Screening of the FeCrAl LBE corrosion-resistant coatings: The effect of Cr and Al contents

Zhang, Wei; Zhong, Yilong; Qiu, Xi; Li, Quan; Yue, Huifang; Zhou, Yi; Deng, Jiuguo; Yang, Jian; Líu, Hao; Li, Qingyu; Liu, Ning; Yang, Jijun

doi:10.1016/j.surfcoat.2023.129477

Cited by 25 publications

(3 citation statements)

References 64 publications

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“…The outer surface of the cladding tube was polished using the electrochemical polishing device with a voltage of 20 V and a time of 60 s. The polished samples were ultrasonically cleaned in acetone and ethanol, respectively. Three kinds of FeCrAl coating with excellent corrosion resistance in our pre-experiment were determined [24][25][26]. The FeCrAl-based alloy (Fe15Cr10Al2Si, Fe15Cr10Al0.5Y, and Fe15Cr10Al2Si0.5Y) with a length of 460 mm, a width of 100 mm, and a thickness of 5 mm were used as sputtering targets.…”

Section: Coating Preparationmentioning

confidence: 99%

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

Zhang,

Qiu,

Zhou

et al. 2024

Mater. Res. Express

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The high-temperature lead-bismuth eutectic (LBE) corrosion resistance and ring compression performance of the Fe15Cr11Al2Si, Fe15Cr11Al0.5Y, and Fe15Cr11Al2Si0.5Y coatings were investigated. Even if the corrosion test temperature reaches 800 ℃, all these coatings can effectively protect the steel cladding tube. After the corrosion test temperature exceeded 660 ℃, an obvious Al-rich oxide layer was formed on the surface of the coating, and Al element enrichment occurred at the interface between the coating and the substrate. After the corrosion test at 800 ℃, holes appeared in the thick interface layer of the Fe15Cr11Al2Si0.5Y coating. The Fe15Cr11Al2Si coating cracked after the ring compression test with a deformation rate of 3%, and the coating peeled off after the deformation rate reached 5%. When the deformation rate reached 5%, there was still no cracking in the Fe15Cr11Al0.5Y coating. When the deformation rate reached 30%, the coating cracked, but the cracked coating was still tightly bonded with the substrate. The Fe15Cr11Al2Si0.5Y coating has the worst compression performance, even if the deformation rate is 1%, the coating still peels off obviously. The underlying mechanism for the evolution of corrosion resistance and compression performance was discussed.

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Section: Coating Preparationmentioning

confidence: 99%

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

Zhang,

Qiu,

Zhou

et al. 2024

Mater. Res. Express

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show abstract

“…[17][18][19][20][21][22][23][24][25][26][27], alloy coatings (FeAl, FeCrAl, FeCrAlY, AlCrFeMoTi, etc.) [28][29][30][31][32][33][34][35], and others. The primary corrosion resistance mechanism of metal coatings involves the formation of a dense oxide film on the coating surface by Al, Cr, and other elements, thereby safeguarding against LBE corrosion, and these coatings exhibit a degree of self-repairing ability [29].…”

Section: Introductionmentioning

confidence: 99%

“…In this study, given previous research [34] and the second-generation FeCrAl alloy content, ten FeCrAlY-xAl2O3 (x = 0, 0.5, 1, 2, 4 wt%) nanoceramic composite coatings are fabricated by plasma spraying, with seven demonstrating successful enhancement via laser remelting, which is one of the promising surface coating modification methods that have been widely used in recent years. Arkajit Ghosh et al [48] used a combination of laser rapid solidification and chemical (Sr) modification, and they synthesized fully eutectic Al-Si microstructures with heavily twinned Si nano-fibers that exhibited high hardness up to 2.9 GPa, and high compressive flow strength (~840 MPa) with stable plastic flow to ~26% plastic strain.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Li,

Zhong,

Zhang

et al. 2024

Coatings

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Seven FeCrAlY-Al2O3 nanoceramic composite coatings are deposited on F/M steel via plasma spraying and laser remelting. A systematic investigation is conducted to examine the dependence of microstructure, mechanical properties, and lead–bismuth eutectic (LBE) corrosion resistance on the nano-Al2O3 addition and different Cr and Al contents. With the increase in Al content in FeCrAlY, gradual refinement of the coating grains occurs. The addition of nano-Al2O3 promotes the elemental segregation and precipitation of the second phase. The nano-Al2O3 notably enhances the mechanical properties of the coatings that are primarily attributed to second-phase and fine-grain strengthening. After LBE corrosion tests, intergranular corrosion morphology could be observed, where the contents of Cr and Al significantly influence the corrosion behavior of the coatings at varying temperatures.

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Effect of heat treatment on the microstructure, LBE corrosion resistance, and bonding strength of the FeCrAl‐based coatings

Zhang,

Zhou,

Yue

et al. 2024

Materials & Corrosion

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The bonding strength and LBE corrosion resistance of the Fe15Cr11Al2Si, Fe15Cr11Al0.5Y, and Fe15Cr11Al2Si0.5Y coatings heat‐treated at 500–650°C for 500 h were investigated. The results showed that the as‐deposited Fe15Cr11Al0.5Y coating has the strongest bonding strength with the F/M steel cladding tube compared with the Fe15Cr11Al2Si and Fe15Cr11Al2Si0.5Y coatings. Heat treatment deteriorates the bonding performance of the coatings, and obvious enrichment of Cr and Al elements appeared. The consumed Al element inside the heat‐treated coatings promotes the formation of Fe3O4 on the surface of the coatings after the corrosion test. The Y element can inhibit the enrichment of elements and the formation of Fe3O4. The bonding strength of the heat‐treated coatings can be improved after the corrosion test. The underlying mechanism of the evolution of microstructure and properties of the coatings after heat treatment and corrosion test was discussed.

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Screening of the FeCrAl LBE corrosion-resistant coatings: The effect of Cr and Al contents

Cited by 25 publications

References 64 publications

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

Investigation and evaluation of high-temperature lead-bismuth eutectic (LBE) corrosion resistance and compression performance of the FeCrAl-based coatings

Microstructure, Mechanical Properties, and Lead–Bismuth Eutectic Corrosion Behaviors of FeCrAlY-Al2O3 Nanoceramic Composite Coatings

Effect of heat treatment on the microstructure, LBE corrosion resistance, and bonding strength of the FeCrAl‐based coatings

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