Electrodeposition of hard nanocrystalline chrome from aqueous sulfate trivalent chromium bath

Protsenko, V. S.; Данилов, Ф. И.; Gordiienko, V.O.; Kwon, Sin; Kim, M.; Lee, J.Y.

doi:10.1016/j.tsf.2011.07.036

Cited by 49 publications

(26 citation statements)

References 13 publications

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“…Protsenko et al 20 observed that when the thickness of the coatings is not very high (~ 10 µm), the surface contains a large number of spheroids with different diameters (up to several micrometers), which coincides with that observed in Figure 2, in which the films have thicknesses smaller than 10 µm as shown in Table 2.…”

Section: Scanning Electron Microscope (Sem)supporting

confidence: 78%

Selective Solar Surface Solar Based on Black Chromium: Influence of Electrodeposition Parameters in the Absorption of Surfaces

et al. 2019

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The search for the reduction of costs for the implementation of renewable energies implies in the optimization of the parameters of the manufacturing processes of consolidated technologies. Among these technologies are the solar collectors composed of absorber films characterized by high absorption in the spectrum range corresponding to solar radiation and low emittance in the infrared range, allowing an increase in the collector's operating temperature (300 to 700°C). The present work produced selective surfaces based on black chrome absorber films on stainless steel substrate by electrodeposition. The substrates were immersed in a chromium trioxide bath with hexafluorosilicic acid using a Pb-Sn electrode. In the project some parameters of deposition were evaluated (time, distance and voltage) and their influence on the surface roughness of the coatings obtained by correlating them with the absorptions of the produced surfaces. For this, the surfaces produced were characterized by UV-Vis-NIR, profilometry and SEM. The results indicate that the working distance directly influenced the increase of the films absorption and that the influence of the surface roughness on the film absorption is related to the electrodeposition time as the voltage is raised.

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Section: Scanning Electron Microscope (Sem)supporting

confidence: 78%

Selective Solar Surface Solar Based on Black Chromium: Influence of Electrodeposition Parameters in the Absorption of Surfaces

et al. 2019

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“…have been investigated as a complexing agent for Cr 3+ ions to improve the current efficiency for Cr deposition. Furthermore, N-containing compounds such as glycine [10], urea [11][12][13], thiocyanate [14], etc. have been also investigated to improve the surface appearance of Cr deposits.…”

Section: +mentioning

confidence: 99%

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

2012

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Abstract.Ferromagnetic Ni-Cr and Co-Cr alloy thin films were electrodeposited from aqueous solution containing trivalent chromium (Cr 3+ ) ions and glycine. According to the Tafel slopes obtained from the cathode polarization curves for Ni-Cr and Co-Cr alloy deposition, it was estimated that Cr 3+ ions inhibited Ni 2+ and Co 2+ ions from electrodepositing. Ni and Co preferentially electrodeposited rather than Cr and the electrodeposition process of Ni-Cr and Co-Cr was categorized to "normal co-deposition type." At the cathode potential of -1.8 V vs.Ag/AgCl/KCl sat., Ni-9.5%Cr and Co-8.4%Cr alloy deposits were obtained. X-ray diffraction patterns of the electrodeposits revealed that pure Ni and pure Co consist of large crystal grains, while Ni-9.5%Cr and Co-8.4%Cr alloys were composed of a solid solution phase with fine crystal grains. Magnetization of Ni-9.5%Cr and Co-8.4%Cr alloy thin films with fine crystalline phase reached to saturation at ca. 2.5 kOe in perpendicular direction to the film plane while pure Ni and pure Co thin film with large crystal grains were hardly magnetized in the perpendicular direction. Soft magnetic properties were improved with increasing Cr content in the deposits.

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“…Krom (III) banyo çözeltilerinin süreklilik arz eden kararlılığa sahip olmadığı literatürde vurgulanmaktadır [1]. Ayrıca Cr(III) içerikli çözeltiler kullanılarak, krom kaplamaların oldukça zor olduğu bilinmektedir [2]. Aynı zamanda, krom (III) içerikli banyolardan elde edilen krom kaplamalarda, kaplama hızının kaplama zamanı ile hızlı bir şekilde azaldığı, ayrıca akım verimi kadar kaplama hızının da Cr(VI) banyo çözeltilerinde daha yüksek kararlılığa sahip olduğu literatürde belirtilmiştir [2].…”

Section: Introductionunclassified

İzoniazid Çözeltisinde Üç Değerlikli Kromun İndirgemesinin Elektrokimyasal Mekanizması

Gürten

Tehçi²

2017

El-Cezeri Fen Ve Mühendislik Dergisi

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Bu çalışmada, izoniazid (INH) içeren üç değerlikli krom çözeltisinde metalik kromun elektrokaplaması, 40 °C'de camsı karbon elektrot yüzeyinde INH içeren temel banyo çözeltisindeki (TB) üç değerlikli kromun, elektrokimyasal davranışı dönüşümlü voltametri tekniği kullanılarak araştırıldı. Dönüşümlü voltametreden elde edilen sonuçlar, INH içeren TB çözeltisindeki metalik kromun elektrokaplamasının tersinmez bir proses olduğu ve camsı karbon elektrot yüzeyinde Cr(III)'ün indirgenmesinin difüzyon denetimli olduğunu göstermiştir. Ortalama n değeri 40 °C'de 0,314 ve Cr(III)'ün difüzyon katsayısı büyüklüğü 1,06x10-5 cm 2 s-1 olarak hesaplandı.

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Electrodeposition of hard nanocrystalline chrome from aqueous sulfate trivalent chromium bath

Cited by 49 publications

References 13 publications

Selective Solar Surface Solar Based on Black Chromium: Influence of Electrodeposition Parameters in the Absorption of Surfaces

Selective Solar Surface Solar Based on Black Chromium: Influence of Electrodeposition Parameters in the Absorption of Surfaces

Soft magnetic properties of Ni–Cr and Co–Cr alloy thin films electrodeposited from aqueous solutions containing trivalent chromium ions and glycine

İzoniazid Çözeltisinde Üç Değerlikli Kromun İndirgemesinin Elektrokimyasal Mekanizması

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