Correlation between indoor and outdoor corrosion tests for coal train body steel in a coal medium environment

Jia-liang Song, Jun-hang Chen, Pan Yi, Na-na Chen, Zhao-liang Li, Kui Xiao

钢铁研究学报(英文版) ›› 2022, Vol. 29 ›› Issue (9) : 1495-1504.

PDF(5506 KB)
欢迎访问《钢铁研究学报(英文版)》官方网站!今天是 2025年8月4日 星期一
PDF(5506 KB)
钢铁研究学报(英文版) ›› 2022, Vol. 29 ›› Issue (9) : 1495-1504. DOI: 10.1007/s42243-022-00758-8
论著

Correlation between indoor and outdoor corrosion tests for coal train body steel in a coal medium environment

  • Jia-liang Song1,2, Jun-hang Chen1,2, Pan Yi3, Na-na Chen1,2, Zhao-liang Li1,2, Kui Xiao1,2
作者信息 +

Correlation between indoor and outdoor corrosion tests for coal train body steel in a coal medium environment

  • Jia-liang Song1,2, Jun-hang Chen1,2, Pan Yi3, Na-na Chen1,2, Zhao-liang Li1,2, Kui Xiao1,2
Author information +
文章历史 +

摘要

Q345B carbon steel as well as Q450NQR1 and S500AW weathering steels were subjected to outdoor exposure corrosion tests in coal environments and indoor periodic immersion accelerated corrosion tests with a simulated coal leaching solution. The corrosion kinetics were studied by the weight loss method, and the corrosion morphology and corrosion product composition were observed and analyzed by scanning electron microscopy, energy-dispersive spectroscopy and X-ray diffraction. Afterward, correlation analysis of the indoor and outdoor tests was carried out by the gray correlation analysis method. The results show that the relationship between the corrosion weight loss and corrosion time of the three steels conforms to follow the exponent power law. In particular, Q450NQR1 steel has the best corrosion resistance. The types of corrosion products and the distribution of elements in the rust layer of the three steels are similar in the indoor and outdoor tests. The gray correlation degrees of the three steels in the indoor and outdoor tests are all greater than 0.6; thus, the two corrosion tests have a good correlation. Based on this, the accelerated simulation test method of the coal leaching solution is determined, and life prediction models of three steels in coal leaching solution are established to simulate the corrosion of the bottom board and side board.

Abstract

Q345B carbon steel as well as Q450NQR1 and S500AW weathering steels were subjected to outdoor exposure corrosion tests in coal environments and indoor periodic immersion accelerated corrosion tests with a simulated coal leaching solution. The corrosion kinetics were studied by the weight loss method, and the corrosion morphology and corrosion product composition were observed and analyzed by scanning electron microscopy, energy-dispersive spectroscopy and X-ray diffraction. Afterward, correlation analysis of the indoor and outdoor tests was carried out by the gray correlation analysis method. The results show that the relationship between the corrosion weight loss and corrosion time of the three steels conforms to follow the exponent power law. In particular, Q450NQR1 steel has the best corrosion resistance. The types of corrosion products and the distribution of elements in the rust layer of the three steels are similar in the indoor and outdoor tests. The gray correlation degrees of the three steels in the indoor and outdoor tests are all greater than 0.6; thus, the two corrosion tests have a good correlation. Based on this, the accelerated simulation test method of the coal leaching solution is determined, and life prediction models of three steels in coal leaching solution are established to simulate the corrosion of the bottom board and side board.

关键词

Coal train body steel / Coal environment / Corrosion / Outdoor exposure test / Indoor acceleration test Correlation

Key words

Coal train body steel / Corrosion / Indoor acceleration test Correlation / Coal environment / Outdoor exposure test

图表

引用本文

导出引用
Jia-liang Song, Pan Yi, Kui Xiao, . Correlation between indoor and outdoor corrosion tests for coal train body steel in a coal medium environment[J]. 钢铁研究学报(英文版), 2022, 29(9): 1495-1504 https://doi.org/10.1007/s42243-022-00758-8
Jia-liang Song, Pan Yi, Kui Xiao, et al. Correlation between indoor and outdoor corrosion tests for coal train body steel in a coal medium environment[J]. Journal of Iron and Steel Research International, 2022, 29(9): 1495-1504 https://doi.org/10.1007/s42243-022-00758-8

PDF(5506 KB)

8

Accesses

0

Citation

Detail

段落导航
相关文章

/