A morphological and electrochemical comparison of the corrosion process of aluminum alloys under simulated acid rain conditions

Gerengi, Hüsnü; Bereket, Gözen; Kurtay, Mine

doi:10.1016/j.jtice.2015.05.023

Cited by 38 publications

(24 citation statements)

References 27 publications

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“…The coastal atmosphere is characterized with extreme environmental conditions, like high salinity and high humidity . Industrial atmosphere contains considerable amount of oxides of sulfur, nitrogen, and carbon, which are produced by the emissions of power plants, industry as well as waste gases and result in a drift of the pH value of rainfall into acidic region, leading to the fast deterioration of aluminum and its alloys subjected to such environments . When exposed to these atmospheres, the surfaces of aluminum and its alloys degrade and form a wide variety of corrosion products which play an important role in subsequent corrosion.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric corrosion comparison of antirust aluminum exposed to industrial and coastal atmospheres

Wang

Zhang

Jiang

et al. 2018

Materials & Corrosion

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The atmospheric corrosion behavior of antirust aluminum alloys 3A21 and 5A05 in industrial and coastal atmospheres was investigated and compared. Weight loss results, together with corrosion morphology characterization, suggest that the coastal atmosphere is much more corrosive to antirust aluminum than the industrial atmosphere. 5A05 alloy has better localized corrosion resistance than 3A21 alloy, and the corrosion rate shows a decreasing tendency with exposure time. After 3 years of exposure, the antirust aluminum samples only suffer pitting corrosion attack and retain their mechanical properties well. In the two atmospheres, the corrosion products are mainly oxides, aluminum hydroxychloride, aluminum sulfate hydrate, and basic aluminum sulfate. Besides, the atmospheric corrosion mechanism and the corrosion comparison between the two atmospheres were also discussed.

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Section: Introductionmentioning

confidence: 99%

Atmospheric corrosion comparison of antirust aluminum exposed to industrial and coastal atmospheres

Wang

Zhang

Jiang

et al. 2018

Materials & Corrosion

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“…The measure of goodness of fit of the model was the v 2 parameter; during the analysis, v 2 did not exceed 1 9 10 -4 , attesting to a very high fit of received impedance spectra to the proposed electrical equivalent circuit. The same circuit has also been used in similar aggressive environments [13]. The Linear Polarization Technique was applied using a scan rate of 0.125-1 mV/s and a polarization of ±10 mV in relation to the Open Circuit Potential.…”

Section: Methodsmentioning

confidence: 99%

Investigation of corrosion resistance of steel used in beet sugar processing juices

ADA

Altanlar²,

Erdem³

et al. 2016

Int J Ind Chem

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In this study, corrosion behaviors of materials used in diffusion units and equipment used in juice clarification steps and tubes in evaporators at Ankara Sugar Factory were investigated in terms of juice production and juice clarification processes as well as juice medium at evaporation stages. The measurements have been performed by comparing steel types used in these units and alternative types of steels that can also be used during the study. For this purpose, pH and Brix (Bx, refractometric dry matter) values of raw juice, thin juice and juice taken from evaporator have been measured during 2009-2010, 2010-2011, and 2011-2012 campaign periods of Ankara Sugar Factory. In addition to these measurements, traditional weight loss and electrochemical tests such as Linear Polarization Resistance (LP), Tafel Extrapolation (TP), Electrochemical Impedance Spectroscopy (EIS) were performed to measure and compare the corrosion rate of the metals used in different juice mediums. The metals included in the study were AISI 316L, AISI 304L grade stainless steel, St 37.2 grade carbon steel and nickel-coated St 37.2. The highest and the lowest corrosion rates were recorded for raw juice and thin juice, respectively. St 37.2 steel had the fastest corrosion rate, whereas the stainless steel AISI 316L has the slowest corrosion rate. However, AISI 316L shows only slightly higher corrosion resistance compared to the corrosion resistance of AISI 304L in different juices. Therefore, AISI 304L steel, which is cheaper than AISI 316L, can be selected as a substation of St 37.2 steel.

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“…(Preparation of Corrosion Cell) Alaşımların %3.5 NaCl ortamındaki korozyon mekanizmasını belirlemek için numuneler Şekil 2'de gösterildiği gibi hazırlanmıştır [12]. Yalnızca silindirin taban alanlarından bir tanesi açıkta kalacak şekilde yalıtkan boru içerisine konularak üzerinde ve etrafında kalın bir polyester tabakanın oluşması sağlanmıştır [13].…”

Section: Korozyon Hücresinin Hazırlanmasıunclassified

TOZ METALURJİSİ İLE ELDE EDİLEN DÜŞÜK KARBON ÇELİĞİNİN %3.5 NaCl ORTAMINDAKİ KOROZYONUNA NİYOBYUM VE VANADYUMUN ETKİSİ

Uygur¹,

Gerengi²,

Yıldız³

et al. 2017

NWSA

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ÖZ THE EFFECT OF NIOBIUM AND VANADIUM ON CORROSION OF LOW CARBON STEEL OBTAINED BY POWDER METALLURGY IN 3.5%NaCl ENVIRONMENT ABSTRACTIn this study, corrosion mechanism of new alloys produced with addition of niobium and vanadium at the ratio of 0.05 wt. % and 0.075 wt. % into chemical composition of reference sample was investigated in 3.5% NaCl environment. The Dynamic Electrochemical Impedance Spectroscopy (DEIS) method allowing instantaneous detection of corrosion mechanism was used for the first time with this study for determining the effect of micro alloy elements on corrosion. Surface morphology of the prepared samples were compared with electrochemical data examined by using optical microscope at the end of 15 hour DEIS experiments. According to experimental results, the increase in amount of niobium and vanadium indicated that produced new alloys decreased corrosion rate occurring in 3.5% NaCl environment. R ct value obtained at the end of experiment show increased averagely at rate of 44-57% with the addition of alloy elements. Obtained DEIS data and optical images support each other. It was observed that there were more corrosion and accordingly deformation on surface of sample without addition of alloy elements.

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A morphological and electrochemical comparison of the corrosion process of aluminum alloys under simulated acid rain conditions

Cited by 38 publications

References 27 publications

Atmospheric corrosion comparison of antirust aluminum exposed to industrial and coastal atmospheres

Atmospheric corrosion comparison of antirust aluminum exposed to industrial and coastal atmospheres

Investigation of corrosion resistance of steel used in beet sugar processing juices

TOZ METALURJİSİ İLE ELDE EDİLEN DÜŞÜK KARBON ÇELİĞİNİN %3.5 NaCl ORTAMINDAKİ KOROZYONUNA NİYOBYUM VE VANADYUMUN ETKİSİ

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