Electrolytic Co-deposition of Ni-CrAlY Composite Coatings Using Different Deposition Configurations

Witman, J.C.; Zhang, Y.

doi:10.1080/10426914.2015.1090596

Cited by 13 publications

(13 citation statements)

References 15 publications

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“…4a). Similar behavior has also been observed for electrolytic Ni-Al [32], Ni-CrAlY [33], Ni-graphite [34] and Cr-graphite [35] composite coatings. Although the current density did not seem to affect the Mn 3 O 4 incorporation, it had a great impact on the uniformity of coating thickness.…”

Section: Effects Of Other Parameterssupporting

confidence: 82%

“…In order to further increase the quantity of Mn 3 O 4 particles, other configurations need to be investigated, such as "sediment codeposition" in which the specimen (cathode) is placed horizontally beneath the anode. Particle incorporation close to 50 vol.% was achieved in some recent composite coatings using the horizontal configuration in electro-codeposition[35]. It is worth noting that the important findings from the present study can be readily applied to future sediment codeposition of Co-Mn 3 O 4 coatings.5.…”

supporting

confidence: 51%

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Electrodeposition of Co–Mn3O4 composite coatings

Apelt

Zhang

Zhu

et al. 2015

Surface and Coatings Technology

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Electrolytic codeposition was employed as a low-cost alternative process to fabricate composite coatings containing Mn 3 O 4 particles in a Co matrix for potential applications in solid oxide fuel cells. The effects of codeposition parameters on the Mn 3 O 4 particle incorporation, cathode current efficiency, and coating uniformity were investigated using a Design of Experiments (DoE) approach. Concentration of Mn 3 O 4 particles in the plating solution, agitation rate, current density, and solution pH were the four factors considered in the fractional factorial 2 (4-1) design. With different combinations of the deposition parameters, the amount of Mn 3 O 4 particles incorporated in the composite coatings ranged from 0 to 12 vol.%. The DoE results indicate that the pH of the plating solution exhibited the greatest importance on both particle incorporation and current efficiency, which were decreased significantly below pH 2. The Mn 3 O 4 concentration in the plating bath showed the second strongest effect on particle incorporation, followed by the agitation rate. While the applied current density did not appear to affect the Mn 3 O 4 particle incorporation, it had a strong influence on coating thickness uniformity.

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Section: Effects Of Other Parameterssupporting

confidence: 82%

supporting

confidence: 51%

Electrodeposition of Co–Mn3O4 composite coatings

Apelt

Zhang

Zhu

et al. 2015

Surface and Coatings Technology

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“…As shown in Figure 1b, the specimen and prealloyed CrAlX powder (20 g/L) were loaded into a barrel that was subsequently immersed in the plating tank. [ 13,15 ] The barrel was covered by a membrane that was permeable to the plating solution but not to the powder. Alloy powders made by two different processes were used to deposit the NiCoCrAlX coatings.…”

Section: Methodsmentioning

confidence: 99%

Cyclic oxidation behavior of MCrAlX coatings made by electrolytic codeposition

Zhang

Witman

Dryepondt

2022

Materials & Corrosion

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MCrAlY coatings made by electron beam physical vapor deposition or thermal spray are often used to provide protection for superalloys against hightemperature oxidation and corrosion. In addition to Y, other elements such as Ta, Hf, and Si have been reported to be beneficial. In this paper, NiCoCrAlX (where X = Y, Ta, Hf, and/or Si) coatings were fabricated via an electrolytic codeposition process in a sulfate-based Ni-Co plating solution. As compared to uncoated René 80 substrates, the electro-codeposited NiCoCrAlX coatings demonstrated superior performance during oxidation testing with a 1-h cycle frequency at 1000°C and 1100°C. Further improved oxidation resistance was observed for the coatings with Hf and Si additions, but not with the addition of Ta. The levels of S, Y, and O in the electrodeposited NiCoCrAlY coating were measured by high-resolution glow discharge mass spectrometry and were compared to those in thermal spray coatings.

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“…MCrAlY (M for Ni and/or Co) alloys have been widely used in aircraft engines and gas turbines [1]. MCrAlY coatings can be manufactured by various coating techniques, for instance plasma spray (PS), high-velocity oxygen-fuel spray (HVOF), physical-vapour deposition (PVD), arc ion plating processes, etc [2][3][4][5][6][7][8][9][10][11][12][13][14]. MCrAlY can protect the superalloy components from oxidation by forming dense and continuous thermally-grown oxide (TGO) layer [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Simulation Study on Microstructure Development in a MCrAlY Superalloy System

Yuan

Zheng

2021

Thermal Spray 2021: Proceedings From the International Thermal Spray Conference

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In this paper; a diffusion kinetic model was applied to simulate the microstructure development in a MCrAlY-superalloy system at high temperatures. Both simulation and experimental results showed that γ+γ’ microstructure was obtained in the coatings due to Al depletion after oxidation. With the help of the modelling; the mechanism of the formation of the diffusion zones in the single crystal (SC) superalloy can be also analyzed. The results revealed that the inward diffusion of Al from coating affected the depth of secondary reaction zone (SRZ) with the precipitation of TCP phases while the depth of inter-diffusion zone (IDZ) was decided by the inward diffusion of Cr.

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Electrolytic Co-deposition of Ni-CrAlY Composite Coatings Using Different Deposition Configurations

Cited by 13 publications

References 15 publications

Electrodeposition of Co–Mn3O4 composite coatings

Electrodeposition of Co–Mn3O4 composite coatings

Cyclic oxidation behavior of MCrAlX coatings made by electrolytic codeposition

Simulation Study on Microstructure Development in a MCrAlY Superalloy System

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