Influence of Cr Content on the Microstructure and Electrochemical Corrosion in Plasma Cladding Ni-Cr Coatings

Zhang, Wenya; Wang, Canming; Song, Qiang; Cui, Hongzhi; Feng, Xianqi; Zhang, Chengqi

doi:10.1007/s11661-019-05440-5

Cited by 11 publications

(3 citation statements)

References 44 publications

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“…The micromorphology and energy spectrum chemical composition analysis of the wear scars after the wear test of the composite coating are shown in Figure 9 and Figure 10 , respectively. The composite coatings exhibit adhesive wear characteristics, with the formation of thick oxide films on the friction surfaces [ 36 , 37 ]. The morphology of the wear debris at room temperature is shown in Figure 9 .…”

Section: Resultsmentioning

confidence: 99%

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Geng

Zhang²,

Jun

et al. 2023

Materials

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Cr3C2-modified NiCr–TiC composite coatings were prepared using the plasma spraying technique for different Cr3C2 contents on the microstructure and the properties of the Ni-based TiC cladding layer were investigated. The microstructures of the coatings were characterized using scanning electron microscopy, and the friction and wear performance of the coating was evaluated by the wear tests. The results revealed that the surfaces of the Cr3C2-modified NiCr–TiC composite coatings with varying Cr3C2 contents were dense and smooth. TiC was uniformly distributed throughout the entire coating, forming a gradient interface between the binder phase of the Ni-based alloy and the hard phase of TiC. At high temperatures, Cr3C2 decomposes, with some chromium diffusing and forming complex carbides around TiC, some chromium solubilizes with Fe, Ni, and other elements. An increase in chromium carbide content leads to an upward trend in hardness. The measured hardness of the coatings ranged from 600 to 850 HV3 and tended to increase with increasing Cr3C2 content. When the mass fraction of Cr3C2 reached 30%, the hardness increased to 850 HV3, and the cracks and defects were observed in the coating, resulting in a wear resistance decline.

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Section: Resultsmentioning

confidence: 99%

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Geng

Zhang²,

Jun

et al. 2023

Materials

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“…Many authors have reported the development of Ni-20Cr coatings on steel alloys [17][18][19][20][21][22][23], but no researcher has deposited nano yttria-stabilized zirconia (Y2O3/ZrO2) (YSZ) reinforced composite coatings on boiler steels. Therefore, there is a scope to develop new nano yttria-stabilized zirconia (YSZ) reinforced (Ni-20Cr) nanocomposite coatings and subsequently deposit and investigate the microstructure, porosity, and microhardness of these newly developed composite coatings on boiler tube steel.…”

Section: Introductionmentioning

confidence: 99%

Effect of nano yttria-stabilized zirconia on properties of Ni-20Cr composite coatings

Singh

Goyal

Bhatia

2022

J. Electrochem. Sci. Eng.

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In the present work, 5 wt.% and 10 wt.% yttria-stabilized zirconia (YSZ) nanoparticles were reinforced in Ni-20Cr powder and deposited on boiler tube steel using a high-velocity oxy-fuel spraying process. The effect of YSZ reinforcement on microhardness, surface roughness and porosity was investigated. The hardness was the highest for nanocomposite coating reinforced with 10 wt.% YSZ and hardness was found to increase with a decrease in porosity. The coating microstructure and elements were characterized using field emission scanning electron microscopy (FE-SEM) with an energy dispersive spectroscope (EDS). The constituents of the coating were identified using X-ray diffractometer. It was found that the composite coating with 10 wt.% YSZ reinforced nanocomposite coating has the highest microhardness, in the range of 1008-1055 hv. During the coating process, nano YSZ particles were dispersed in the gaps between the micrometric Ni-20Cr particles, providing a better coating matrix than conventional Ni-20Cr. The Ni-20Cr with 10 wt.% of YSZ nanoparticles showed better results in terms of mechanical and microstructural properties during the investigation.

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“…Co-based alloys with high cost are mostly used for expensive industrial components. Ni-based alloys have not only excellent properties but also lower prices than cobalt-based alloys [ 16 , 17 , 18 , 19 ]. The existing Ni60 is used to prepare Ni-based plasma covering layers.…”

Section: Introductionmentioning

confidence: 99%

Influence of Mo on Ni-15Cr Cladding Layers via Plasma Transferred Arc

et al. 2022

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The composite Ni-Cr-Mo covering layers with excellent corrosion and wear resistance are deposited by plasma transferred arc (PTA), which can improve the service life of ships and solve the corrosion and wear problems of mechanized boats. The effects of Mo on the microstructure, hardness and corrosion resistance of covering layers were analyzed by OM, SEM, XRD, EDS, a micro hardness test, a friction test and a corrosion-resistance test. The results show that the structure of covering layers change and the austenite precipitates become granular with an increase of Mo content. In addition, the corrosion and wear resistance of covering layers are improved and the sample with 5% content of Mo has the best wear and corrosion resistance.

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Influence of Cr Content on the Microstructure and Electrochemical Corrosion in Plasma Cladding Ni-Cr Coatings

Cited by 11 publications

References 44 publications

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Effect of Chromium Carbide Addition on the Microstructures and Properties in Dual Carbide Phases Reinforced Ni-Based Composite Coatings by Plasma Cladding

Effect of nano yttria-stabilized zirconia on properties of Ni-20Cr composite coatings

Influence of Mo on Ni-15Cr Cladding Layers via Plasma Transferred Arc

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