Effects of Electrolysis Conditions on the Formation of Electrodeposited Invar Fe–Ni Alloys with Low Thermal Expansion
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- Fukuda Keisuke
- Department of Materials Process Engineering, Kyushu University
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- Kashiwa Yuki
- Department of Life Science, Kyushu Sangyo University
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- Oue Satoshi
- Faculty of Engineering, Kyushu University
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- Takasu Tomio
- Department of Materials Science, Kyushu Institute of Technology
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- Nakano Hiroaki
- Faculty of Engineering, Kyushu University
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<p>To elucidate the effects of the electrolysis conditions on the formation of electrodeposited invar Fe–Ni alloys with low thermal expansion, Fe–Ni electrodeposition was performed at 10–5000 A·m−2 and 5 × 105 C·m−2 in an agitated solution containing NiSO4, NiCl2, FeSO4, H3BO3, C7H4NNaO3S, and C3H4O4 at 40°C–60°C. In the low-current-density region, the Ni content in the deposits significantly decreased with increasing current density, reached a minimum, and then increased after reaching the diffusion-limiting current density for Fe deposition. With the increasing concentration of FeSO4 in the solution, the Ni content in the deposits decreased in the lower-current-density region, reached a constant at a moderate current density, and then began to increase at higher current density. As a result, the current density range in which the Ni content in the deposits reached a minimum and remained constant became wider with increasing FeSO4 concentration. With the decreasing pH of the solution, since the partial polarization curve for H2 evolution and the total polarization curve shifted to a higher-current-density region, the curve of the Ni content in the deposits as a function of the current density shifted toward a higher current density. The change in the composition of the Fe–Ni alloy deposits because of the electrolysis conditions can be explained by the changes in the total polarization curve and the partial polarization curves for Fe and Ni deposition and H2 evolution.</p>
収録刊行物
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- ISIJ International
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ISIJ International 59 (9), 1632-1641, 2019-09-15
一般社団法人 日本鉄鋼協会
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詳細情報 詳細情報について
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- CRID
- 1390845702279510528
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- NII論文ID
- 130007706711
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- NII書誌ID
- AA10680712
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- ISSN
- 13475460
- 09151559
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- HANDLE
- 10228/00007477
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
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