Abstract
The behaviour of copper in sea water containing sulphides has been examined in the pH range 6·5 to 8·6. The weight loss values show that sulphides increase the corrosion of copper at pH values > 7·2. In aerated solutions with pH values < 7·2 the sulphides cause some inhibition of corrosion due to the formation of a layer of copper sulphides less permeable than the oxychlorides formed when sulphides are absent. The main copper-sulphur compounds formed are Cu2S, Cu1·8S, Cu7S4 and CuS. Cu2O, CuO and Cu3(OH)2(CO3)2 have also been observed, the last at pH 8·6 only.
Get full access to this article
View all access options for this article.
References
1.Zen-ichi-Tanabe , Sumitomo Reikinzoku Gill° , 1965 , 6 (2 ), 23
2.Zen-ichi-Tanabe , J. Japan Inst. Metals , 1964 , 28 (12 ), 874
3.
Rowlands
J. C.
, J. appl. Chem., Lond , 1965 , 15 , 839
4.
Yamada
H.
, &
Nakamura
T.
J. Japan Foundrymen's Soc. , 1964 , 36 (5 ), 470
5.
Trabanelli
G.
,
Zucchi
F.
,
Brunoro
G.
, &
Gilli
G.
La Metallurgia ital. , 1973 , 7/8, 466
6.
Trabanelli
G.
,
Zucchi
F.
,
Bolognesi
G. P.
, &
Brunoro
G.
Corros. Traitements , Prot. Fin. , 1971 , 19 , 439
7.
Akol'zin
P. A.
, &
Bogachev
A. F.
Prot . Metals , 1969 , 5 (3 ), 262
8.
North
R. F.
, &
Pryor
M. J.
Corros. ScL , 1970 , 10 , 297
9.
Blundy
R. G.
, &
Pryor
M. J
ibid. , 1972 , 12, 65
10.
Lymann
J.
, &
Fleming
RH.
.J. mar. Res. , 1940 , 3, 134
11.
Mor
E.
,
Beccaria
A. M.
, &
Poggi
G.
Br. Corros. J. , 1974 , 9 , 53
12.
Tacussel
J.
, Communication presented to 19th Congr. CITCE , Detroit (USA ), 1968
13.Powder Diffraction File Search Manual—Inorganic , 1973 (Joint Committee on Powder Diffraction Standards)
14.
Mor
E. D.
, &
Beccaria
A. M.
Proc. 3rd Int. Congr. Mar. Corros. Fouling , 1972 . (Natn Bur. Stand. Gaithersburg , Maryland, USA )
15.
Mor
E. D.
, &
Beccaria
A. M.
Corrosion , 1974 , 30 (10 ), 354
16.
Mor
E. D.
, &
Beccaria
A. M.
Rassegna Chimica , 1972 , 2 , 55
17.
Budd
M. S.
, &
Bewick
H. A.
Analyt. Chem. , 1952 , 24 , 1536
18.‘Standard Methods for the Examination of Water and Waste-water’. 12th Ed. , 1970 (American Public Health Association)
19.
Home
R. A.
, ‘Marine Chemistry’ , 1969 , p. 281 (New York : Wiley Interscience )
20.
Pourbaix
M.
, ‘Atlas of Electrochemical Equilibria in Aqueous Solution’ , 1966 , P. 384 (Pergamon)
21.
Khairy
E. M.
, &
Darwish
N. A.
Corros. Sci. , 1973 , 13 , 141
22.
Khairy
E. M.
, &
Darwish
N. A.
ibid. , 1973 , 13 , 149
23.
Hack]
L.
, Acta Univ. Szeged , Acta phys. Chem. , 1965 , 11 , 89
24.
Horvath
J.
, &
Hackl
L.
Corros. Scl. , 1965 , 5 , 525
25.
Horvath
J.
,
Hackl
L.
, &
Rauscher
A.
Vine Symp. Eur. Inhibiteurs Corros., Ferrara , 1966 , p. 477 (University of Ferrara)
26.
Latimer
W. M.
, ‘Oxidation Potentials’ , 1956 (New Jersey : Prentice-Hall) Br. Corros. J. , 1975, Vol. 10 , No. 1