Corrosion Resistance of 0-15% Ni-Zn Alloy Electroplated Coatings

Lambert, Michael R.; Hart, R. G.

doi:10.4271/860266

Cited by 8 publications

(7 citation statements)

References 8 publications

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“…as a construction material for roofs and facades in structural and civil engineering or as hot-dip coatings to protect iron and steel products from environmental corrosion attack in the steel producing and processing industry, especially the automotive industry [1,2]. Zinc hot-dip coatings on steel substrates provide mechanical properties, weldability, paintability as well as good corrosion resistance [3][4][5][6]. The protective ability of these coatings is improved by alloying zinc with metals such as Al, Mn, Fe, Co, and Ni [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn–5% Al (Galfan) alloy in neutral aerated sodium chloride solution

Rosalbino

Angelini

Macciò

et al. 2009

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn–5% Al (Galfan) alloy in neutral aerated sodium chloride solution

Rosalbino

Angelini

Macciò

et al. 2009

Electrochimica Acta

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“…Growing ecological concerns in recent years have led to a search for an alternative coating that can effectively replace cadmium coatings. Zn-Ni alloys are considered as a viable alternative to cadmium coatings (6)(7)(8)(9)(10)(11)(12). The alloys containing 15 -20 wt% of nickel and corrode four times less than cadmium-titanium coatings.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Deposit Compositionally Modulated Zn-Ni Multilayer as a Replacement for Cadmium Coating

Popov¹,

Kumaraguru²,

Ganesan³

2006

ECS Trans.

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Compositionally Modulated multilayer Zn-Ni deposits were electrodeposited from acidic electrolytes (pH=4.7) by using a potentiostatic sequence. The Zn and Ni composition in the alloy is tailored as a function of distance from the steel substrate. The kinetic parameters controlling the processes at the deposit electrolyte interface were estimated by using electrochemical corrosion techniques in 5% NaCl solution. Open Circuit Potential (OCP), Tafel Polarization (LP) and Electrochemical Impedance Spectroscopy (EIS) studies were used to characterize the deposits.

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“…Several preplating treatments have been used to tent up to 14 to 16 wt pct, and then a reversed trend is enhance the adhesion of a ZnNi coating to the steel subobserved. [4][5][6][7][8][9] The Ni content is set within 10 to 14 wt pct strate. [3,10,[14][15][16][17][18][19][20] Among them, preplating a flash coating as as a compromise between formability and adhesion.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and formability of ZnNi alloy electrodeposited sheet steel

Lin

Lee

Hsieh

2000

Metall Mater Trans A

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ZnNi alloy electrodeposited sheet steels were made from a chloride bath using a high-speed flow cell. A Ni-rich flash coating was deposited first, upon which the ZnNi coating, with Ni contents ranging from 8 to 16 wt pct, was subsequently electrodeposited. It is demonstrated that the Ni content of the coating affects the forming properties and microstructure of the ZnNi coatings. The hardness of the ZnNi coating increased with Ni content, leading to poor formability and inferior adhesion of the coated steels, as evident from the large amount of coating loss during swift cupping and coating peel-off during low-temperature adhesion tests. On the other hand, the friction force between the coated steel and cupping die decreased with increasing Ni content. At low Ni contents of 8 wt pct, the coating had a porous equiaxed grain structure. As the Ni content increased, the coating surface changed to dense faceted morphologies. A pyramid morphology was observed for 16 wt pct ZnNi coatings. An X-ray diffraction (XRD) analysis showed that all coatings containing up to 16 wt pct Ni contained only ␥ phase. Transmission electron microscopy (TEM) observations showed the 8 wt pct Ni coating to have a fine-grained structure, which changed to a columnar structure at 16 wt pct Ni. The formation of the columnar structure is explained by the smaller amount of hydrogen discharge as the bath Ni ion concentration increased.

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Corrosion Resistance of 0-15% Ni-Zn Alloy Electroplated Coatings

Cited by 8 publications

References 8 publications

Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn–5% Al (Galfan) alloy in neutral aerated sodium chloride solution

Application of EIS to assess the effect of rare earths small addition on the corrosion behaviour of Zn–5% Al (Galfan) alloy in neutral aerated sodium chloride solution

A Novel Approach to Deposit Compositionally Modulated Zn-Ni Multilayer as a Replacement for Cadmium Coating

Microstructure and formability of ZnNi alloy electrodeposited sheet steel

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