Beneficial Effect of Impurity Sulfur on High-Temperature Steam Oxidation of High Chromium Ferritic Steels

Abstract:

Article Preview

The effect of S in steels on high-temperature steam oxidation resistance was investigated with respect to the content and the state in high Cr ferritic steels. The beneficial sulfur effect on high-temperature steam oxidation resistance was verified in high Cr ferritic steels. It was considered that Cr was enriched in the vicinity of the segregated S on the specimen surface because of a strong affinity between Cr and S atoms, resulting in the easy formation of the passive Cr2O3 oxide layer on the surface even after the steam oxidation test for a short time. It was found that the precipitated S operated more effectively to the improvement of the steam oxidation resistance compared to the solid-solution state of S in the steels. Furthermore, the sulfur effect on the high temperature steam oxidation resistance was related strongly to the amount of dissolution hydrogen in the high Cr ferritic steels.

Info:

Periodical:

Materials Science Forum (Volumes 522-523)

Edited by:

Shigeji Taniguchi, Toshio Maruyama, Masayuki Yoshiba, Nobuo Otsuka and Yuuzou Kawahara

Pages:

147-154

DOI:

10.4028/www.scientific.net/MSF.522-523.147

Citation:

Y. Murata et al., "Beneficial Effect of Impurity Sulfur on High-Temperature Steam Oxidation of High Chromium Ferritic Steels", Materials Science Forum, Vols. 522-523, pp. 147-154, 2006

Online since:

August 2006

Export:

Price:

$35.00

[1] M. Morinaga, Y. Murata, R. Hashizume and Y. Sawaragi: ISIJ Int., 41(2001) 314-316.

[2] Y. Murata, M. Morinaga, R. Hashizume Y. Sawaragi and M. Nakai: Proc. 9th Int. Conf. on Creep and Fracture of Engineering Materials and Structures and 3rd EPRI Conf. on Advances in Materials Technology for Fossil Power Plants, ed. by R. Viswanathan et. al., (The Inst. Mater. London, 2001) pp.367-374.

[3] M. Nakai, Y. Murata, M. Morinaga, R. Hashizume and Y. Sawaragi: Mater. Sci. Forum, 426-432(2003) 1029-1034.

[4] M. Nakai, Y. Murata, M. Morinaga and R. Hashizume: Mater. Trans., 44(2003) 1830-1838.

[5] Y. Murata, M. Morinaga, N. Inagaki and M. Nakai: Mater. Trans., 43(2002) 1258-1259.

[6] F.H. Scott: Mater. Sci. Technol. 5(1989) 734-740.

[7] A. Paúl, S. Elmrabet, L.C. Alves, M.F. da Silva, J.C. Soares and J.A. Odriozola: Nucl. Instrum. Methods. Phys. Res. B, 181(2001) 394-398.

[8] I. Kvernes, M. Oliveira and P. Kofstad: Corros. Sci. 17 (1977) 237-252.

[9] K. Nakagawa, Y. Matsunaga and T. Yanagisawa: Mater. High Temp. 18 (2001) 51-56.

[10] K. Nakagawa, Y. Matsunaga and T. Yanagisawa: Mater. High Temp. 20 (2003) 67-73.

[11] K. Oikawa, H. Mitsui, H. Ohtani and K. Ishida: ISIJ Int., 40(2000) 182-190.

[12] M. Hansen: Constitution of binary alloys, 2. ed., prepared with the cooperation of Kurt Anderko, Metallurgy and Metallurgical Engineering Series, (McGraw-Hill, New York, 1958) pp.704-708.

[13] K. Ichitani, M. Kanno: Sci. Technol. Adv. Mater. 4 (2003), 545-551.

In order to see related information, you need to Login.