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Title: 組成変調型積層Co-Ni 合金めっきの製鋼用連続鋳造鋳型への適用
Other Titles: Application of Composition-Modulated Co-Ni Laminated Alloy Plating To Continuous Steel Casting Molds
Authors: 石田, 幸平  KAKEN_name
長瀧, 敬行  KAKEN_name
中出, 卓男  KAKEN_name
森河, 務  KAKEN_name
三宅, 正男  kyouindb  KAKEN_id
平藤, 哲司  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: ISHIDA, Kohei
NAGATAKI, Takayuki
HIRATO, Tetsuji
Keywords: Co-Ni Alloy Plating
Continuous Casting Mold
Issue Date: 1-Oct-2018
Publisher: 表面技術協会
Journal title: 表面技術
Volume: 69
Issue: 10
Start page: 458
End page: 463
Abstract: With the aim of extending the lifetime of molds used for continuous steel casting, we developed a composition-modulated Co-Ni alloy plating with alternately laminated layers of different compositions. Alloy films with laminated structures comprising few-micrometer-thick layers were formed using a single plating bath by periodically altering the agitation intensity in the bath during plating. The hardness of the as-plated composition-modulated Co-Ni alloy film was 350 HV, which was higher than that of a conventional non-laminated Co-Ni alloy plating film. Heat treatment slightly decreased the hardness. Nevertheless, the composition-modulated film exhibited higher tensile strength and higher hardness than the conventional alloy film after heat treatment at temperatures of 200-700 ℃. The breaking elongation of the composition-modulated film increased to 30% after heat treatment at 700 ℃. Finally, the composition-modulated Co-Ni alloy plating was applied to a mold surface, which was then used for continuous steel casting. It exhibited excellent resistance against crack formation by thermal shock resulting from contact with molten steel during continuous casting.
Rights: © 2018 一般社団法人 表面技術協会
DOI(Published Version): 10.4139/sfj.69.458
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