; Łatka, Leszek; Pakieła, Wojciech

doi:10.3390/ma14071594

Cited by 16 publications

(7 citation statements)

References 45 publications

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“…It is important to notice that values of Ra decrease with higher deposition parameters. Nevertheless, these values are still approximately two times higher than reported by Jonda [12]. Higher roughness can negatively affect fatigue life and corrosion resistance of coatings.…”

Section: Resultsmentioning

confidence: 64%

Influence of the Deposition Parameters on Microstructure and Properties of HVOF Sprayed WC-Crc-Ni Coating

VRAŽINA

Šulák

Poloprudský

et al. 2022

METAL 2022 Conference Proeedings

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This paper investigates the influence of thermal spray parameters of the high-velocity oxygen fuel (HVOF) process on the properties of cermet coatings prepared from commercially available Amperit 551 WC-CrC-Ni powder. Three different processing parameters were applied to optimize the production process with the aim to achieve preeminent mechanical properties and fully dense material without microstructural defects. The deposition was carried out by a GLC5 gun. The velocity and temperature of powder particles in the spray stream were monitored by Accuraspray Tecnar diagnostic tool. The quality of deposited coatings was analyzed by means of light microscopy, scanning electron microscopy, and X-ray diffraction. The chemical composition of the used powder and sprayed WC-CrC-Ni coating was determined by energy dispersive spectroscopy. It was found that the spray parameters have a negligible effect on the resulting microstructure and phase composition of the coating. However, the porosity and surface roughness were significantly affected by the variation in process parameters. To assess the basic mechanical properties of HVOF sprayed coating instrumented Vickers hardness measurements were utilized. The coating hardness reached mean values over 1400 HV 0.1 and the indentation modulus varied from 152-279 GPa.

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Section: Resultsmentioning

confidence: 64%

Influence of the Deposition Parameters on Microstructure and Properties of HVOF Sprayed WC-Crc-Ni Coating

VRAŽINA

Šulák

Poloprudský

et al. 2022

METAL 2022 Conference Proeedings

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“…In view of the fact that both oxidation and friction usually occur on the surface of materials, the preparation of coatings can efficiently prevent substrate surface from friction and wear at high temperature. As one of the commonest means for preparing coatings, the high velocity oxygen flame (HVOF) spraying technology has been widely used as preparing coatings to resist wear [17][18][19]. Its advantages include the low porosity, controllable thickness of preparing coatings, and no damage to the substrate [20].…”

Section: Introductionmentioning

confidence: 99%

High temperature induced “glaze” layer formed in HVOF-sprayed NiCrWMoCuCBFe coating and its wear reduction mechanism

et al. 2022

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The in-situ formation of oxides on alloy surface induced by high temperature can effectively reduce wear and resist oxidation. In consideration of the solid solution strengthening effect and great oxidation resistance of additional elements at elevated temperature, the NiCrWMoCuCBFe coating was prepared by high velocity oxygen flame (HVOF) spraying technology, and its tribological behavior was scrutinized from 25 to 800 °C. By means of high temperature Vickers hardness tester and high temperature X-ray diffractometer, the mechanical properties and microstructures of NiCrWMoCuCBFe coating were measured. And the effect of the mechanical properties and microstructures of the coating on tribological performance was discussed in detail. The results showed both its friction coefficient (0.37) and wear rate (5.067 × 10−6 mm3·N−1·m−1) at 800 °C were the lowest, which was mainly related to the formation of “glaze” layer on the coating surface at high temperature. The glaze layer consisted of two parts, which were NiCr2O4 oxide film with the ability of interlaminar slip formed in the outer layer and nano-grains existed in the inner layer. Worth mentioning, these nano-grains provided bearing capability while the oxide film was vital to reduce wear rate and friction coefficient. As the ambient temperature increased, many hard oxides were produced on the wear scars, including NiO, Cr2O3, MoO3, and Mo2C. They can improve tribological and mechanical properties of NiCrWMoCuCBFe coating at a wide temperature range.

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“…Magnesium alloys are widely used in the automotive industry. However, magnesium alloys have some properties, such as poor corrosion resistance, low wear resistance, and high chemical reactivity, limiting their use in the industry [ 1 , 2 ]. Conversely, materials with such properties do not satisfy the requirements for advanced applications.…”

Section: Introductionmentioning

confidence: 99%

Fe/Mg/Fe Multilayer Composite Sheet Fabricated by Roll Cladding

Ren

Zheng

2022

Materials

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A new multilayer composite sheet consisting of Fe/Mg/Fe was fabricated from galvanized steels and Mg alloy sheets via roll cladding. The clad steel improved the Mg surface hardness from HV 65 to HV 132. Bonding occurred as the reduction ratios increased up to over 10%. Investigation of the microstructure of the Mg/steel interface revealed a 5 μm- to 10 μm-thick transition layer between Mg and each steel sheet, consisting of Zn and an intermetallic compound (0.97Mg–0.03Zn). Zinc coating from the galvanized steel sheet improved the metallurgical bonding between Mg and Fe by forming new intermetallic phases.

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Comparison of Different Cermet Coatings Sprayed on Magnesium Alloy by HVOF

Cited by 16 publications

References 45 publications

Influence of the Deposition Parameters on Microstructure and Properties of HVOF Sprayed WC-Crc-Ni Coating

Influence of the Deposition Parameters on Microstructure and Properties of HVOF Sprayed WC-Crc-Ni Coating

High temperature induced “glaze” layer formed in HVOF-sprayed NiCrWMoCuCBFe coating and its wear reduction mechanism

Fe/Mg/Fe Multilayer Composite Sheet Fabricated by Roll Cladding

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