Fundamental Study on Corrosion Protection Effect with Sacrificial Anode for Corroded Steel Members using Porous Sintered Plate and Fiber Sheet in an Atmospheric Environment

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  • Ishihara Shuji
    Research & Development Hq. Tamano Technology Center, Mitsui Engineering & Shipbuilding Co., Ltd. Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyushu University
  • Kainuma Shigenobu
    Department of Civil Engineering, Faculty of Engineering, Kyushu University
  • Kinoshita Masaru
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyushu University
  • Uchida Daisuke
    Ship & Ocean Project Hq. Business Development Dept., Mitsui Engineering & Shipbuilding Co., Ltd.
  • Kaneko Akira
    Surface Innovation Group, Nikkei Research & Development Center, Nippon Light Metal Company, Ltd.
  • Yamauchi Takao
    Production Division, Saidaiji Plant, Japan Exlan Co., Ltd.

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Other Title
  • 多孔質焼結板と繊維シートを用いた腐食鋼部材の大気犠牲陽極防食効果に関する基礎的研究
  • タコウシツ ショウケツバン ト センイ シート オ モチイタ フショクコウ ブザイ ノ タイキ ギセイ ヨウキョク ボウショク コウカ ニ カンスル キソテキ ケンキュウ

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Abstract

In authors' previous research, a corrosion preventing method composed of porous sintered Al‐Zn plate and cross-linking chemical fiber sheet applying to non-corroded steel members in an atmospheric environment was proposed. The objective of this research is to investigate the effect of the corrosion preventing method on remained corrosion products of corroded steel members. Laboratory tests and atmospheric exposure tests were carried out using the model specimen applied the corrosion preventing method for the steel with corrosion product.<br>From the laboratory test results, reductive reaction of the corrosion product due to electrons supplied from the sacrificial anode was confirmed. In addition, the products layer peeled off, and then the plate surfaces were finally exposed by repeating of renewed corrosion reaction of the steel surface as the cathode, Fe3O4. Regarding atmospheric exposure tests, the effects of the composition of the sintered plate and the surface preparation on the corrosion products were clarified. In addition to this, the corrosion prevention in an atmospheric environment was also experimentally verified.

Journal

  • Zairyo-to-Kankyo

    Zairyo-to-Kankyo 63 (12), 609-615, 2014

    Japan Society of Corrosion Engineering

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