Electrodeposition behavior and wear resistance of Co-Ni alloys from sulfamate baths for continuous steel casting mold

Akira Kubota, Yasuhiko Tsubota, Hiroaki Nakano, Satoshi Oue, Shigeo Kobayashi, Tetsuya Akiyama, Hisaaki Fukushima

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

Electrodeposition behavior of Co-Ni alloys, which has been applied in the coating of continuous steel casting mold, was studied by measuring the polarization curves using a Cu substrate in sulfamate baths of various compositions at 55 °C under galvanostatic conditions. The wear resistance of electroplated Co-Ni film was also investigated by sliding wear test of ring-on-plate type at 300 °C. The results obtained were as follows: (1) In a wide range of bath composition, Co-Ni alloy deposition shows a feature of anomalous codeposition in which the less noble Co is electrodeposited in preference to Ni. The Ni deposition is greatly polarized when compared to the Co deposition from their single baths. Therefore, Co is deposited in preference to Ni, though Ni deposition from the alloy plating bath is more largely depolarized than that from its single bath. (2) The wear resistance of Co-Ni coating is improved with increasing Co content more than 50% in the deposits. The higher Co content in the deposit is, the thicker oxide film mainly composed of CoO and Co3O4 is formed on the surface of Co-Ni coating, which improves sliding property to prevent adhesive wear between Co-Ni coating and press ring.

元の言語英語
ページ(範囲)728-734
ページ数7
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
85
発行部数10
DOI
出版物ステータス出版済み - 1 1 1999

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Steel castings
wear resistance
Electrodeposition
electrodeposition
Wear resistance
baths
steels
Coatings
coatings
Deposits
Wear of materials
sliding
deposits
Chemical analysis
Plating
Thick films
wear tests
Oxide films
rings
Adhesives

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

これを引用

Electrodeposition behavior and wear resistance of Co-Ni alloys from sulfamate baths for continuous steel casting mold. / Kubota, Akira; Tsubota, Yasuhiko; Nakano, Hiroaki; Oue, Satoshi; Kobayashi, Shigeo; Akiyama, Tetsuya; Fukushima, Hisaaki.

:: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 巻 85, 番号 10, 01.01.1999, p. 728-734.

研究成果: ジャーナルへの寄稿記事

Kubota, Akira ; Tsubota, Yasuhiko ; Nakano, Hiroaki ; Oue, Satoshi ; Kobayashi, Shigeo ; Akiyama, Tetsuya ; Fukushima, Hisaaki. / Electrodeposition behavior and wear resistance of Co-Ni alloys from sulfamate baths for continuous steel casting mold. :: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 1999 ; 巻 85, 番号 10. pp. 728-734.
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abstract = "Electrodeposition behavior of Co-Ni alloys, which has been applied in the coating of continuous steel casting mold, was studied by measuring the polarization curves using a Cu substrate in sulfamate baths of various compositions at 55 °C under galvanostatic conditions. The wear resistance of electroplated Co-Ni film was also investigated by sliding wear test of ring-on-plate type at 300 °C. The results obtained were as follows: (1) In a wide range of bath composition, Co-Ni alloy deposition shows a feature of anomalous codeposition in which the less noble Co is electrodeposited in preference to Ni. The Ni deposition is greatly polarized when compared to the Co deposition from their single baths. Therefore, Co is deposited in preference to Ni, though Ni deposition from the alloy plating bath is more largely depolarized than that from its single bath. (2) The wear resistance of Co-Ni coating is improved with increasing Co content more than 50{\%} in the deposits. The higher Co content in the deposit is, the thicker oxide film mainly composed of CoO and Co3O4 is formed on the surface of Co-Ni coating, which improves sliding property to prevent adhesive wear between Co-Ni coating and press ring.",
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AU - Akiyama, Tetsuya

AU - Fukushima, Hisaaki

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