Abstract
The codeposition behavior of impurity Fe with Zn was investigated galvanostatically over the current density range 1-1000A/m2 at 40°C In zinc sulfate solutions of pH 3 containing 5 000 ppm of Fe 2+ and other organic or inorganic impurities. Fe showed hardly any codeposition with Zn In solutions containing Fe and either Mo or Ni as impurities. The codeposition of Fe is strongly suppressed in the presence of Zn2+ ions through preferential adsorption of Zn hydroxide on the cathode. In solutions containing Fe and Cu, Fe codeposited with Zn and the Fe content in the deposit decreased with increasing current density. Codeposited Cu promotes Fe deposition by providing active sites that are free of adsorbed Zn hydroxide, In solutions containing Fe and benzyl(dimethyl)(stearyl)ammonium chloride (C18-Benzyl) as an impurity, significant amounts of Fe were codeposited. The cathode potential for Zn deposition was greatly polarized by addition of C18-Benzyl, and the Fe content In deposits increased with increasing current density.
| Original language | English |
|---|---|
| Pages (from-to) | 1029-1033 |
| Number of pages | 5 |
| Journal | isij international |
| Volume | 47 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Sep 17 2007 |
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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
Cite this
Codeposition behavior of impurities during electrogalvanization in sulfate baths in the presence of Fe ions. / Nakano, Hiroaki; Oue, Satoshi; Hisano, Shoji; Kobayashi, Shigeo; Fukushima, Hisaaki.
In: isij international, Vol. 47, No. 7, 17.09.2007, p. 1029-1033.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Codeposition behavior of impurities during electrogalvanization in sulfate baths in the presence of Fe ions
AU - Nakano, Hiroaki
AU - Oue, Satoshi
AU - Hisano, Shoji
AU - Kobayashi, Shigeo
AU - Fukushima, Hisaaki
PY - 2007/9/17
Y1 - 2007/9/17
N2 - The codeposition behavior of impurity Fe with Zn was investigated galvanostatically over the current density range 1-1000A/m2 at 40°C In zinc sulfate solutions of pH 3 containing 5 000 ppm of Fe 2+ and other organic or inorganic impurities. Fe showed hardly any codeposition with Zn In solutions containing Fe and either Mo or Ni as impurities. The codeposition of Fe is strongly suppressed in the presence of Zn2+ ions through preferential adsorption of Zn hydroxide on the cathode. In solutions containing Fe and Cu, Fe codeposited with Zn and the Fe content in the deposit decreased with increasing current density. Codeposited Cu promotes Fe deposition by providing active sites that are free of adsorbed Zn hydroxide, In solutions containing Fe and benzyl(dimethyl)(stearyl)ammonium chloride (C18-Benzyl) as an impurity, significant amounts of Fe were codeposited. The cathode potential for Zn deposition was greatly polarized by addition of C18-Benzyl, and the Fe content In deposits increased with increasing current density.
AB - The codeposition behavior of impurity Fe with Zn was investigated galvanostatically over the current density range 1-1000A/m2 at 40°C In zinc sulfate solutions of pH 3 containing 5 000 ppm of Fe 2+ and other organic or inorganic impurities. Fe showed hardly any codeposition with Zn In solutions containing Fe and either Mo or Ni as impurities. The codeposition of Fe is strongly suppressed in the presence of Zn2+ ions through preferential adsorption of Zn hydroxide on the cathode. In solutions containing Fe and Cu, Fe codeposited with Zn and the Fe content in the deposit decreased with increasing current density. Codeposited Cu promotes Fe deposition by providing active sites that are free of adsorbed Zn hydroxide, In solutions containing Fe and benzyl(dimethyl)(stearyl)ammonium chloride (C18-Benzyl) as an impurity, significant amounts of Fe were codeposited. The cathode potential for Zn deposition was greatly polarized by addition of C18-Benzyl, and the Fe content In deposits increased with increasing current density.
UR - http://www.scopus.com/inward/record.url?scp=34548593935&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34548593935&partnerID=8YFLogxK
U2 - 10.2355/isijinternational.47.1029
DO - 10.2355/isijinternational.47.1029
M3 - Article
AN - SCOPUS:34548593935
VL - 47
SP - 1029
EP - 1033
JO - ISIJ International
JF - ISIJ International
SN - 0915-1559
IS - 7
ER -