Copper Corrosion in Industrial Waters. A Multimethod Analysis

Monticelli, C.; Fonsati, M.; Mészáros, Gábor; Trabanelli, G.

doi:10.1149/1.1391775

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…Various in situ and ex situ characterizations have been applied for speciation of products of copper corrosion and to track the evolution of corrosion processes over time. − Typical compounds that are produced during copper corrosion are deposits of calcite (CaCO 3 ), calcium phosphate, cuprite (Cu 2 O), and copper hydroxide (Cu(OH) 2 ). Corrosion events are influenced by a number of different factors, such as the exposure time, concentration of ions, ,,− pH, − and the presence of dissolved oxygen .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanoscale Investigation of the Impact of pH and Orthophosphate on the Corrosion of Copper Surfaces in Water

2010

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Advanced surface characterization techniques were used to systematically investigate either the corrosion or passivation of copper after immersion in water as impacted by pH and orthophosphate water chemistries. Atomic force microscopy, depth profiling with time-of-flight secondary ion mass spectrometry, and X-ray diffraction were used to evaluate changes in surface chemistry of copper surfaces resulting from various chemical treatments. Nanoscale differences in surface morphology are clearly evident after 6 and 24 h immersion in water samples. Orthophosphate and pH dramatically influence the evolution and progression of changes during surface corrosion. For example, in the absence of orthophosphate the surface of copper exposed to water at pH 6 had formed relatively large cubic crystals on the surface up to 400 nm in height. In the presence of orthophosphate, the morphology and growth rate of corrosion byproduct changed dramatically, and the formation of identifiable crystals diminished. These investigations provide insight into the mechanisms of surface passivation and the evolution of nanoscale mineral deposits on surfaces at very early stages of the corrosion of copper surfaces in water.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanoscale Investigation of the Impact of pH and Orthophosphate on the Corrosion of Copper Surfaces in Water

2010

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“…This research was consistent with the results of copper corrosion in simulated industrial water by Monticelli. C et al [37]. In addition, a greater amount of Fe 0 was oxidized to Fe (Ⅰ) oxide and Fe(Ⅱ) oxide by participating in the EF reaction, as shown in Figure 4c,d.…”

Section: Characterization Of Electrodementioning

confidence: 84%

Degradation of 2-Naphthol in Aqueous Solution by Electro-Fenton System with Cu-Supported Stainless Steel Electrode

Cheng

Zhang

Zhou

et al. 2022

Water

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For the treatment of 2-naphthol wastewater, the homogeneous electro-Fenton process was considered as an effective method but some disadvantages greatly restrict its application. The three-dimensional electro-Fenton (3D-EF) system using a nano zero-valent iron-supported biochar (NZVIs-BC) particle electrode and a Cu-supported stainless steel electrode (Cu-SSE) was proposed to avoid the disadvantages of the homogeneous electro-Fenton. In this work, the 3D-EF system was developed, which consisted of a Cu-SSE (cathode), a graphite rod (anode) and a NZVIs-BC particle electrode. The effect of the ratio of ferrous sulfate heptahydrate (FS) to rice straw (RS), CuSO4•5H2O amount, initial pH of 2-naphthol wastewater and current intensity (the output current of the power supply) on the removal rate of 2-naphthol were investigated. It is noteworthy that more than 98.36% of the 2-naphthol in aqueous solution was removed by the 3D-EF system, and only about 60.09% of 2-naphthol was removed by the homogeneous electro-Fenton system. Furthermore, naphthalene, benzoic acid, β-naphthoquinone, 1, 2-naphthalenedione, phenol and aromatic hydrocarbon were the main degradation products of 2-naphthol by the 3D-EF system; the toxicity of 2-naphthol wastewater was also greatly reduced.

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“…Copper is a widely used material in large infrastructure applications (grounding, While studies concerning copper corrosion in atmospheric or aqueous environments are abundant in the literature [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26], the corrosion of copper or copper−based alloys in soils is scarce [26][27][28][29][30][31][32]. Despite this there is great importance in many industrial applications, as well as in archaeological studies of metal artifacts [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Validation of the Steinrath Index Predictions for the Degree of Soil Aggressiveness Toward Copper Corrosion in Soils Contaminated with Chlorides

Fonseca¹,

Niculita²,

Ornelas³

et al. 2015

CORROSION

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The main goal of this study is to validate the Steinhrath index predictions towards copper corrosion in two different soils (loamy and sandy) non−modified and modified with chlorides, reaching the typical levels of seawater and Steinrath indexes varying between (-3) and (-8). Average corrosion rates between 4.5±0.3 and 124.5±0.5 µm y -1 showed to be in good agreement with the predictions of the Steinrath index.The copper surfaces, covered with corrosion products, were analyzed by visual observation, scanning electron microscopy coupled to energy dispersive spectroscopy (SEM/EDS), powder X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) spectroscopy. Cuprite (Cu 2 O) has been identified, by XRD, as the main constituent on all the surfaces, with traces of atacamite (Cu 2 (OH) 3 Cl) on top of the Cu 2 O layer. FTIR spectra suggest that, sulfate, silicate and/or hydroxyls are likely to be present. and concluded that, for short time exposures, the mass loss decreases as the amount of water increases.Bech-Nielsen et al. [19] have studied the behavior of copper in moderately acid medium (pH 5.0) and non−deareated chloride aqueous solutions (3% NaCl). Using Auger spectroscopy, the authors identified the presence of a Cu 2 O layer on the surface of copper samples. The layer thickness was found to increase with the exposure time.Soil corrosivity is not a directly measurable parameter and corrosion is largely a random phenomenon, hence no explicit relationship exists between soil properties and soil corrosivity. The soil texture is a parameter that can influence its aggressiveness since the drainage and aeration are texture dependent. Gerwin and Baumhauer [31] have concluded that corrosion of buried iron objects decreased in loamy soils due to oxygen deficiency. On the other hand, a sandy soil results in comparatively good drainage and aeration.Correlation between the corrosion rate of pipeline made of steel and soil parameters has been investigated under both controlled laboratory and natural outdoor conditions by Murray and Moran [33]. They have found a good correlation between corrosion rates of laboratory and outdoor samples. In general, the moisture level appears to control the corrosion rate following a semilog law with water concentration ranging between low (typically 6 wt%) and near saturation (typically 20 to 25 wt%) concentrations. Wang et al. [34] have concluded that the decrease of dissolved oxygen contributes to decrease gradually the corrosion rate of X80 steel in acidic soil solution. In addition, Gardiner and Melchers [35] concluded that oxygen and proton ion (H+) as the most common cathodic depolarizers, both playing its role in the corrosion process of steel in soils.

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Copper Corrosion in Industrial Waters. A Multimethod Analysis

Cited by 4 publications

References 16 publications

Nanoscale Investigation of the Impact of pH and Orthophosphate on the Corrosion of Copper Surfaces in Water

Nanoscale Investigation of the Impact of pH and Orthophosphate on the Corrosion of Copper Surfaces in Water

Degradation of 2-Naphthol in Aqueous Solution by Electro-Fenton System with Cu-Supported Stainless Steel Electrode

Validation of the Steinrath Index Predictions for the Degree of Soil Aggressiveness Toward Copper Corrosion in Soils Contaminated with Chlorides

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