Role of mill scale on corrosion behavior of steel rebars in mortar

Kotaro Doi, Sachiko Hiromoto, Tadashi Shinohara, Koichi Tsuchiya, Hideki Katayama, Eiji Akiyama

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The role of mill scale on the corrosion behavior of steel rebars in mortar was studied using Hyperbaric-Oxygen Accelerated Corrosion Tests (HOACT) and polarization measurements. Defects of mill scale deteriorated passivity of rebars when mortar and saturated Ca(OH)2 solution contained chloride. Localized corrosion beneath mill scale with defects was responsible for the acceleration of depassivation. SEM observations and Raman spectroscopy measurements revealed that a Fe3O4 layer initially formed under the mill scale and further corrosion resulted in migration of Fe ions through the defects and formation of a rust layer mainly composed of α- and γ-FeOOH on the mill scale.

本文言語English
論文番号108995
ジャーナルCorrosion Science
177
DOI
出版ステータスPublished - 2020 12

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料科学(全般)

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