Electrochemical corrosion of FV520B stainless steel in solutions bearing hydrogen bromide and acetic acid at high temperature from 130 to 200 °C

Li, Youyou; Cao, Tieshan; Wang, Dongying; Zhao, Jie; Bao, Cuimin; Song, Y. Q.; Meng, Xianming; Cheng, Chuan

doi:10.1080/1478422x.2021.1933309

Cited by 1 publication

(1 citation statement)

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“…It was illustrated that the corrosion weight loss or corrosion rate was increased significantly with the increasing temperature [20,21]. Nonetheless, sometimes if the temperature exceeded a certain limit, the corrosion rate would reduce as well [22]. However, the influence of temperature on the corrosion behavior and corrosion mechanism of the galvanic corrosion of copper-aluminum laminated composite plates was still unknown.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature on the Corrosion Behavior and Corrosion Resistance of Copper–Aluminum Laminated Composite Plate

Zhang

Cheng

et al. 2022

Materials

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In this paper, the effect of temperature on the corrosion behavior and corrosion resistance of the copper–aluminum laminated composite plates were investigated by salt-spray corrosion, potential polarization curve and electrochemical impedance spectroscopy. Moreover, the microstructure of the copper–aluminum laminated composite plate after salt-spray corrosion was observed by scanning electron microscope, and X-ray photoelectron spectroscopy was used to study the composition of corrosion product. The results revealed that the corrosion products of the copper–aluminum laminated composite plate were Al2O3 and AlOOH. Due to the galvanic corrosion of the copper–aluminum laminated composite plate, the cathode underwent oxygen absorption corrosion during the corrosion process; therefore, the presence of moisture and the amount of dissolved oxygen in the corrosive environment had a great influence on the corrosion process. The increasing temperature would evaporate a large amount of moisture, resulting in the corrosion product—aluminum oxide dehydrated and covered the surface of the material in the process of salt-spray corrosion, which played a role in protecting the material. Therefore, the corrosion resistance of the copper–aluminum laminated composite plate first decreased and then increased. In the salt-spray corrosion environment, the corrosion resistance of the copper–aluminum laminated composite plate reached the lowest at 45 °C, and its corrosion rate was the fastest, at 0.728 g/m2·h. The electrochemical corrosion occurred in the solution, and the impact was small; however, in addition to the protective corrosion products, the ion mobility in the solution also had a certain influence on the corrosion rate, and the ionic activity increased with the increase of temperature. Therefore, the corrosion resistance of the copper–aluminum laminated composite plate gradually decreased as the temperature increased, and its corrosion resistance was the worst at 50 °C.

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Section: Introductionmentioning

confidence: 99%