Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere

Masaaki Nakai; Yoshinori Murata; Masahiko Morinaga; Ryokichi Hashizume; Yoshiatsu Sawaragi

doi:10.4028/www.scientific.net/msf.426-432.1029

Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere

Masaaki Nakai, Yoshinori Murata, Masahiko Morinaga, Ryokichi Hashizume, Yoshiatsu Sawaragi

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

Microalloying effects of sulfur are investigated systematically on the steam oxidation resistance of austenitic steels and ferritic steels. It is found that the presence of S, about 50ppm, in the steels improves remarkably the steam oxidation resistance of both austenitic steels and high Cr ferritic steels. This result indicates that ferritic steels with excellent steam oxidation resistance can be designed and developed by just leaving S at an impurity level in them without detriment to the mechanical strength. However, the S effect is not so remarkable in low Cr ferritic steels as in high Cr ferritic steels. This fact implies that the S effect is related strongly to the stability of Cr₂O₃ in high temperature steam conditions.

Original language	English
Pages (from-to)	1029-1034
Number of pages	6
Journal	Materials Science Forum
Volume	426-432
Issue number	2
DOIs	https://doi.org/10.4028/www.scientific.net/msf.426-432.1029
Publication status	Published - 2003
Externally published	Yes
Event	Thermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain Duration: 2003 Jul 7 → 2003 Jul 11

Keywords

Austenitic Steel
CrO
Evaporation
Ferritic Steel
Impurity Effect
Steam Oxidation
Sulfur

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere. / Nakai, Masaaki; Murata, Yoshinori; Morinaga, Masahiko; Hashizume, Ryokichi; Sawaragi, Yoshiatsu.

In: Materials Science Forum, Vol. 426-432, No. 2, 2003, p. 1029-1034.

Research output: Contribution to journal › Conference article › peer-review

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title = "Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere",

abstract = "Microalloying effects of sulfur are investigated systematically on the steam oxidation resistance of austenitic steels and ferritic steels. It is found that the presence of S, about 50ppm, in the steels improves remarkably the steam oxidation resistance of both austenitic steels and high Cr ferritic steels. This result indicates that ferritic steels with excellent steam oxidation resistance can be designed and developed by just leaving S at an impurity level in them without detriment to the mechanical strength. However, the S effect is not so remarkable in low Cr ferritic steels as in high Cr ferritic steels. This fact implies that the S effect is related strongly to the stability of Cr2O3 in high temperature steam conditions.",

keywords = "Austenitic Steel, CrO, Evaporation, Ferritic Steel, Impurity Effect, Steam Oxidation, Sulfur",

author = "Masaaki Nakai and Yoshinori Murata and Masahiko Morinaga and Ryokichi Hashizume and Yoshiatsu Sawaragi",

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T1 - Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere

AU - Nakai, Masaaki

AU - Murata, Yoshinori

AU - Morinaga, Masahiko

AU - Hashizume, Ryokichi

AU - Sawaragi, Yoshiatsu

PY - 2003

Y1 - 2003

N2 - Microalloying effects of sulfur are investigated systematically on the steam oxidation resistance of austenitic steels and ferritic steels. It is found that the presence of S, about 50ppm, in the steels improves remarkably the steam oxidation resistance of both austenitic steels and high Cr ferritic steels. This result indicates that ferritic steels with excellent steam oxidation resistance can be designed and developed by just leaving S at an impurity level in them without detriment to the mechanical strength. However, the S effect is not so remarkable in low Cr ferritic steels as in high Cr ferritic steels. This fact implies that the S effect is related strongly to the stability of Cr2O3 in high temperature steam conditions.

AB - Microalloying effects of sulfur are investigated systematically on the steam oxidation resistance of austenitic steels and ferritic steels. It is found that the presence of S, about 50ppm, in the steels improves remarkably the steam oxidation resistance of both austenitic steels and high Cr ferritic steels. This result indicates that ferritic steels with excellent steam oxidation resistance can be designed and developed by just leaving S at an impurity level in them without detriment to the mechanical strength. However, the S effect is not so remarkable in low Cr ferritic steels as in high Cr ferritic steels. This fact implies that the S effect is related strongly to the stability of Cr2O3 in high temperature steam conditions.

KW - Austenitic Steel

KW - CrO

KW - Evaporation

KW - Ferritic Steel

KW - Impurity Effect

KW - Steam Oxidation

KW - Sulfur

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Effect of impurity sulfur on the stability of Cr oxides formed on both austenitic and ferritic steels in a high-temperature steam-atmosphere

Abstract

Keywords

ASJC Scopus subject areas

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