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Superior resistance to hydrogen damage for selective laser melted 316L stainless steel in a proton exchange membrane fuel cell environment

  • Decheng Kong
  • , Chaofang Dong*
  • , Xiaoqing Ni
  • , Liang Zhang
  • , Hong Luo
  • , Ruixue Li
  • , Li Wang
  • , Cheng Man
  • , Xiaogang Li
  • *Corresponding author for this work
  • University of Science and Technology Beijing
  • Massachusetts Institute of Technology
  • Shanghai Research Institute of Materials
  • Ocean University of China

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of hydrogen charging on the microstructure and durability of traditional wrought and selective laser melted 316L stainless steels (SLMed 316L SSs) in a proton exchange membrane fuel cell was studied. The results showed that superior resistance to hydrogen damage was achieved by the SLMed 316L SS due to minimal transformation of austenite into martensite and that corrosion preferentially occurred at the martensite sites. The defect density of the passive film on the hydrogen-charged wrought 316 L SS was much higher than that of the SLMed counterpart, indicating the excellent passive film stability of the SLMed 316L SS.

Original languageEnglish
Article number108425
JournalCorrosion Science
Volume166
DOIs
StatePublished - 15 Apr 2020
Externally publishedYes

Keywords

  • A. Stainless steel
  • B. In-situ EBSD
  • B. TEM
  • C. Hydrogen damage
  • C. Selective laser melting

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