Effect of rare earth lanthanum-cerium doping on corrosion behavior of zinc-aluminum-magnesium hot-dip galvanizing coatings used for transmission towers

Han, Yu; Xia, Yanqiu; Chen, Xin; Sun, Lu; Dongyu, Liu; Ge, Xiangyu

doi:10.1108/acmm-01-2017-1750

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…Therefore, during the wear process, a loose and cracked oxide layer on the surface of ZK60 alloy can be easily fractured [38]. On the other hand, several studies [39][40][41] reported that Ce in Mg-alloys could increase the resistance to the oxidation of Mg-alloy. The addition of Ce to Mgalloys leads to formation of a protective and compact oxide layer on the surface during the wear process.…”

Section: Wear Mechanismsmentioning

confidence: 99%

Effect of Ce Addition on the Tribological Behavior of ZK60 Mg-Alloy

et al. 2020

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The present work aims to study the tribological behavior of an extruded ZK60 alloy in the presence of Ce; in a previous study, among ZK60 alloys with different Ce addition rates, an alloy with 3 wt% of Ce was found to exhibit the most promising mechanical (e.g., hardness and strengths) properties, while its wear behavior remained unknown. The results of microstructural examinations by optical and electron microscopes show that Ce addition reduces the grain size from 6.1 to 2.0 μm. Besides, in addition to the precipitates already distributed in the base alloy (Mg 7 Zn 3), Ce could promote the formation of a new precipitate (MgZn 2 Ce), increasing the total fraction of the precipitates. These microstructural evolutions enhance the strengths of the studied ZK60 alloy, as the yield and tensile strengths increase from 212 to 308 MPa and from 297 to 354 MPa, respectively. A pin on disc tribometer was employed to study the wear behavior of the developed alloy under different normal loads (5, 20, 40, and 60 N). The results show that the base and Ce-added alloys exhibit almost a similar frictional behavior, while the wear resistance of the Ce-added alloy is higher within the load ranges applied: (i) in low load conditions (5 and 20 N), where the abrasive wear is the active mechanism, the precipitates in the Ce-added alloy could enhance the wear resistance. (ii) Under the load of 40 N, oxidative wear is also an operative wear mechanism, leading to a sharp increase in the wear rate of the alloys. In this condition, Ce could provide a protective oxide layer, which could improve the wear resistance of the alloy. (iii) At a load of 60 N, both studied alloys exhibit a similar wear rate due to a severe oxidation condition. Therefore, beyond this loading condition, the microstructural evolutions (e.g., change in precipitation behavior) caused by Ce addition can no longer contribute to the enhancement of wear resistance.

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Section: Wear Mechanismsmentioning

confidence: 99%

Effect of Ce Addition on the Tribological Behavior of ZK60 Mg-Alloy

et al. 2020

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“…A deposition of Ce3+ and Ce4+ phases improved the corrosion resistance of the metal. Hot dip galvanizing coating of Lanthanum (La) and cerium (Ce) on Q345 steel was developed by Han et al [25]. The result exhibited the development of new phase such as LaAl3 and Al11Ce3.…”

Section: Rare Earth Coating On Steel and Metalsmentioning

confidence: 99%

Review on Various Types of Coatings on Metal and Steel Alloys

Rath¹,

Singh²,

Arora³

et al. 2020

IJAPIE

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Coatings are used in various production and manufacturing industries for purposes viz. to increase tool life, to have better surface finish or surface quality of the product. These enhancements will help industries to increase their production rate and profit margin also. Coatings are used on different metal and steel alloys to enhance their physical and mechanical properties. Rare earth elements as an additive in coating had shown a significant increase in the performance of the developed coating. The present paper represents and reviews the research work on the various types of coatings and their effects on the performance of the substrate used. This paper also discusses the studies done by various researchers on the coating developed with Rare earth elements. The results from the literature exhibited an improvement in the characteristic properties of different metal, steel, and tool steel alloys. The last part of this paper presents the utilization/importance of various coatings on steels and tool steels along with the future scope of research work.

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Effect of Pre-oxidation Condition on the Microstructure of a Hot-Dip Galvanized Coating on Nodular Cast Iron

Chen

et al. 2023

J. of Materi Eng and Perform

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Effect of rare earth lanthanum-cerium doping on corrosion behavior of zinc-aluminum-magnesium hot-dip galvanizing coatings used for transmission towers

Cited by 7 publications

References 27 publications

Effect of Ce Addition on the Tribological Behavior of ZK60 Mg-Alloy

Effect of Ce Addition on the Tribological Behavior of ZK60 Mg-Alloy

Review on Various Types of Coatings on Metal and Steel Alloys

Effect of Pre-oxidation Condition on the Microstructure of a Hot-Dip Galvanized Coating on Nodular Cast Iron

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