Atmospheric Corrosion Performance of Engineering Materials in India
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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Title |
Atmospheric Corrosion Performance of Engineering Materials in India
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Creator |
Natesan, M.
Muralidharan, S. Palaniswamy, N. |
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Subject |
Corrosion Science and Engineering
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Description |
Industrial growth during the last decade
has made it necessary to evaluate
installations, equipment, and
metallic and nonmetallic structures
exposed to the atmosphere. The atmosphere
has also become more contaminated
and therefore more aggressive to
materials exposed to an enormous quantity
of gases.
India has mainly three seasons in a
year: rainy (June through September,
southwest monsoon, and October
through November, northeast monsoon),
summer (April through July), and winter
(mid-October through February). The
country has a coastline of more than
7,500 km, the reason for the high airborne
salinity in many areas. The air
quality in big cities has decreased significantly.
A variety of industrial processes,
such as the production of iron and steel,
utility factories, and crude oil processing,
pollute the atmosphere by the release of
sulfur dioxide (SO2). SO2 can also be
emitted by natural disasters or means
such as volcanoes, sea spray, plankton,
and rotting vegetation. Overall, 69.4% of
SO2 is produced by industrial combustion
and >90% of the sulfur in the atmosphere
is of human origin.1
Steel, zinc, galvanized metals, and
aluminum are found to be very sensitive
to acidic pollutants, especially SO2 and
acid rains.2 No systematic research on
atmospheric corrosion of the steel and
other metals has been done in India.
Before 1970, little quantitative atmospheric
corrosion data had been published
in India.3 More recently, results
from several studies have been reported.4-7
Ramana, et al.8 have reported the characterization
of rust phases formed on low
carbon steel exposed to a natural marine
environment.
We made a study on the kinetics of
atmospheric corrosion of mild steel (MS),
zinc, galvanized iron (GI), and aluminum
at 10 exposure stations in India9 and the results were compared with global levels.
In continuation of this work, the present
program was undertaken and the results
obtained on MS, Zn, GI, and Al corrosion
in natural atmospheres are reported.
The results are discussed as a function of
exposure time and pollution levels.
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Date |
2010
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cecri.csircentral.net/522/1/2010-115.pdf
Natesan, M. and Muralidharan, S. and Palaniswamy, N. (2010) Atmospheric Corrosion Performance of Engineering Materials in India. NACE International, 49 (8). |
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Relation |
http://cecri.csircentral.net/522/
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