J. Mater. Sci. Technol. ›› 2024, Vol. 196: 1-11.DOI: 10.1016/j.jmst.2024.02.023

Special Issue: Biomaterials 2024

• Reserch Article •     Next Articles

Synergistic addition of Cu and Ce enhanced sulfate reducing bacteria-assisted corrosion cracking resistance of 2205 duplex stainless steel

Hanyu Zhaoa,b, Yueyang Gua,b, Xinrui Zhangb, Boxin Weib, Tong Xib,*, Jinlong Zhaob, Chunguang Yangb,*, Ke Yangb   

  1. aSchool of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;
    bInstitute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2023-12-21 Revised:2024-02-21 Accepted:2024-02-21 Published:2024-10-10 Online:2024-03-13
  • Contact: * E-mail addresses: txi@imr.ac.cn (T. Xi), cgyang@imr.ac.cn (C. Yang).

Abstract: The corrosion behaviors of 2205, 2205-Cu, and 2205-Cu-Ce duplex stainless steels (DSSs) were studied under static load in the presence of sulfate-reducing bacteria (SRB). The results demonstrated that the addition of Cu and Ce effectively enhanced the resistance of 2205 DSS to SRB-assisted cracking, and 2205-Cu-Ce DSS exhibited the best corrosion resistance and mechanical properties. The Synergistic addition of Cu and Ce not only inhibited the formation of SRB biofilm but also enhanced the hydrogen-induced cracking resistance of DSSs due to the hydrogen trapping by Cu-rich precipitates.

Key words: Duplex stainless steel, Sulfate-reducing bacteria, Microbiologically influenced corrosion, Stress corrosion, Hydrogen trap