Effect of Brighteners on the Deposits in the Nickel Citrate Electroplating

Authors developed a new electric nickel plating bath using of citric acid (citrate bath) instead of boric acid in a Watts bath", in order to cope with severe legal regulation on drainage of boron in Japan. The citrate bath has a feature in that free nickel ions are present in a sufficient amoun...

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Veröffentlicht in:Hyōmen gijutsu 2004, Vol.55(2), pp.153-154
Hauptverfasser: DOI, Tadashi, MIZUMOTO, Kazunari, TANAKA, Shin-ichi, TANAKI, Toshiyuki, YAMASHITA, Tsugito
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container_end_page 154
container_issue 2
container_start_page 153
container_title Hyōmen gijutsu
container_volume 55
creator DOI, Tadashi
MIZUMOTO, Kazunari
TANAKA, Shin-ichi
TANAKI, Toshiyuki
YAMASHITA, Tsugito
description Authors developed a new electric nickel plating bath using of citric acid (citrate bath) instead of boric acid in a Watts bath", in order to cope with severe legal regulation on drainage of boron in Japan. The citrate bath has a feature in that free nickel ions are present in a sufficient amount, and about 0.1 M of nickel citrate complexes is present in the bath, and has excellent cathode current efficiency and bath pH buffering performance like the Watts bath''. Further, the citrate bath can provide fine deposits having a crystal structure nearly at random and the hardness of the deposits is about twice as large as the deposits from the Watts bath". Such characteristics may be attributable to that nickel is electrodeposited from the complexes. In this study, effect of brighteners on the deposits in the citrate bath have been studied, in comparison with those in the Watts bath, under the same plating conditions.
doi_str_mv 10.4139/sfj.55.153
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source J-STAGE Free; EZB-FREE-00999 freely available EZB journals
subjects Applied sciences
Brightener
Citrate Bath
Citric Acid
Exact sciences and technology
Metallic coatings
Metals. Metallurgy
Nickel Electroplating
Production techniques
Surface treatment
Watts Bath
title Effect of Brighteners on the Deposits in the Nickel Citrate Electroplating
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