Corrosion Science and Technology

  • 제17권5호
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  • Pages.231-241
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  • 2018
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  • 1598-6462(pISSN)
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  • 2288-6524(eISSN)
한국부식방식학회 (The Corrosion Science Society of Korea)
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36개월간 국내 옥외폭로시험에 따른 아연도강의 부식거동

Corrosion Behavior of Galvanized Steels with Outdoor Exposure Test in Korea for 36 Months

  • 김기태 (안동대학교 신소재공학부 청정에너지소재기술연구센터) ;
  • 김영식 (안동대학교 신소재공학부 청정에너지소재기술연구센터)
  • Kim, K.T. (Research Center for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University) ;
  • Kim, Y.S. (Research Center for Energy and Clean Technology, School of Materials Science and Engineering, Andong National University)
  • 투고 : 2018.10.11
  • 심사 : 2018.10.29
  • 발행 : 2018.10.31
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초록

Atmospheric corrosion is generally an electrochemical degradation process of metal. It can be caused by various corrosion factors of atmospheric component, weather, and air pollutants. Moisture, particles of sea salts, and sulfur dioxide are major factors in atmospheric corrosion. Galvanizing coating is one of the most efficient ways to protect iron from corrosion by zinc plating on the surface of the iron. Galvanized steels are being widely used in automobiles, building structures, roofing, and other industrial structures due to their high corrosion resistance compared to bare iron. Atmospheric corrosion of galvanized steel has shown complex corrosion behavior depending on coating process, coating thickness, atmospheric environment, and air pollutants. In addition, different types and kinds of corrosion products can be produced depending on the environment. Lifespan of galvanized steels is also affected by the environment. Therefore, the objective of this study was to determine the corrosion behavior of galvanized steel under atmospheric corrosion at six locations in Korea. When the exposure time was increased, content of zinc from GA surface decreased while contents of iron and oxygen tended to increase. On the other hand, content of iron was constant even after 36 months of exposure of GI.

키워드

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피인용 문헌

  1. Control of Galvanic Corrosion Between A516Gr.55 Steel and AA7075T6 Depending on NaCl Concentration and Solution Temperature vol.19, pp.6, 2018, https://doi.org/10.14773/cst.2020.19.6.281
  2. 36개월간 국내 옥외폭로시험에 따른 갈바륨 강판의 대기부식거동 및 표면외관 변화 vol.19, pp.6, 2020, https://doi.org/10.14773/cst.2020.19.6.326