Effects of partially substituting cobalt for nickel on the corrosion resistance of a Ni-16Cr-15Mo alloy to aqueous hydrofluoric acid

Yunping Li, Xiuru Fan, Ning Tang, Huakang Bian, Yuhang Hou, Yuichiro Koizumi, Akihiko Chiba

研究成果: Article査読

25 被引用数 (Scopus)

抄録

This study examined the effect of partially substituting cobalt for nickel in Ni-16Cr-15Mo alloy on corrosion resistance to 5.2. M HF acid solution at 100. °C. Microstructural characterisations revealed that cobalt substitution did not have a detrimental effect on corrosion resistance, but rather, it seems to enhance the formation of a compact and thin Mo-rich passive film by selective dissolution of elements. Heat-annealing drastically lowered the corrosion resistance due to Mo-rich precipitate of alloy, which lowered the concentration of Mo in bulk matrix, in particular close to precipitate sections, leading to inhibition of formation of homogenous and compact Mo-rich passive film.

本文言語English
ページ(範囲)101-110
ページ数10
ジャーナルCorrosion Science
78
DOI
出版ステータスPublished - 2014 1

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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