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    Study of Lower Temperature–Sintered Enamel Coating on Steel Bars: Effect of Coating Cycles

    Source: Journal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 009
    Author:
    Dongming Yan
    ,
    Hao Qian
    ,
    Zhihao Huang
    ,
    Fujian Tang
    ,
    Gong Chen
    ,
    Jiahua Deng
    ,
    Yi Liu
    DOI: 10.1061/(ASCE)MT.1943-5533.0003346
    Publisher: ASCE
    Abstract: Enamel coating is a novel type of coating for the corrosion protection of reinforcement in concrete. Recently, improved enamel coating was achieved using low-temperature sintering. This study aims to investigate the effect of coating cycles on the microstructure, adhesion, and corrosion resistance of a lower temperature sintered enamel coating. Enamel coated steel bars with single, double, and triple coatings (SC, DC, and TC, respectively) and uncoated (UC) steel bars were prepared. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray (EDX) spectroscopy, and pull-off and salt spray tests were performed. The results showed that both the DC and TC had fewer defects and exhibited excellent corrosion resistance compared with that of the SC. However, the transition layer formed at the enamel/steel interface for the DC and TC steel bars weakened the coating adhesion. The related corrosion mechanism was illustrated based on two different corrosion modes: corrosion that occurred at holes (COH) and corrosion that occurred at microcracks (COM).
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      Study of Lower Temperature–Sintered Enamel Coating on Steel Bars: Effect of Coating Cycles

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4267280
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    • Journal of Materials in Civil Engineering

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    contributor authorDongming Yan
    contributor authorHao Qian
    contributor authorZhihao Huang
    contributor authorFujian Tang
    contributor authorGong Chen
    contributor authorJiahua Deng
    contributor authorYi Liu
    date accessioned2022-01-30T20:52:46Z
    date available2022-01-30T20:52:46Z
    date issued9/1/2020 12:00:00 AM
    identifier other%28ASCE%29MT.1943-5533.0003346.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4267280
    description abstractEnamel coating is a novel type of coating for the corrosion protection of reinforcement in concrete. Recently, improved enamel coating was achieved using low-temperature sintering. This study aims to investigate the effect of coating cycles on the microstructure, adhesion, and corrosion resistance of a lower temperature sintered enamel coating. Enamel coated steel bars with single, double, and triple coatings (SC, DC, and TC, respectively) and uncoated (UC) steel bars were prepared. X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray (EDX) spectroscopy, and pull-off and salt spray tests were performed. The results showed that both the DC and TC had fewer defects and exhibited excellent corrosion resistance compared with that of the SC. However, the transition layer formed at the enamel/steel interface for the DC and TC steel bars weakened the coating adhesion. The related corrosion mechanism was illustrated based on two different corrosion modes: corrosion that occurred at holes (COH) and corrosion that occurred at microcracks (COM).
    publisherASCE
    titleStudy of Lower Temperature–Sintered Enamel Coating on Steel Bars: Effect of Coating Cycles
    typeJournal Paper
    journal volume32
    journal issue9
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0003346
    page9
    treeJournal of Materials in Civil Engineering:;2020:;Volume ( 032 ):;issue: 009
    contenttypeFulltext
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