Comparative study on structure, corrosion properties and tribological behavior of pure Zn and different Zn-Ni alloy coatings

Tafreshi, M.; Allahkaram, Saeed Reza; Farhangi, Hassan

doi:10.1016/j.matchemphys.2016.08.026

Cited by 54 publications

(31 citation statements)

References 33 publications

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“…The formation of the shielding layer on the films’ surface did not show evidence of passivation. This passivation behavior is in accordance with the literature [14] , [32] , [33] , [39] , [40] , [41] , [42] , [43] . The possible reasons to validate this corrosion phenomenon are compact smoother surface, refined grain size, an increased proportion of cobalt ions on the films’ surface.…”

Section: Resultssupporting

confidence: 92%

Ultrasonic-assisted supercritical-CO2 electrodeposition of Zn-Co film for high-performance corrosion inhibition: A greener approach

Pandiyarajan

Ganesan

Liao

et al. 2021

Ultrasonics Sonochemistry

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Section: Resultssupporting

confidence: 92%

Ultrasonic-assisted supercritical-CO2 electrodeposition of Zn-Co film for high-performance corrosion inhibition: A greener approach

Pandiyarajan

Ganesan

Liao

et al. 2021

Ultrasonics Sonochemistry

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“…The corrosion resistance of Zn-Ni electroplated coatings on metallic substrates depends on the coating composition and structure. Increasing its nickel content leads to more noble open circuit potentials, i.e., the corrosion resistance of the coating is enhanced if barrier properties are concerned 20,24 . However, depending on the coating nobility, it might not provide cathodic protection to the steel substrate and the mechanism of the protection against corrosion would be by barrier 22,25 .…”

Section: Resultsmentioning

confidence: 99%

The use of Scanning Vibrating Electrode Technique to Evaluate the Effect of Hot Stamping on the Corrosion Resistance of 22MnB5 press-hardened Steel Electroplated with Zn-Ni

et al. 2019

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Carmakers must achieve the worldwide targets for lightweight materials, safety and reducing the fuel consumption. The use of press-hardened steel (PHS), in vehicle structures has been contributing with these requirements. This type of steel is widely used for the hot-stamping which consists in heating the steel blank to total austenitization temperature and then transferring it from the furnace into the die tool where the steel is formed and quenched at the same time. PHS is usually protect with metallic coatings in order to avoid both steel oxidation and decarburization. Hot-dip Al-Si coating is currently the main used in this application. However, alternative coatings, like zinc-based, are under investigation. This work aims at evaluating the corrosion resistance of the 22MnB5 grade PHS, electroplated with Zn-Ni, before and after hot stamping, using the scanning vibrating electrode technique (SVET). Results from SVET showed that samples prior to hot stamping, the corrosion mechanism was uniform over the exposed surface, and was mainly related to selective dissolution of zinc from the coating. On the other hand, hot stamped samples showed localized corrosion mechanism with decrease in current with time of immersion due to the formation of corrosion products on the exposed surface.

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“…Tafreshi et al [123] compared the tribological behaviour of electroplated Zn and Zn-Ni coatings with different Ni-contents, and found that Zn-14wt.%Ni coatings presented the lowest wear loss and friction coefficient. Pure Zn coating had the lowest microhardness of 45 Hv, while increasing Ni content in the Zn-Ni coatings from 11 to 17 wt.% enhanced the microhardness of the alloy coatings from 226 to 293 Hv.…”

Section: Frictional Characteristicsmentioning

confidence: 99%

Deposition processes and properties of coatings on steel fasteners — A review

2019

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Mechanical fastening is widely used in joining metals, particularly in automotive, aerospace, building and construction industries. However, the main concern on mechanical fastening is the issue of corrosion. An effective way to prolong the service life of steel fasteners is to apply protective coatings onto these components. This paper reviews and compares a few common coating deposition techniques, i.e., electroplating, hot-dip galvanizing, ion vapour deposition and mechanical plating, in terms of their characteristics. Compositional and microstructural properties including morphology and porosity, corrosion resistance performance and frictional performance of the coatings formed by each process are discussed in details. Hydrogen embrittlement, a premature failure often occurred on high strength steel fasteners, is also reviewed. The key results of recent studies of various metallic coatings on fasteners are presented to provide a fundamental understanding of the evolving topics, and the research gaps have been identified for further investigation.

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Comparative study on structure, corrosion properties and tribological behavior of pure Zn and different Zn-Ni alloy coatings

Cited by 54 publications

References 33 publications

Ultrasonic-assisted supercritical-CO2 electrodeposition of Zn-Co film for high-performance corrosion inhibition: A greener approach

Ultrasonic-assisted supercritical-CO2 electrodeposition of Zn-Co film for high-performance corrosion inhibition: A greener approach

The use of Scanning Vibrating Electrode Technique to Evaluate the Effect of Hot Stamping on the Corrosion Resistance of 22MnB5 press-hardened Steel Electroplated with Zn-Ni

Deposition processes and properties of coatings on steel fasteners — A review

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