Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Galvanic corrosion behavior of hot-dip Al and 55Al–Zn coatings applied to steel bolted joints in atmospheric environments
https://orcid.org/0000-0002-3525-4241
Highlights The galvanic corrosion behavior of hot-dip Al and 55Al-Zn coatings applied to bolted joints was studied. Electrochemical tests explain the corrosion behavior and mechanism of galvanic corrosion in different metal coatings applied for the bolted joints. Long-term exposure tests were carried out to evaluate the corrosion behavior in actual application. A new generation alloy coating was developed by comparing it with the traditional Zn coating.
Abstract Atmospheric corrosion is one of the most critical issues in steel structures. To improve the structure's durability and reduce its cost, hot-dip coatings are a significant method for steel protection. The corrosion behavior of Al-based hot-dip coatings has been extensively studied. Galvanic corrosion usually occurs when steel members are coated with different hot-dip coatings and placed in direct contact. In this study, galvanic corrosion of an Al coating in contact with a 55Al–Zn coating in an atmospheric environment was investigated through electrochemical and exposure tests. The galvanic corrosion and its mechanism were studied based on open circuit potential (OCP), galvanic current, and X-ray diffraction (XRD) analyses. This study verified the galvanic corrosion of bolt joints in the actual application by the long-term exposure test. The results suggests that 55Al–Zn coating is a good substitute for Zn coating used for bolted joints in contact with Al-coated steel plate.
Galvanic corrosion behavior of hot-dip Al and 55Al–Zn coatings applied to steel bolted joints in atmospheric environments
https://orcid.org/0000-0002-3525-4241
Highlights The galvanic corrosion behavior of hot-dip Al and 55Al-Zn coatings applied to bolted joints was studied. Electrochemical tests explain the corrosion behavior and mechanism of galvanic corrosion in different metal coatings applied for the bolted joints. Long-term exposure tests were carried out to evaluate the corrosion behavior in actual application. A new generation alloy coating was developed by comparing it with the traditional Zn coating.
Abstract Atmospheric corrosion is one of the most critical issues in steel structures. To improve the structure's durability and reduce its cost, hot-dip coatings are a significant method for steel protection. The corrosion behavior of Al-based hot-dip coatings has been extensively studied. Galvanic corrosion usually occurs when steel members are coated with different hot-dip coatings and placed in direct contact. In this study, galvanic corrosion of an Al coating in contact with a 55Al–Zn coating in an atmospheric environment was investigated through electrochemical and exposure tests. The galvanic corrosion and its mechanism were studied based on open circuit potential (OCP), galvanic current, and X-ray diffraction (XRD) analyses. This study verified the galvanic corrosion of bolt joints in the actual application by the long-term exposure test. The results suggests that 55Al–Zn coating is a good substitute for Zn coating used for bolted joints in contact with Al-coated steel plate.
Galvanic corrosion behavior of hot-dip Al and 55Al–Zn coatings applied to steel bolted joints in atmospheric environments
https://orcid.org/0000-0002-3525-4241
Highlights The galvanic corrosion behavior of hot-dip Al and 55Al-Zn coatings applied to bolted joints was studied. Electrochemical tests explain the corrosion behavior and mechanism of galvanic corrosion in different metal coatings applied for the bolted joints. Long-term exposure tests were carried out to evaluate the corrosion behavior in actual application. A new generation alloy coating was developed by comparing it with the traditional Zn coating.
Abstract Atmospheric corrosion is one of the most critical issues in steel structures. To improve the structure's durability and reduce its cost, hot-dip coatings are a significant method for steel protection. The corrosion behavior of Al-based hot-dip coatings has been extensively studied. Galvanic corrosion usually occurs when steel members are coated with different hot-dip coatings and placed in direct contact. In this study, galvanic corrosion of an Al coating in contact with a 55Al–Zn coating in an atmospheric environment was investigated through electrochemical and exposure tests. The galvanic corrosion and its mechanism were studied based on open circuit potential (OCP), galvanic current, and X-ray diffraction (XRD) analyses. This study verified the galvanic corrosion of bolt joints in the actual application by the long-term exposure test. The results suggests that 55Al–Zn coating is a good substitute for Zn coating used for bolted joints in contact with Al-coated steel plate.
Galvanic corrosion behavior of hot-dip Al and 55Al–Zn coatings applied to steel bolted joints in atmospheric environments
Gao, Yang (Autor:in) / Kainuma, Shigenobu (Autor:in) / Yang, Muye (Autor:in) / Ishihara, Shuji (Autor:in) / Inoue, Daichi (Autor:in)
30.07.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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