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ASTM Selected Technical Papers
Marine Corrosion in Tropical Environments
By
SW Dean
SW Dean
1
Air Products and Chemicals, Inc.
?
Allentown, PA Symposium co-chair and co-editor
Search for other works by this author on:
GH-D Delgadillo
GH-D Delgadillo
2
Universidad del Mayab
?
Merida, Mexico Symposium co-chair and co-editor
Search for other works by this author on:
JB Bushman
JB Bushman
3
Bushman & Associates
?
Medina, OH Symposium co-chair and co-editor
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ISBN-10:
0-8031-2873-8
ISBN:
978-0-8031-2873-6
No. of Pages:
320
Publisher:
ASTM International
Publication date:
2000

Atmospheric corrosion in México is creating significant structural problems in the tropical marine regions of the Gulf of México. This is especially true along the southern Gulf coast where increasing petrochemical pollution is present with the extremely high chloride concentrations resulting from strong onshore winds, and the ever-present high time-of-wetness. The climatic and environmental parameters have been measured, between 1993 and 1998, at 12 coupon exposure sites at marine locations around the Gulf of México. Corrosion classifications for iron, aluminum, copper and zinc have been calculated for each site using mean values of the time-of-wetness, chloride and sulfur dioxide concentrations. The theoretically predicted corrosion rates have been determined from the site classification data, and compared to the 12-month corrosion rates measured by coupon mass loss for the four metals exposed at the same sites. The data show that all sites have at least a C4 classification with most having C5 even though many are located over 1 km from the shoreline. The measured corrosion rates of different metals are often not in good agreement with those predicted using the environmental parameters, providing evidence that other climatic factors such as frequency of precipitation can modify the corrosion rates and distort the correlation with theoretical corrosion predictions and models. Spectroscopic analysis of corrosion products from exposed carbon steel coupons shows that large fractions of akaganeite form in high chloride environments, along with lepidocrocite and goethite. The oxides form in distinct layers on the steel surface. The amount of akaganeite formed is related to some extent by the precipitation frequency which controls if pollutants are regularly flushed from the steel surfaces.

1.
Climates, National Maps of México, Map IV.4.7, (
1992
),
Institute of Geography, University of México
, México City, Mx.
2.
National Meteorological Stations, National Maps of México, Map IV.4.2, (
1992
),
Institute of Geography, University of México
, México City, Mx.
3.
Reyes
,
J.
, “
Influences of the main climatic factors and the quality of the air on the atmospheric corrosion of metals in the southeast coast of the Gulf of México.
” MS Thesis,
University of Veracruzana
,
07
1999
.
4.
Condensed Matter and Materials Physics Web Site,
Old Dominion University
, www.physics. odu. edu/∼cmmp/mx.
5.
Kanuga
,
K. K.
, “
Atmospheric Pollution Potential in the Republic of México
,”
Department of Physics, University of Veracruzana
,
Xalapa, Ver, Mx.
1984
.
6.
Bravo
,
A. H.
and
Torres
,
J. P.
, “
Gulf of México: Contamination and Environmental Impact
,”
University of Campeche
, EPOMEX Scientific Series Vol.
5
,
1996
.
7.
PEMEX-Petrochemical, “
Preliminary Design for the Study of the Effects of the Contamination in the Deterioration of the Metals in the Petrochemical Complexes of the Industrial area of Coatzacoalcos
,”
1994
.
8.
Reyes
,
J.
and
Perez
,
T.
, “
Study of the Influence of the Seasonal Variations in the Rate of Atmospheric Corrosion of the Steel in the City of Campeche
,” Corrosion Program of the Gulf of México,
Autonomous University of Campeche
.
Campeche, Camp. México
,
1998
.
9.
Genescá
,
J.
and
Rodriguez
,
C.
, “
Calibration of the Atmospheric Aggressiveness
,” First International Workshop of Metallic Corrosion. CONACYT-CINVESTAV (Mérida),
Mérida, Yuc. México
,
1990
.
10.
Felliú
,
S.
,
Morcillo
,
M.
, and
Felliu
,
S.
 Jr.
, “
The Prediction of Atmospheric Corrosion from Meteorological and Pollution Parameters-I. Annual Corrosión
.”
Corrosion Science
 0010-938X. Vol.
34
, No.
3
, pp. 403–414,
1993
.
11.
Felliú
,
S.
and
Morcillo
,
M.
, “
Corrosion and Protection of Metals in the Atmosphere.
” Ed.
Bellaterra
S.A.
, Barcelona, Spain,
1982
.
12.
Pereyra
,
D.
,
Natividad
,
M. A.
,
Sosa
,
I.
, and
Reyes
,
J.
, “
Statistical Model to Estimate the Concentration of NaCl and SO2, of Atmospheric Corrosion in Xalapa Veracruz
,”
Méxican Geophysical Union
,
D.F.
,
1996
.
13.
Morup
,
S.
,
Dumesic
,
J. A.
, and
Topsoe
,
H.
,
Applications of Mössbauer Spectroscopy
, Vol
II
,
Cohen
R. L.
, Ed.,
Academic Press
,
New York
,
1980
.
14.
Oh
,
S. J.
,
Cook
,
D. C.
, and
Townsend
,
H. E.
, “
Atmospheric Corrosion of Different Steels in Marine, Rural and Industrial Environments.
Corrosion Science
 0010-938X, Vol.
41
, No.
9
,
1999
, pp. 1687–1702.
15.
Balasubramanian
,
R.
, Old Dominion University, personal communication,
1999
.
16.
Oh
,
S. J.
,
Cook
,
D. C.
, and
Townsend
,
H. E.
, “
Characterization of Iron Oxides Commonly Formed as Corrosion Products on Steel.
Hyperfine Interactions
, Vol.
112
,
1998
, pp. 59–65.
17.
Cook
,
D, C.
,
Oh
,
S. J.
, and
Townsend
,
H. E.
, “
The Protective Layer Formed on Steels after 16 Years of Atmospheric Exposure
,”
Corrosion/98
, paper 343,
1998
,
NACE International
,
Houston, TX.
18.
Cook
,
D. C.
,
Oh
,
S. J.
,
Balasubramanian
,
R.
, and
Yamashita
,
M.
, “
The Role of Goethite in the Formation of the Protective Corrosion Layers on Steels
,”
Hyperfine Interactions
, Vol.
122
,
1999
, pp.59–70.
19.
Balasubramanian
,
R.
,
Cook
,
D. C.
,
Perez
,
T.
, and
Reyes
,
J.
, “
Development of Nano-phase Iron Oxides from Short-term Atmospheric Corrosion of Carbon Steel
,” Corrosion/2000, paper 453,
2000
,
NACE International
,
Houston, TX.
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