Barrel plating process specification for undercoating with copper cyanate

Han, Kyong Ho; Lee, Seung Bum; Hong, In Kwon

doi:10.1016/j.jiec.2011.11.066

Cited by 6 publications

(2 citation statements)

References 11 publications

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“…13 Barrel plating is an electroplating method in which objects to be plated are placed in a nonconductive barrel containing an electrolytic bath, and electrodeposition is performed while rotating the barrel to stir the objects and the bath. 14,15 Owing to the large number of small objects being electroplated in one batch, barrel plating can significantly improve the productivity of Al electroplating. Barrel plating using aqueous baths has long been utilized for electroplating various metal materials such as Cu, 15 Ni, 16 and Zn.…”

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“…14,15 Owing to the large number of small objects being electroplated in one batch, barrel plating can significantly improve the productivity of Al electroplating. Barrel plating using aqueous baths has long been utilized for electroplating various metal materials such as Cu, 15 Ni, 16 and Zn. 17 However, reports on barrel plating with Al are limited; 11,18 no systematic investigation has been reported on Al barrel plating using ILs and the plating conditions required to obtain a uniform Al coating are unclear.…”

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Aluminum Barrel Plating on Steel Bolts Using Chloroaluminate Ionic Liquids

Miyake¹,

Ikenoue²,

Hirato³

2022

J. Electrochem. Soc.

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Al electroplating using ionic liquids (ILs) has been extensively studied for various potential applications, including corrosion-resistant coatings. When Al electroplating is to be performed commercially for many small objects, adopting the barrel plating method is reasonable for improving productivity and reducing manufacturing costs. However, little is known about the barrel-plating conditions for the formation of Al coatings. In this study, the barrel plating conditions for forming Al coatings on steel bolts using ILs composed of 1-ethyl-3-methylimidazolium chloride (EMIC) and aluminum chloride (AlCl3) were investigated. Hull cell tests showed that the IL with an AlCl3/EMIC molar ratio of 1.2 has a higher covering power than the IL with a higher AlCl3 ratio. Barrel plating using the IL with an AlCl3 ratio of 1.2 enabled complete coverage of the bolt with the Al coating. The uniformity of the Al coating on the bolts was further improved by adjusting the rotation speed of the barrel. Furthermore, a simple pretreatment procedure for steel bolts was proposed to obtain an electrodeposited Al coat that adheres well to steel bolts.

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