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The effect of nanosized NbC precipitates on electrochemical corrosion behavior of high-strength low-alloy steel in 3.5%NaCl solution

  • Jia Li
  • , Junsheng Wu
  • , Zihao Wang
  • , Shiqi Zhang
  • , Xiaoguang Wu
  • , Yunhua Huang*
  • , Xiaogang Li
  • *Corresponding author for this work
  • University of Science and Technology Beijing
  • CAS - Ningbo Institute of Material Technology and Engineering

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of nanosized NbC precipitates on electrochemical corrosion behavior of high-strength low-alloy (HSLA) steels in 3.5%NaCl solution has been investigated by the means of precipitate modulation, microstructure observation, electrochemical and immersion tests. The results showed that NbC precipitates markedly enhance the corrosion resistance of the H-contained steel, and the mechanism is that the plentiful and highly dispersed nanosized NbC particles acting as massive and effective hydrogen traps play a decisive role in the resistance to hydrogen activated corrosion. Moreover, it is evident that the inhibiting effect is related with the amount, size and distribution of the precipitates, and the optimized microstructures and precipitated phases improve the mechanical properties and resistance to hydrogen activated corrosion of HSLA steel.

Original languageEnglish
Pages (from-to)22175-22184
Number of pages10
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number34
DOIs
StatePublished - 24 Aug 2017
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Electrochemical corrosion
  • HSLA steel
  • Hydrogen diffusion
  • NbC

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