Effect of Polyethylene Glycol on the Morphology of Zn Electrodeposited on Steel Sheet

Nakano, Hiroaki; Oue, Satoshi; Miki, Takashi; Kobayashi, Shígeo; Fukushima, Hisaaki

doi:10.2355/isijinternational.46.106

Cited by 28 publications

(11 citation statements)

References 17 publications

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“…Consequently, the intensity of diffuse reflection is strong in the case of Zn deposited with preferred {0001} plane orientation, resulting in an increase in the lightness of Zn. 24) However, in this study, the lightness increased with preadsorption despite the decrease in {0001} plane orientation. This suggests that the size of Zn platelet crystals has a greater effect on the lightness than crystal orientation.…”

Section: Crystal Orientation Of Deposited Zncontrasting

confidence: 60%

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

et al. 2014

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Zn electrodeposition was performed galvanostatically on steel sheets at 1 500 A/m 2 in an agitated sulfate solution at 40°C to investigate the effect of preadsorption of organic additives on the lightness and morphology of Zn. The organic additives employed were classified into two types: 1) polyethylene glycol (PEG), gelatin, and stearyl dimethylbenzyl ammonium chloride (SDBAC) (Type I), which exhibit a polarization effect for Zn deposition; and 2) saccharin and sodium lauryl sulfate (Type II), which exhibit no polarization effect for Zn deposition. The platelet crystals of deposited Zn were reduced in size with preadsorption of all the organic additives considered. The observed decrease in the size of Zn platelet crystals with preadsorption is attributed to both an increase in the overpotential for Zn deposition and a decrease in the epitaxial growth of Zn on steel substrates. The preferred orientation of the {0001} Zn basal plane significantly decreased because of an increase in Zn deposition overpotential owing to preadsorption of PEG and gelatin, and the orientation slightly decreased with saccharin and sodium lauryl sulfate in spite of the absence of a polarization effect on Zn deposition. The surface roughness of deposited Zn decreased with preadsorption of organic additives with the exception of SDBAC. This is due to a decrease in the size of Zn platelet crystals. The lightness of deposited Zn was increased by preadsorption of organic additives with the exception of SDBAC. Because Zn deposited nonuniformly with preadsorption of SDBAC, the surface roughness of Zn increased and the lightness decreased.

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Section: Crystal Orientation Of Deposited Zncontrasting

confidence: 60%

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

et al. 2014

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“…It is reported that the grains of the deposits consist of many particles with a size of several tens of nm. [16][17][18][19][20] In this study, the particle size determined using a half width of X-ray diffraction pattern appears to correspond to the size of each particle forming the deposited Ni grains. As shown in Fig.…”

Section: Resultsmentioning

confidence: 69%

Effect of Current Density and Organic Additives on the Texture and Hardness of Ni Electrodeposited from Sulfamate and Watt’s Solutions

et al. 2010

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Ni electrodeposition was galvanostatically conducted over the current density range 500-2000 A/m 2 in unagitated sulfamate and Watt's solutions at 323 and 313 K, respectively, to examine the effect of current density and organic additives on the texture, crystal orientation, and hardness of the deposited Ni. The overpotential for Ni deposition increased by the addition of polyethylene glycol (PEG) or saccharin in both sulfamate and Watt's solutions. The degree of increase in the overpotential in a PEG-containing solution was larger than that in a saccharincontaining solution. Ni deposited from an additive-free solution showed a morphology of field oriented texture type with the preferred orientation of the {100} plane, while Ni obtained from a PEG-or saccharin-containing solution had the unoriented dispersed type without a preferred orientation in the region of some current densities. The region of the current density that resulted in the unoriented dispersed type in Watt's solution was larger than that in a sulfamate solution. The particle size of the deposited Ni decreased with the addition of PEG and saccharin. The hardness of the deposited Ni increased with PEG and saccharin, and was higher for the unoriented dispersed texture than for the field oriented texture. In additive-containing solutions, the hardness of Ni deposited from Watt's solution was higher than that from a sulfamate solution.

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“…15,16) The suppression of Zn normal lateral growth appears to have an effect on the morphology of deposited Zn. The decrease in the size and the increase in inclination of Zn platelet crystals by the preadsorption, as shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

Effect of Preadsorption of Polyethylene Glycol on the Appearance and Morphology of Electrogalvanized Steel Sheets

et al. 2009

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Effect of Polyethylene Glycol on the Morphology of Zn Electrodeposited on Steel Sheet

Cited by 28 publications

References 17 publications

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

Effect of Current Density and Organic Additives on the Texture and Hardness of Ni Electrodeposited from Sulfamate and Watt’s Solutions

Effect of Preadsorption of Polyethylene Glycol on the Appearance and Morphology of Electrogalvanized Steel Sheets

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Effect of Polyethylene Glycol on the Morphology of Zn Electrodeposited on Steel Sheet

Cited by 28 publications

References 17 publications

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

Effect of Preadsorption of Organic Additives on the Appearance and Morphology of Electrogalvanized Steel Sheets

Effect of Current Density and Organic Additives on the Texture and Hardness of Ni Electrodeposited from Sulfamate and Watt&rsquo;s Solutions

Effect of Preadsorption of Polyethylene Glycol on the Appearance and Morphology of Electrogalvanized Steel Sheets

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Effect of Current Density and Organic Additives on the Texture and Hardness of Ni Electrodeposited from Sulfamate and Watt’s Solutions