The effect of atmospheric pollution on materials damage

Syed, Shameer

doi:10.1002/maco.201206708

Cited by 24 publications

(40 citation statements)

References 23 publications

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“…The corrosion resistance of AISI 304 in seawater belongs to the outstanding category. This result is in line with the other study [7]. The existence of (18 to 20) % chromium, caused AISI 304 resists to the corrosive environment [4].…”

Section: Resultssupporting

confidence: 82%

Analysis of AISI 304 Tensile Strength as an Anchor Chain of Mooring System

Hamidah

Wati

Hamdani

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The background of this research is the use of mild steel (i.e., St37) as anchor chain that works on the corrosive environment of seawater which is possible to decrease its tensile strength. The longer soaked in seawater, the more significant the lowering of its tensile strength. Anchor chain needs to be designed by considering its tensile strength and corrosion resistance, so it's able to support mooring system well. The primary purpose of this research is obtaining the decreasing of stainless steel 304 (AISI 304) tensile strength which is corroded by seawater as anchor chain of the mooring system. It is also essential to obtain the lifetime of AISI304 and St37 as anchor chain with the same load, the corrosion rate of AISI 304, and St 37 in seawater. The method which was employed in this research is an experiment with four pieces of stainless steel AISI 304, and of St 37 corrosion testing samples, six pieces of stainless steel 304, and six pieces of St 37 for tensile testing samples. The result of this research shows that seawater caused stainless steel AISI 304 as anchor chain has decreased of tensile strength about 1.68 % during four weeks. Also, it indicates that AISI 304 as anchor chain has a lifetime about 130 times longer than St 37. Further, we found that the corrosion rate of stainless steel 304 in seawater is 0.2042 mpy in outstanding category, while the St 37 samples reached up to 27.0247 mpy ranked as fair category. This result recommends that AISI 304 more excellence than St 37 as anchor chain of the mooring system.

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Section: Resultssupporting

confidence: 82%

Analysis of AISI 304 Tensile Strength as an Anchor Chain of Mooring System

Hamidah

Wati

Hamdani

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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“…This may be due to the calm sea and vegetation along the shoreline which inhibits the air to carry the airborne salts from the sea . The concentration of sulfur dioxide was very high and fall in highest category P 3 which may be due to the emission activities of heavy cargoes and dumping of coal on the shore …”

Section: Resultsmentioning

confidence: 99%

“…Corrosivity of marine test sites has been studied worldwide, and the environmental parameters are reported …”

Section: Resultsmentioning

confidence: 99%

“…. It is a well‐recognized fact that the process of atmospheric corrosion depends on environmental parameters that include relative humidity (RH), temperature (T), sunlight, period and amount of precipitation and direction of the wind …”

Section: Resultsmentioning

confidence: 99%

“…Galvanized steel is well known for its high resistance to atmospheric corrosion and has a wide range of application from the automotive and marine industries to fluid transport systems . Galvanized steel corrosion has been studied by a vast number of researchers throughout the world . Pattern of atmospheric corrosion was mainly determined by corrosivity of environment and corrosion resistant nature of materials which in turn depend upon various meteorological factors, pollutant levels and protective nature of corrosion products …”

Section: Introductionmentioning

confidence: 99%

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Atmospheric corrosion patterns of electrogalvanized mild steel at east southern coastal areas of CPEC

Jamil

Bano

Castaño

et al. 2018

Materials & Corrosion

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The primary goal of the study was to establish corrosivity category in accordance with ISO 9223 norm of the two test stations located at National Institute of Oceanography (NIO) and Karachi Port Trust (KPT) along the east southern coastal route of China Pakistan Economic Corridor (CPEC) project in Pakistan. Electrogalvanized mild steel test coupons were exposed for a period of 12 months from May 2014 to May 2015. Results indicated that for both NIO and KPT test stations the corrosivity category in term of corrosion rate (C5+) was not in agreement with the corrosivity category (C5) established by using the pollution category and time of wetness. Corrosion kinetic parameters n and correlation coefficient (R2) obtained for NIO were 1.58 and 0.98 and for KPT 1.43 and 0.95 respectively. Scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDS) showed the presence of simonkolleite at NIO while zincite and hydrozincite at KPT. Fourier transform infrared (FTIR) spectroscopy showed that the typical corrosion products formed on both test stations were simonkolleite and hydrozincite. XRD showed the presence of zincite at both test stations and hydrozincite only at KPT.

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Atmospheric corrosion of copper exposed to different environments in the region of Valparaiso, Chile

Vera

Araya

Bagnara

et al. 2016

Materials & Corrosion

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onThis article presents the results obtained for the atmospheric corrosion of copper after 3 years of exposure at different sites within the region of Valparaiso, Chile. Frames were installed with samples at seven sites located close to the coast and inland. They were accompanied by devices to measure atmospheric chloride and sulphur dioxide content and weather stations to obtain data on temperature, humidity, amount of rainfall and wind speed. The results show a correlation between corrosion rate and the environmental and meteorological conditions in the area, and with the morphology and electrochemical properties of the corrosion product formed on the copper surface. The sites gave corrosivity categories of C5, C4, C3 and C2. The behaviour of corrosion rate was modelled using power function models and neural networks. The main corrosion products were cuprite, posnjankite, covelite and atacamite. O (M) Covelite, CuS (t) Cuprite, Cu 2 O (M) Covelite, CuS (t) Valparaíso Cuprite, Cu 2 O (M) Covelite, CuS (M) Atacamite, Cu 2 Cl(OH) 3 (M) Brochantite, Cu 4 (SO 4 )(OH) 6 (t) Atacamite, Cu 2 Cl(OH) 3 (M) Covelite, CuS (M) Cuprite, Cu 2 O (t) Thenardite, Na 2 SO 4 (t) M, major; m, minor; t, traces.

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The effect of atmospheric pollution on materials damage

Cited by 24 publications

References 23 publications

Analysis of AISI 304 Tensile Strength as an Anchor Chain of Mooring System

Analysis of AISI 304 Tensile Strength as an Anchor Chain of Mooring System

Atmospheric corrosion patterns of electrogalvanized mild steel at east southern coastal areas of CPEC

Atmospheric corrosion of copper exposed to different environments in the region of Valparaiso, Chile

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