Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air

Sheng Yao Huang, Wen Ta Tsai, Yeong Tsuen Pan, Jui Chao Kuo, Hsien Wei Chen, Dong Yih Lin

Research output: Contribution to journalArticle

Abstract

The oxidation behavior of 22Cr25NiWCoCu stainless steel with 0–0.86 wt.% Nb addition was investigated at 900 °C in air. With an increase in Nb addition, the volume fraction and average particle size of Nb (C, N) increased, but the grain size decreased. The results of grazing incidence X-ray diffraction indicated that the steels with Nb additions promoted Cr2O3 formation. After 10–100 h of oxidation, Cr depletion occurred at the region with Nb (C, N) precipitates because of its high Cr consumption rate, leading to Fe oxide generation. Finally, after 100 h of oxidation, the outer layer of Fe2O3 and the inner layer of (Cr, Fe, Mn)3O4 were formed.

Original languageEnglish
Article number975
JournalMetals
Volume9
Issue number9
DOIs
Publication statusPublished - 2019 Sep

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Fingerprint Dive into the research topics of 'Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air'. Together they form a unique fingerprint.

  • Cite this