Corrosion resistance enhancement of Ni-Resist ductile iron by laser surface alloying

Dawen Zeng, Changsheng Xie, Qianwu Hu, Kam Chuen Yung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)

Abstract

The corrosion resistance of Ni-resist ductile iron was improved after laser surface alloying with pure copper. The corrosion current of laser-surface-alloyed samples is about one order of magnitude lower than the untreated sample. The principal reason for the enhanced corrosion resistance of the laser-surface-alloyed samples is believed due to formation of a Cu2O oxide passive film on the alloyed surface in the chloride solution, although the refinement of the eutectic phase and elimination of the graphite spheres can also contribute to improve their corrosion resistance.
Original languageEnglish
Pages (from-to)651-657
Number of pages7
JournalScripta Materialia
Volume44
Issue number4
DOIs
Publication statusPublished - 20 Mar 2001

Keywords

  • Corrosion resistance
  • Laser surface alloying
  • Ni-Resist ductile iron

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this