Sage Journals: Discover world-class research

Abstract

The corrosion behaviour of four nickel free austenitic stainless steels were investigated in 0·5M H₂SO₄ and 0·5M H₂SO₄ plus 0·4M NaCl solutions by means of potentiodynamic and potentiostatic anodic polarisation testing. The performances of the nickel free alloys are compared to those of an experimental intermediate nickel alloy (4%Ni) and a standard AISI 304 steel grade. Once passivity was reached all alloys displayed similar current densities i _p in 0·5M H₂SO₄, independent from alloying. Mo and Cu were shown to be beneficial in decreasing the active dissolution currents and i _crit values. The commercial AISI 304 steel displayed superior resistance to pit initiation during potentiodynamic testing, and AISI 304 steel displayed the highest E _pit value of all alloys tested. When tested potentiostatically the N and Mo alloyed nickel free alloys showed excellent resistance to pit initiation and growth. The dominant effect of N was associated with repassivation of incipient pits, while Mo appeared to act at an earlier stage, suppressing initiation.

Keywords

NICKEL FREE AUSTENITIC STAINLESS STEEL GENERAL CORROSION PITTING CORROSION

Get full access to this article

View all access options for this article.

References

Indian Stainless Steel Development Association available at:http://www.stainlessindia.org.

Schmalt

Berns

and Gavriljuk

: Proc. Int. Conf. on ‘High nitrogen steels’, (ed. Akdut

.), 437–446; 2004

Bad Harzburg

GRIPS media GmbH.

Milititsky

de Wispelaere

Akdut

Speer

J. G.

and de Cooman

B.C.

: Metall. Mater. Trans. A 2006 37A 2117.

Tomota

Nakano

Xia

and Inoue

: Acta Mater., 1998 46, (9), 3099.

Frechard

Redjaimia

Lach

and Lichtenberger

: Proc. Int. Conf. on ‘High nitrogen steels’, Zurich, SwitzerlandMarch 2003 Institute of Metallurgy291–300.

Sudesh

T. L.

Wijesinghe

and Blackwood

D.J.

: Corros. 2007 49 1755.

Merello

Botana

F. J.

Botella

Matres

M. V.

and Marcos

: Corros. Sci., 2003 45 909.

Siebert

O. W.

: Mater. Perform., 1981 20, 39.

Belfrouh

Masson

Vouagner

de Becdelievre

A. M.

Prakash

N.S.

and Audouard

J.P.

: Corros. Sci., 1996 38, (10), 1639.

10.

Ujiro

Satoh

Staehle

R. W.

and Smyrl

W. H.

: Corros. 2001 43 2185.

11.

Ameer

M. A.

Fekry

A. M.

and El-Taib Heakal

: Electrochim. Acta 2004 50 43.

12.

Baba

Kodama

and Katada

: Corros. Sci., 2002 44 2393.

13.

Kemp

van Bennekom

and Robinson

F. P. A.

: Mater. Sci. Eng. A 1995 A199, 183.

14.

Olefjord

and Wegrelius

: Corros. Sci., 1996 38 (7) 1203.

15.

Lim

Y. S.

Kim

J. S.

Ahn

S. J.

Kwon

H. S.

and Katada

: Corros. Sci., 2001 43 53.

16.

Park

K. J.

H. Y.

and S:

H.S.

Proc. 61st Annu. Conf. & Expos. on ‘Corrosion’ San Diego, CA, USA March 2006 NACE11.

17.

Jargelius-Petterson

R. F. A.

: Corros. Sci., 1999 41 1639.

18.

Hänninen

: Proc. Int. Conf. on ‘High nitrogen steels’, (ed. Hänninen

.), 479–488; 1998

Stafa-Zurich

TTP Publications.

19.

Ilevbare

G. O.

and Burstein

G. T.

: Corros. Sci 2001 43 485.

20.

Y. C.

Ives

M. B.

and Clayton

C. R.

: Corros. Sci., 1993 35 89.

Corrosion properties of nickel free austenitic stainless steels in 0·5M H 2 SO 4 and 0·5M H 2 SO 4 plus 0·4M NaCl

Abstract

Keywords

Get full access to this article

References