Reactions of FeCr alloys with liquid zinc in hot-dip galvanizing

Liu, Ya; Tang, Maoyou; Song, Yuanyuan; Wu, Changjun; Peng, Haoping; Su, Xuping; Wang, Jianhua

doi:10.1016/j.surfcoat.2015.05.041

Cited by 11 publications

(9 citation statements)

References 35 publications

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“…As the time is in the range of t 1 to t 2 , the layer pairs increase with the immersion time, while if the immersion time is over t 2 , the periodic layered structure begins to be destroyed. As Liu et al [21] investigated the formation kinetics of the periodic layered structures in Fe30Cr70/Zn system, they also found that formation of periodic layered structure require an incubation period. And when the immersion time is too long, the growth rate of Fe-Al intermetallic layer decreases, the Fe-Al intermetallic layer is gradually attacked by the liquid phase of the bath according to Chen et al [28] and Nishimoto et al [29].…”

Section: Effect Of Immersion Time On Periodic Layered Structurementioning

confidence: 99%

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Formation of periodic layered structure during hot-dip galvanizing in Al-Zn-Mg bath

Gao

Kuang

et al. 2016

Surface and Coatings Technology

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This study investigated the effect of Al and Mg content and immersion time on the formation of periodic layered structure during hot-dip galvanizing in Al-Zn-Mg bath. The steel substrates were immersed in Al-Zn bath for 10 s to 120 s, with five levels of Al content in the range of 15 to 55 wt.%, and four levels of Mg additions, in the range of 0.5 to 3.0 wt.%. The microstructure and constituent phases of the periodic layered structure were characterized by optical microscopy, scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The coating with periodic layered structure contains a thin light gray Fe 2 Al 5 Zn x layer near substrate and outer periodic layered structure.The periodic layered structure consists of alternating light gray layer (FeAl 3 Zn x ) and black 2 gray layer (Al dendrites and Zn-rich interdendritic regions). The formation of periodic layered structure requires an incubation period t 1 , while if the immersion time is over t 2 , the periodic layered structure is destroyed. In addition, t 1 and t 2 varies with the Al content and Mg addition.

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Section: Effect Of Immersion Time On Periodic Layered Structurementioning

confidence: 99%

“…%V [17], Fe 3 Si/Zn [18] and Ni 3 Si/Zn [19][20]. Recently Liu et al [21] observed the periodic layered structure with alternating layers in the reactions of FeCr alloys and molten Zn. However, the information about the periodic layered structure formed in hot hip galvanizing is still insufficient.…”

Section: Introductionmentioning

confidence: 99%

Formation of periodic layered structure during hot-dip galvanizing in Al-Zn-Mg bath

Gao

Kuang

et al. 2016

Surface and Coatings Technology

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“…The severe corrosion of equipment in liquid zinc results in significant production downtime and huge maintenance costs. Therefore, superior liquid zinc corrosion resistant materials have been constantly designed and developed to meet the requirements of galvanizing equipment [9][10][11].…”

Section: Background and Experimentalmentioning

confidence: 99%

Accelerated Cavitation Damage of Steels in Liquid Metal Environments

Xing¹,

Fu²,

Wei³

2018

Cavitation - Selected Issues

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Cavitation can be described as a hydrodynamic phenomenon which involves in the formation and collapse of vapor bubbles in a liquid medium. It always accelerates the cavitation damage and brings about multi-scale interactions of cavitation erosion between materials and fluids. For example, corrosion by dissolution/reaction can accelerate cavitation erosion under different liquid temperatures and velocities to alter interface films, and multiphase interface structure can also in turn affect the interfacial flow regime to induce cavitation in various fluids. In this chapter, interfacial characteristics and erosioncorrosion mechanism of directionally solidified (DS) Fe-B alloy with various Fe2B lamellar spacing in flowing zinc were investigated. The results indicate that the formation of adhesive interfacial film not only depends on erosion time and Fe2B lamellar spacing, but also relies on epitaxial ζ accumulation determined by zinc flow effect. Meanwhile, microturbulence of flowing zinc can result in the formation of slip bands and erosion pits on the ζ-FeZn13 surface. The flow-induced localized corrosion appears to accelerate the erosion-corrosion damage of interfacial adhesive film structure and morphology, which reveals underlying erosion mechanism of liquid metal.

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“…The second model advised by Kao and Chang [30] proposed a chemical-potential instability model, however, this model did not consider the layers consisting of two-phases. In our group's series work on periodic layered structure, diffusion-controlled precipitation and growth model was elaborated [25,27,31]. In the following discussion, this model has been put forwarded to explain the formation mechanism of alternating layers in the Co-Si-Zn system.…”

Section: Formation Mechanism Of Periodic Layered Structurementioning

confidence: 99%

Formation of periodic layered structure during reaction between Co2Si and liquid Zn

Liu

Tang

Dong

et al. 2016

Surface and Coatings Technology

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Reactions of Co 2 Si alloy with liquid zinc for annealing time up to 720 minutes were studied by means of scanning electron microscope, energy-dispersive X-ray spectroscope and electron backscattered diffraction techniques. The results showed that periodic patterns, Co 2 Si / (γ 2 + η-Zn), were observed in the reaction zone, and its thickness and morphology were dependent on the crystallographic orientation of Co 2 Si grain. The relationship between anisotropy growth of the periodic patterns and crystal structure was explained with the concept of dangling bonds. The thermodynamic foundation and mechanism of formation of the periodic layered structure were elaborated in this paper.

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Reactions of FeCr alloys with liquid zinc in hot-dip galvanizing

Cited by 11 publications

References 35 publications

Formation of periodic layered structure during hot-dip galvanizing in Al-Zn-Mg bath

Formation of periodic layered structure during hot-dip galvanizing in Al-Zn-Mg bath

Accelerated Cavitation Damage of Steels in Liquid Metal Environments

Formation of periodic layered structure during reaction between Co2Si and liquid Zn

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