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<p>To investigate the effect of varying titanium (Ti) content on the atmospheric corrosion resistance of 0.7&#xa0;wt.% Cr weathering steel in an industrial environment, periodic cyclic corrosion tests were conducted on steels with different Ti contents under simulated industrial atmospheric conditions (SO<sub>2</sub>-rich environment). The composition, morphology, and protective properties of the resulting rust layers (RL) were systematically analyzed. The results indicate that the corrosion rate of 0.09Ti steel (3.204&#xa0;g/m<sup>2</sup>&#xa0;h) is lower than that of Ti-free (0Ti) steel (3.540&#xa0;g/m<sup>2</sup>&#xa0;h), demonstrating that Ti addition promotes the formation of a denser rust layer and enhances the corrosion resistance of the steel in such environments. Furthermore, with increasing corrosion duration, the rust layer of Ti-containing steel becomes progressively denser, resulting in an exponential reduction in the corrosion rate. Additionally, Ti promotes the enrichment of Cr within the rust layer, while the presence of sulfates accelerates the transformation of corrosion products, thereby further improving the protective performance of the rust layer on 0.09Ti steel.</p> Graphical Abstract <p></p>

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Investigation of the Corrosion Resistance of Ti-Reinforced 0.7 wt.% Cr Weathering Steel in an Industrial Atmospheric Environment

  • 期刊论文

  • 发表日期：

    2026年1月5日

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  • Chuangwei Wang,
  • Wantong Wang,
  • Zhangqin Wu,
  • Zhengrong Li,
  • Yichong Lei,
  • Han Zeng,
  • Zhenghua Tang,
  • Hui Chen

摘要

To investigate the effect of varying titanium (Ti) content on the atmospheric corrosion resistance of 0.7 wt.% Cr weathering steel in an industrial environment, periodic cyclic corrosion tests were conducted on steels with different Ti contents under simulated industrial atmospheric conditions (SO2-rich environment). The composition, morphology, and protective properties of the resulting rust layers (RL) were systematically analyzed. The results indicate that the corrosion rate of 0.09Ti steel (3.204 g/m2 h) is lower than that of Ti-free (0Ti) steel (3.540 g/m2 h), demonstrating that Ti addition promotes the formation of a denser rust layer and enhances the corrosion resistance of the steel in such environments. Furthermore, with increasing corrosion duration, the rust layer of Ti-containing steel becomes progressively denser, resulting in an exponential reduction in the corrosion rate. Additionally, Ti promotes the enrichment of Cr within the rust layer, while the presence of sulfates accelerates the transformation of corrosion products, thereby further improving the protective performance of the rust layer on 0.09Ti steel.

Graphical Abstract