Oxidation behavior of Ni-based alloys: Effect of alloying additions

Yaxin Xu, Yuefeng Gu, Jingbo Yan, Fei Sun

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ni-based alloys with Al, Fe, Ti, and Nb additions were designed for the molten-glass environment and the oxidation behavior was evaluated by static oxidation in air at 1,050°C for 20 h. The oxidation kinetics results indicate that the increase in iron content from 6 wt% to 20 wt% improved the oxidation rate of Ni-based alloys and promoted the transition from external oxidation to internal oxidation. The introduction of 5 wt% Al into Ni-based alloys retarded such a detrimental effect of iron by the formation of external alumina. The effect of alloying elements on the oxidation process is discussed based on the kinetics and morphology results.

Original languageEnglish
Pages (from-to)247-255
Number of pages9
JournalCorrosion
Volume73
Issue number3
DOIs
Publication statusPublished - 2017 Mar
Externally publishedYes

Keywords

  • Alloying addition
  • Ni alloys
  • Oxidation kinetics
  • Scanning electron microscopy
  • Thermogravity
  • X-ray diffraction

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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