2024-03-29T10:24:51Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:02001713
2023-01-16T05:11:24Z
1939:1940:1941
The effect of bath pH on electrodeposition and corrosion properties of ternary Fe-W-Zn alloy platings
Park, Jae-Hyeok
Hagio, Takeshi
Kamimoto, Yuki
Ichino, Ryoichi
As a new trial to improve the corrosion resistance of the Fe-W alloy platings, Fe-W alloys incorporating a small amount of Zn, namely novel ternary Fe-W-Zn alloy platings, are prepared by constant current electrolysis using citrate-ammonia baths. In this study, the effects of bath pH on elemental composition, morphology, plating structure, and corrosion resistance of the electrodeposited ternary alloy platings are investigated. The W content of the electrodeposited alloys showed a maximum of 31.5 at.% at pH 8.0 and an inverse correlation was observed between the W content and current efficiency in the investigated pH range. The Zn content tended to decrease with increasing bath pH, and the structure of alloy platings gradually refined along with the increase in the amount of Zn incorporated into the Fe-W alloy. Potentiodynamic polarization test results reveal fine granular structured ternary Fe-W-Zn alloy prepared at pH 8.0, containing approximately 1.6 at.% of Zn, which showed distinctly enhanced corrosion resistance in a 1 M H2SO4 solution compared to binary Fe-W alloy and ternary alloys prepared at pH 6.0, 7.0, and 9.0. It has been found that the bath pH has a great influence on the elemental composition of the ternary alloys, which significantly affects the plating structure and corrosion resistance of the alloy platings.
journal article
Springer
2021-06
application/pdf
Journal of Solid State Electrochemistry
6
25
1901
1913
1432-8488
https://nagoya.repo.nii.ac.jp/record/2001713/files/Manuscript_Revised.pdf
eng
https://doi.org/10.1007/s10008-021-04964-4
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s10008-021-04964-4