Relationship between susceptibility to embrittlement and hydrogen permeation current for UNS G10190 steel in 5%NaCl solution containing H 2 S

Abstract

The sulphide stress corrosion cracking (SSCC) behaviour of UNS GI0190 steel in a 5% sodium chloride (NaCl) solution containing hydrogen sulphide (H₂S) was studied by slow strain rate tensile testing (SSRT), scanning electron microscopy (SEM), and the electrochemical hydrogen permeation technique. The results revealed different cracking mechanisms and hydrogen permeation currents I_H for UNS G10190 steel sheet in different concentrations of H₂S solution. The susceptibility to SSCC of UNS G10190 steel in a 5%NaCl solution containing H₂S was evaluated from the permeation current I_H (μA) which depended on the H₂S concentration C (ppm) according to the relationship I_H = 24·5C^0·36. It is shown that the use of an electrochemical hydrogen permeation probe is a practical way to assess susceptibility to SSCC.

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References

Mancia

: Corros. Sci., 1987, 27, (10/11), 1225.

Troiano

A. R.

: Trans. ASM, 1960, 52, 54.

Y. L.

: Proc. Conf. Asia Corrosion 88, Singapore, 1988, Institute of International Research, NACE, Singapore Corrosion Association, Paper 30.

Cheng

Y. F.

and DU

Y. L.

: Corrosion, 1993, 49, 776.

China Patent No. 95111971.011, 1995.

Devanathan

M. A. V.

and z. STACHURSKI: Proc. R. Soc. (London), 1962, A270, 90.

Zhang

X. Y.

and DU

Y. L.

: Corros. Sci. Prot. Technol., 1996, 8, 158.

Beachem

C. D.

: Metall. Trans., 1972, 13, 437.

Cheng

Y. F.

and DU

Y. L.

: Corrosion, 1993, 49, 776.

10.

Bastien

, Veron

, and ROQUES

: Mem. Etud. Sci. Rev. Métall., 1958, 55, 310.

11.

Y. L.

: Proc. 12th Int. Corrosion Cong., Houston, TX, USA, September 1993, NACE, 2383.

12.

Asahl

Ueno

, and YONEZAWA

: Corrosion, 1994, 50, 537.