Technique for Estimating Atmospheric Corrosion Rate of Zinc in Coastal Areas

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  • Miyata Yoshimori
    NTT Telecommonications Service Support Headquarters Technical Assistance and Support Center
  • Takekoshi Ryoji
    NTT Telecommonications Service Support Headquarters Technical Assistance and Support Center
  • Takazawa Hisayoshi
    NTT Telecommonications Service Support Headquarters Technical Assistance and Support Center

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Other Title
  • 海岸地域における亜鉛の大気腐食速度の推定
  • カイガン チイキ ニ オケル アエン ノ タイキ フショク ソクド ノ スイテ

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Abstract

In coastal areas, sea-salt particles floating in the air above the ocean are blown toward by the wind and adhere to the surface of metals, severely corroding them. Japan is an island country and thus, salt damage is the most impotant factor affecting atmospheric corrosion. However, sea-salt-particle level decreases with increasing distance from the coast. Other factors such as temperature and precipitation also affect the corrosion rate. Therefore, it was difficult to determine the corrosion rates at each area. A method has been developed for estimating the atmospheric corrosion rate of zinc caused by airborne salinity. The method estimates the corrosion rate from easily available data such as temperature, humidity, precipitation, direction and velocity of wind, and distance from the coast. The accuracy of the method was ±30% compared with the results of field tests.

Journal

  • CORROSION ENGINEERING

    CORROSION ENGINEERING 38 (10), 540-545, 1989

    Japan Society of Corrosion Engineering

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