Mechanism of Atmospheric Corrosion of Copper in the Presence of Submicron Ammonium Sulfate Particles at 300 and 373 K

Lobnig, R. E.; Frankenthal, R. P.; Siconolfi, D. J.; Sinclair, J. D.; Stratmann, M.

doi:10.1149/1.2059261

Cited by 50 publications

(40 citation statements)

References 4 publications

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“…Weak band at 1632 cm −1 is OH deformation vibration. The band characteristic of cupric sulfate [65] is also observed around 1110 cm −1 . The absorption band at 625 cm −1 [66] is assigned to cuprite (Cu 2 O).…”

Section: Ftir Spectroscopymentioning

confidence: 84%

Corrosion behavior of metals and alloys in marine-industrial environment

Natesan

Selvaraj

Manickam³

et al. 2008

Science and Technology of Advanced Materials

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This work deals with atmospheric corrosion to assess the degrading effects of air pollutants on ferrous and non-ferrous metals and alloys, which are mostly used as engineering materials. An exposure study was conducted in the Tuticorin port area located on the east coast of South India, in the Gulf of Mannar with Sri Lanka to the southeast. Common engineering materials, namely mild steel, galvanized iron, Zn, Al, Cu and Cu-Zn alloys (Cu-27Zn, Cu-30Zn and Cu-37Zn), were used in the investigation. The site was chosen where the metals are exposed to marine and industrial atmospheres. Seasonal 1 to 12 month corrosion losses of these metals and alloys were determined by a weight loss method. The weight losses showed strong corrosion of mild steel, galvanized iron, Cu and Zn and minor effect on Al and Cu-Zn alloys. Linear regression analysis was conducted to study the mechanism of corrosion. The composition of corrosion products formed on the metal surfaces was identified by x-ray diffraction and Fourier transform infrared spectroscopy.

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Section: Ftir Spectroscopymentioning

confidence: 84%

Corrosion behavior of metals and alloys in marine-industrial environment

Natesan

Selvaraj

Manickam³

et al. 2008

Science and Technology of Advanced Materials

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“…The aerosol's chemistry affects its potential corrosiveness (Lau et al 2008;Wan et al 2002;Lobnig et al 1994) and determines the values of DRH and CRH (Martin 2000;Martin et al 2003;Seinfeld and Pandis 1998;Potukuchi and Wexler 1995). Thus, the second half of the PM 2.5 samples used in the AEC was chemically analysed to determine the aerosol chemical composition.…”

Section: Aerosol Chemical Characterizationmentioning

confidence: 99%

“…(Shehabi et al 2008). If aerosol deposits on electronic circuitry and the ambient RH exceeds the aerosol DRH, or remains higher than the aerosol CRH (while decreasing from above the DRH), the water-soluble ionic compounds are dissociated and the aerosol is then electrically conductive and corrosive (Song et al 2013;Shehabi et al 2008;Tencer 2008;Syed 2006;Yang et al 2006;Lobnig et al 1994). This behaviour constitutes a serious risk in DCs because, as Leiva et al (2013) have shown, atmospheric pollution is often related with high concentrations of water-soluble inorganic ions.…”

Section: Introductionmentioning

confidence: 99%

Determination of aerosol deliquescence and crystallization relative humidity for energy saving in free-cooled data centers

Ferrero

D'Angelo

Rovelli

et al. 2014

Int. J. Environ. Sci. Technol.

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This study examines an innovative application of the aerosol deliquescence and crystallization determination, for corrosion prevention and energy-saving strategies in free-cooled data centers. Aerosol deliquescence and crystallization were investigated by combining standardized aerosol sampling techniques (i.e. EN-14907) with the assessment of the electrical effects of aerosol, while varying relative humidity within a specially designed aerosol exposure chamber. Aerosol samples collected in the Po Valley (Northern Italy) were analysed; a clearly defined hysteresis cycle (deliquescence and crystallization at 60.5 ± 0.8 and 47.9 ± 0.7 % of RH, respectively) was found. Results were applied to a data center designed for the Italian National Oil and Gas Company, making it possible to identify a critical area for direct free cooling at this data center. As a result, aerosol hydration was avoided (thus preventing aerosol from damaging electrical components) and a large amount of energy saved (using free cooling instead of air-conditioning); the potential energy saving achieved in this way was 79 % (compared to the energy consumption of a traditional air-conditioning system): 215 GWh of energy was saved, and 78 fewer kt of equivalent CO 2 was emitted per year. Moreover, in order to evaluate whether a real-time estimation of the aerosol hydration state within a data center could be performed, measured deliquescence and crystallization were compared through simulations performed using three different models: two thermodynamic models for deliquescence and a parametric model for crystallization. The results obtained tend to converge in terms of deliquescence, whereas in the case of crystallization, they failed to effectively simulate experimental aerosol behaviour.

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“…The atmospheric corrosion of copper has been studied extensively due to the vast use of this metal in many engineering applications including the electrical-electronic industry [1][2][3][4]. Copper corrosion products formed during field exposure have been analyzed using several techniques, including X-ray Photoelectron Spectroscopy (XPS), Infrared Reflection Absorption Spectroscopy (IRAS), Auger Electron Spectroscopy (AES) and X-ray Diffraction (XRD) [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Application of electrochemical noise to evaluate outdoor atmospheric corrosion of copper after relatively short exposure periods

et al. 2008

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This study focused on the application of electrochemical noise to assess the protection level of corrosion products formed on copper during relatively short exposure time in different outdoor atmospheres. Electrochemical noise, cathodic reduction measurements and gravimetric (mass loss) analysis were applied to copper samples exposed at urban and rural/industrial areas in Cuba for 4 months. Measurements of Electrochemical current noise indicated that the poorest protective corrosion products were formed on samples exposed to atmospheres with high concentration of H 2 S which agreed with the corrosion rate determined by mass loss and electrochemical chronopotentiometry (cathodic reduction). The electrochemical noise methodology proposed in this work showed acceptable and reproducible results by using an electrochemical cell in which the electrolyte was formed by a distilledwater wetted cloth in contact with the compounds present on a corroded metallic surface. This methodology indicated that the corrosion protection level of the corrosion products formed on copper is related to the corrosivity of the atmosphere.

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Mechanism of Atmospheric Corrosion of Copper in the Presence of Submicron Ammonium Sulfate Particles at 300 and 373 K

Cited by 50 publications

References 4 publications

Corrosion behavior of metals and alloys in marine-industrial environment

Corrosion behavior of metals and alloys in marine-industrial environment

Determination of aerosol deliquescence and crystallization relative humidity for energy saving in free-cooled data centers

Application of electrochemical noise to evaluate outdoor atmospheric corrosion of copper after relatively short exposure periods

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