Microstructure and formation mechanism of the Si-Cr dual-alloyed coating prepared by pack-cementation

Zeng, Jing; Hu, Jianjun; Yang, Xian; Xu, Hongbin; Li, Hui; Guo, Ning; Dong, Qingshan

doi:10.1016/j.surfcoat.2020.126142

Cited by 11 publications

(7 citation statements)

References 48 publications

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“…The gradient distribution of hardness is considered to be beneficial to the overall mechanical properties of the coating. 54…”

Section: Resultsmentioning

confidence: 99%

“…The gradient distribution of hardness is considered to be beneficial to the overall mechanical properties of the coating. 54 High-temperature wear resistance Figure 9 shows the surface morphology of coated and uncoated samples after the high-temperature friction and wear tests at 600 °C. The red dotted line in the figure represents the wear scar width.…”

Section: Microhardnessmentioning

confidence: 99%

“…AFA steel will face enormous challenges when the environment has a high temperature, high oxidation, high friction, and wear (such as the erosion of flowing supercritical water, supercritical carbon dioxide, liquid metal, etc.). Many previous studies [11][12][13] have shown that one of the most effective ways to enhance wear resistance and surface hardness is by coating it. Coating technology can be broadly categorised into two groups: one is thermal diffusion type, including gas diffusion infiltration, hot dip coating, packcementation, 13 and high-energy beam surface treatment 14,15 ; the other is deposition type, including physical vapour deposition, [16][17][18][19] chemical vapour deposition, [20][21][22] electroplating, 23,24 spraying, 25,26 micro-arc oxidation, 27,28 etc.…”

Section: Introductionmentioning

confidence: 99%

“…Many previous studies [11][12][13] have shown that one of the most effective ways to enhance wear resistance and surface hardness is by coating it. Coating technology can be broadly categorised into two groups: one is thermal diffusion type, including gas diffusion infiltration, hot dip coating, packcementation, 13 and high-energy beam surface treatment 14,15 ; the other is deposition type, including physical vapour deposition, [16][17][18][19] chemical vapour deposition, [20][21][22] electroplating, 23,24 spraying, 25,26 micro-arc oxidation, 27,28 etc. Pack-cementation is an efficient, simple, mature, and low-cost approach for preparing metallic and ceramic coatings on metals and alloys.…”

Section: Introductionmentioning

confidence: 99%

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Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Zhang,

Feng,

Wang

et al. 2024

Surface Engineering

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A gradient composite coating of Cr–AlN with an outer Cr-rich layer and an inner AlN-rich layer was deposited on the alumina-forming austenitic (AFA) steel surface by pack-cementation chromising. The phase composition, element distribution, and microstructure of the coating were characterised and analysed. The microhardness and the friction and wear performance at 600 °C were tested. The results show that the outer Cr-rich layer mainly consists of a polycrystalline Cr–Fe solid solution and a small amount of Cr2C and (Cr, Fe)2N1− x particles. The inner layer contains plenty of AlN particles with different sizes dispersed on the Cr–Fe solid solution. The formation of AlN particles is closely related to the spontaneous chlorination and nitridation reaction. The addition of Y2O3 particles in the encapsulated powder promotes the uniformity of Cr plating and the growth of AlN particles. The gradient composite coating remarkably improves the microhardness and high-temperature wear resistance of AFA steel.

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“…The gradient distribution of hardness is considered to be beneficial to the overall mechanical properties of the coating. 54…”

Section: Resultsmentioning

confidence: 99%

Section: Microhardnessmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gradient Cr–AlN composite coating prepared on alumina-forming austenitic steel

Zhang,

Feng,

Wang

et al. 2024

Surface Engineering

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“…Surface coating technology is one of the most common methods to improve the corrosion resistance of materials that can be directly used in the next generation nuclear system [36], such as pack-cementation [37][38][39], physical vapor deposition (PVD) [40][41][42], pulsed laser deposition/cladding [43][44][45], plasma electrolytic oxidation [46][47][48], cathodic arc ion plating [49,50], etc. Compared with surface alloying, surface coating technology can introduce high-entropy alloys and ceramics with high heat resistance and corrosion resistance, and has the potential to greatly improve the corrosion resistance of steels.…”

Section: Surface Coatings Of Cladding Materials For Lbe-lfrmentioning

confidence: 99%

Corrosion Behavior and Surface Treatment of Cladding Materials Used in High-Temperature Lead-Bismuth Eutectic Alloy: A Review

et al. 2021

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Liquid metal fast reactors were considered to be the most promising solution to meet the enormous energy demand in the future. However, corrosion phenomenon caused by the liquid metal, especially in high-temperature lead-bismuth coolant, has greatly hindered the commercialization of the advanced Generation-IV nuclear system. This review discussed current research on the corrosion resistance of structural materials (such as EP823, T91, ODS, and authentic steels) in high-temperature liquid metal served as reactor coolants. The current corrosion resistance evaluation has proved that even for the excellent performance of EP823, the structural material selected in pressurized water reactor is not the ideal material for operation in the high-temperature lead-bismuth eutectic (LBE). Furthermore, the latest coating technologies that are expected to be applied to cladding materials for coolant system were extensively discussed, including Al-containing coatings, ceramic coatings, oxide coatings, amorphous coatings and high-entropy alloy coatings. The detailed comparison summarized the corrosion morphology and corrosion products of various coatings in LBE. This review not only provided a systematic understanding of the corrosion phenomena, but also demonstrated that coating technology is an effective method to solve the corrosion issues of the advanced next-generation reactors.

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