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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 922Preparatory Electrodeposition Process for High...

Preparatory Electrodeposition Process for High Purity Bulk Aluminum

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Abstract:

Electrodeposition for Al from a dimethylsulfone (DMSO₂) bath was consecutively performed, applying two types of current waveforms such as direct current and pulsed current, to investigate the effect of a current type on the preparatory electrodeposition (pre-electrodeposition) process. Electrodeposited Al from a DMSO₂ bath has a nanograined structure and high strength. However, the electrodeposits showed no plastic deformability due to the large amount of sulfur and chlorine which were incorporated into the electrodeposits as sulfide and chloride. Therefore, we obtained high purity Al from a DMSO₂ bath using pre-electrodeposition process, which could decrease sulfur and chlorine contents without using additives. The sulfur and chlorine contents of electrodeposits, obtained from a DMSO₂ bath applying both types current, both decreased to approximately 0.1 at.%. This result indicated that the waveforms made no difference in pre-electrodeposition process.

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Periodical:

Advanced Materials Research (Volume 922)

Pages:

237-241

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.922.237

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Online since:

May 2014

Authors:

Yudai Hanaoka*, Satoshi Ono, Isao Matsui, Yorinobu Takigawa, Tokuteru Uesugi, Kenji Higashi

Keywords:

Aluminum (Al), Dimethylsulfone Bath, Electrodeposition, Impurity, Mechanical Property

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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