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

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Niobium
Thermooxidation
Stainless Steel
Stainless steel
Oxidation
Air
Steel
Oxides
Precipitates
Volume fraction
Particle size
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Huang, Sheng Yao ; Tsai, Wen Ta ; Pan, Yeong Tsuen ; Kuo, Jui Chao ; Chen, Hsien Wei ; Lin, Dong Yih. / Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air. In: Metals. 2019 ; Vol. 9, No. 9.
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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.",
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Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air. / Huang, Sheng Yao; Tsai, Wen Ta; Pan, Yeong Tsuen; Kuo, Jui Chao; Chen, Hsien Wei; Lin, Dong Yih.

In: Metals, Vol. 9, No. 9, 975, 09.2019.

Research output: Contribution to journalArticle

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T1 - Effect of niobium addition on the high-temperature oxidation behavior of 22Cr25NiWCoCu stainless steel in air

AU - Huang, Sheng Yao

AU - Tsai, Wen Ta

AU - Pan, Yeong Tsuen

AU - Kuo, Jui Chao

AU - Chen, Hsien Wei

AU - Lin, Dong Yih

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AB - 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.

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