Corrosion Behavior of Carbon Steels in Hot and Dry Atmosphere Environment at Turpan Area

Q4 Chemical Engineering

腐蚀科学与防护技术 Pub Date : 2014-10-16 DOI:10.11903/1002.6495.2013.277

Huiyan Li, Yue Fang, K. Xiao, Chunyun Guo, C. Dong, L. Xiaogang

引用次数: 0

Abstract

The corrosion behavior and the relevant mechanism of carbon steels Q235 and Q450 exposed for 1 a in the hot and dry atmosphere environment at Turpan area was studied by weight lose test,scanning electron microscopy(SEM),energy dispersive spectra(EDS),X-ray diffraction(XRD) and stereological microscope.The results showed that the corrosion rate of carbon steel Q235 was greater than carbon steel Q450.The corrosion products on the surface of the carbon steels were consisted of α-FeOOH,γ-FeOOH and Fe3O4.The corrosion product of carbon steel Q235 was relatively loose for its rather low ratio of γ-FeOOH to α-FeOOH,whilst the corrosion product of carbon steel Q450 was dense for its higher ratio of γ-FeOOH to α-FeOOH.After removal of corrosion products,it could be observed that the depth and volume of corrosion pits of carbon steel Q235 was larger than those of carbon steel Q450.

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吐鲁番地区干热大气环境下碳钢的腐蚀行为

采用失重试验、扫描电镜(SEM)、能谱仪(EDS)、x射线衍射仪(XRD)和体视显微镜研究了Q235和Q450两种碳钢在吐鲁藏布区干热大气环境中暴露1 a的腐蚀行为及其机理。结果表明，Q235碳钢的腐蚀速率大于Q450碳钢。碳钢表面的腐蚀产物主要为α-FeOOH、γ-FeOOH和Fe3O4。碳钢Q235由于γ-FeOOH与α-FeOOH的比值较低，腐蚀产物较为松散;碳钢Q450由于γ-FeOOH与α-FeOOH的比值较高，腐蚀产物较为致密。去除腐蚀产物后，可以观察到Q235碳钢的腐蚀坑深度和体积都大于Q450碳钢。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

腐蚀科学与防护技术 Chemical Engineering-Chemical Engineering (all)

CiteScore

0.60

自引率

0.00%

发文量

2399

期刊介绍： Corrosion Science and Protection Technology is approved by the General Administration of Press and Publication of the State Council, the Chinese Academy of Sciences, the Chinese Academy of Sciences Institute of Metals organized by the domestic and international public circulation of national periodicals metal surface treatment academic journals. The journal is a professional and technical publication. It reports the scientific and technological achievements in the field of metal corrosion and protection, and publishes research reports, reviews, technical reports, research briefs, failure analysis, experience exchange, etc. The readers are engaged in the field of metal corrosion and protection. The target readers are scientific and technological personnel engaged in metal corrosion and protection and teachers and students of related professional colleges and universities. Corrosion Science and Protection Technology is indexed in CSCD, CSTPCD, CA,MA,SA and other authoritative databases.