模拟低碳钢在人工海水中的腐蚀

IF 1.4 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
Y. M. Pusparizkita, Vivi A. Fardilah, Christian Aslan, J. Jamari, A. Bayuseno
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引用次数: 0

摘要

本实验室研究了碳钢在人工海水(ASW)中的耐蚀性,采用钢片悬挂在封闭的ASW玻璃反应器上,体积与试样面积比为0.20 ~ 0.40 mL/mm2。这些薄片在室温下不搅拌的情况下浸泡在ASW中不同的时间(7天和14天)。进一步,通过失重和电化学分析方法确定了腐蚀速率。在碳钢中暴露7天和14天后,腐蚀速率分别为0.2780和0.3092 mmpy。根据这一结果,表面似乎没有受到氧化物的保护。电化学阻抗谱仪在恒电位/恒流模式下,结合EDX分析,预测了氧还原的演化过程。浸渍第7天的样品氧含量较高,浸渍第14天的样品氧含量略低。采用x射线衍射(XRD)和扫描电镜(SEM)对其腐蚀产物的表面形貌和组成进行了表征。暴露后碳钢表面出现了由铁锈矿物赤铁矿、绢云母和磁铁矿产生的腐蚀产物。这一结果可以深入了解海洋环境中使用的低碳钢的腐蚀行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Understanding of low-carbon steel marine corrosion through simulation in artificial seawater
The current laboratory experiments investigated the corrosion resistance of carbon steel in artificial seawater (ASW) using the steel coupons hanging on a closed glass reactor of ASW with volume-to-specimen area ratios ranging from 0.20 to 0.40 mL/mm2. These coupons were immersed in ASW for varying time durations (7 and 14 d) at room temperature without agitation. Further, the corrosion rates based on the weight loss and electrochemical analytical method were determined. Following exposure to carbon steel for 7 and 14 d, corrosion rates were 0.2780 mmpy and 0.3092 mmpy, respectively. The surfaces appeared to be not protected by oxides based on this result. The electrochemical impedance spectrometer in potentiostatic/galvanostatic mode, in conjunction with EDX analysis, predicted the evolution of oxygen reduction. The 7th-day immersion sample had a higher oxygen content, and the 14th-day immersion sample had a slightly lower oxygen content. Methods of X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterized the surface morphology and composition of their corrosion product. Corrosion products derived from rust minerals hematite, lepidocrocite and magnetite appeared to cover the carbon steel surface after exposure. This result can get insight into the corrosion behavior of low-carbon steel used in marine environments.
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来源期刊
AIMS Materials Science
AIMS Materials Science MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
3.60
自引率
0.00%
发文量
33
审稿时长
4 weeks
期刊介绍: AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.
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