Role of inclusions in the pitting initiation of pipeline steel and the effect of electron irradiation in SEM

Yafei Wang, Guangxu Cheng, Wei Wu, Yun Li

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

The role of inclusions in the initiation of corrosion pits for a high strength pipeline steel in NaCl solution was investigated. The inclusions with typical compositions of Al-Mg-Ca-S-O were found typically spherical and responsible for the initiation of circular corrosion pits. The possible formation mechanism of the spherical inclusions and their role in the initiation of pitting corrosion are discussed. The electron irradiation in scanning electron microscopy, including the morphology observation and energy-dispersive X-ray spectroscopy test, was found to have significant influence on the pitting susceptibility around the inclusions.

Original languageEnglish
Pages (from-to)252-260
Number of pages9
JournalCorrosion Science
Volume130
DOIs
Publication statusPublished - Jan 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science

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