Corrosion behavior of carbon steels coupled to stainless steels in sea water

Hirotaka Sato, Toru Yamaji, Jun'ichi Sakai

    研究成果: Article査読

    抄録

    To evaluate the corrosion risk of offshore steel structures at submerged zone caused by stainless steel sheathing and cathodic protection failures, it is essential to grasp the degree of the carbon steel-stainless steel galvanic corrosion. The objective in this study was to clarify the effect of area ratio of stainless steel coupled to carbon steel on corrosion behavior in sea water. As a result, stainless steels promote galvanic corrosion, but the degree of accelerated corrosion was much smaller than that estimated from the area ratio. Calcareous deposits had formed on the surface of stainless steels during galvanic tests in seawater. The calcareous deposits appeared to diminish the diffusion of the dissolved oxygen and diminish the cathodic reaction of oxygen reduction on the stainless steel surface.

    本文言語English
    ページ(範囲)183-187
    ページ数5
    ジャーナルZairyo to Kankyo/ Corrosion Engineering
    64
    5
    出版ステータスPublished - 2015

    ASJC Scopus subject areas

    • 電気化学
    • 材料化学
    • 金属および合金
    • 表面、皮膜および薄膜

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