Abstract
Fifty three products, mostly carboxylate salts of amines, were evaluated as vapour phase corrosion inhibitors for mild steel. Fifteen compounds showed effectiveness in excess of 90%. Morpholine was the most effective amine and caprylic acid the most effective acid constituent. The effectiveness of ammonium monocarboxylates decreased with increase in the length of the carbon chain of the carboxylic acid. The other carboxylates did not show such a clear trend.
Get full access to this article
View all access options for this article.
References
1.
Skinner
W.
: Corros. Sci. , 1993 , 35 , (5 ), 1491 –1494 .
2.
Rozenfeld
L.
,
PERSIANTSEVA
V. P.
,
TERENTEV
P. B.
, and
POLTEVA
M. N.
Zh. Prikl. Khim. 1961 , 34 , 2047 –2056 .
3.
Balakrishna
K. J.
and
SHARMA
S. D.
Patent IN 10 35 39, Indian Patent Office, New Delhi, India , 1968 .
4.
Vuorinen
E.
,
NGOBENI
P.
,
Van Der Klashorst
G. H.
,
SKINNER
W.
,
DE WET
E.
, and
ERNST
W. S.
Br. Corros. J. , 1994 , 29 , 120 –121 .
5.
Skinner
W.
,
DU PREEZ
F.
, and
VUORINEN
E.
Br. Corros. J. , 1999 , 34 , 151 –152 .
6.
Standard
D
1384 , ASTM, Philadelphia, PA, USA , 1995.
7.
Krieg
A.
: Patent US 28 29 945 , US Patent Office , Washington, DC, USA .
8.
Duncan
D. G.
: Patent DE 21 01 388, German Patent Office, Bonn, Germany , 1971 .
9.
Farbwerke Hoechst
A.-G.
: Patent FR 15 40 150, French Patent Office, Paris, France , 1968 .
10.
Geheeb
N.
: Patent DE 43 26 571, German Patent Office, Bonn, Germany , 1995 .
11.
Kaspary
H.
: Patent DE 21 46 382, German Patent Office, Bonn, Germany , 1973 .
12.
Fujita
T.
and
NAMBU
T.
Patent JP 61 22 71 87, Japanese Patent Office, Tokyo, Japan , 1986 .
13.
Szauer
T.
,
BRANDT
A.
, and
BUDZISZ
D.
Ochr. Koroz. , 1982 , 25 , 150 –153 .
14.
Fujita
T.
and
NAMBU
T.
Patent JP 61 22 71 88, Japanese Patent Office, Tokyo, Japan , 1986 .