Brass corrosion in tap water distribution systems inhibited by phosphate ions

Yohai, L.; Vázquez, M.; Valcarce, M.B.

doi:10.1016/j.corsci.2010.12.005

Cited by 52 publications

(27 citation statements)

References 34 publications

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“…1,[4][5][6][7][8][9][10][11][12] In this work, the influence of the amino group in 1,2,4-triazole (TRI) in position 3, that is, 3-amino-1,2,4-triazole (3-AT) ( Figures 1A and 1E), is investigated in detail to explain whether and why it has an influence on the corrosion inhibition effect for brass in 3 wt.% NaCl solution. Brass is generally an important material for various applications [13][14][15][16][17][18][19][20][21][22][23] but corrodes considerably in chloride-containing solutions. [24][25][26][27] Initially, the corrosion inhibition effect was determined after short-and long-term immersion periods (from 1 h to 31 days) using electrochemical techniques (electrochemical impedance spectroscopy, EIS, and potentiodynamic curve measurements), 3D profilometry, and atomic force microscopy (AFM).…”

Section: Introductionmentioning

confidence: 99%

The influence of the amino group in 3‐amino‐1,2,4‐triazole corrosion inhibitor on the interface properties for brass studied by ToF‐SIMS

Finšgar

2021

Rapid Comm Mass Spectrometry

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Rationale The detailed surface analysis of corrosion inhibitor surface layers by the application of 1,2,4‐triazole (TRI) and 3‐amino‐1,2,4‐triazole (3‐AT) compounds adsorbed from a 3 wt. % NaCl solution on the brass surface was performed by time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS). The results obtained were additionally supported by X‐ray photoelectron spectroscopy (XPS) measurements. Methods The description of the corrosion inhibitor surface layers was elaborated by using ToF‐SIMS and molecular‐specific signals. Characteristic molecular‐specific signals were used to perform 2D ToF‐SIMS imaging and cooling/heating experiment associated with ToF‐SIMS measurements. A detailed surface analysis using high‐resolution angle‐resolved XPS and gas cluster ion beam sputtering in combination with XPS measurements was also carried out. Results Organometallic complexes were formed after the corrosion process of brass with the release of Cu and Zn ions that subsequently connect with TRI or 3‐AT. Using ToF‐SIMS, possible spectral interferences of the organometallic species were considered due to the presence of different organometallic compounds composed of the two main Cu and Zn isotopes, that is, 63Cu and 65Cu and 64Zn and 66Zn. Using the molecular‐specific signals, 2D imaging was performed, which showed a different distribution of different species on the brass surface. In addition, a ToF‐SIMS experiment on thermal stability showed that most of the TRI‐ and 3‐AT‐related species desorb from the brass surface at 460 °C and 405 °C, respectively. Conclusions ToF‐SIMS analysis confirmed the formation of Cu/Zn‐ or Cu2‐inhibitor organometallic complexes, whereas the formation of Zn2‐inhibitor organometallic complexes on the brass surface was not confirmed. ToF‐SIMS imaging showed complete coverage of the brass surface with different Cu/Zn‐ or Cu2‐inhibitor organometallic complexes. The high thermal stability of the corrosion inhibitor surface layers was confirmed by ToF‐SIMS.

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Section: Introductionmentioning

confidence: 99%

The influence of the amino group in 3‐amino‐1,2,4‐triazole corrosion inhibitor on the interface properties for brass studied by ToF‐SIMS

Finšgar

2021

Rapid Comm Mass Spectrometry

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“…However, in the presence of chloride ions in water increase, the risk of localized corrosion reactions and accelerated pitting or preferential leaching of the Zn rich phase is observed. In highly alkaline conditions, brass represents good pitting resistance due to the formation of zinc oxide ZnO in the native oxide layer [14][15][16][17][18]. Previous studies suggested that in the presence of microorganisms different corrosion mechanism occur on the copper and copper alloy surfaces due to the formation of differential aeration cells, selective leaching, under depos it corrosion and cathodic depolarization etc.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pseudomonas aeruginosa Strain ZK Biofilm on the Mechanical and Corrosion Behavior of 316L Stainless Steel and α-brass

Farooq

Zubair

Wadood³

et al. 2021

J. Electrochem. Sci. Technol

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This research work aims to investigate the effect of the aerobic bacterium, Pseudomonas aeruginosa on the mechanical and electrochemical properties of the 316L stainless steel and α-brass. These properties of both the alloys were determined after 7 days of exposure to the controlled and inoculated media at 37 o C. The microstructural and electrochemical test results revealed the deleterious effects of Pseudomonas aeruginosa. After exposure to the inoculated medium, the scanning electron microscopy (SEM) results showed the larger pitting and formation of relatively dense biofilm on α-brass compared to 316L stainless steel. The tensile strength and hardness of 316L stainless steel were slightly affected after exposure to the controlled and inoculated media. After exposure to the controlled medium and inoculated media, the tensile strength of the α-brass was least affected but a significant decrease in the hardness (from 165 HV to 124 HV) was observed due to the severe attack induced by the Pseudomonas aeruginosa. Similarly, the open-circuit potential of the 316L stainless steel in the inoculated medium was measured to be less active (-410 mV vs Ag/AgCl) than α-brass (-550 mV vs Ag/AgCl). In the inoculated medium, potentiodynamic polarization curves confirmed the severe attack of Pseudomonas aeruginosa on α-brass (7.15 × 10 -2 mm/year) compared to 316L stainless steel which registered a corrosion rate of 5.14 × 10 -4 mm/year.

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“…Brass is frequently exposed to solutions with a high chloride content [1], for example in the case of seawater desalination plants, due to its interesting properties such as high formability, electrical [2] and thermal conductivity, etc. [3,4]. Moreover, brass degradation due to pitting corrosion in chloride-containing solution leads to structural failure and serious economic losses [5,6].…”

Section: Introductionmentioning

confidence: 99%

Analytical Study of CuZn 30 and CuZn 39 Brass Surfaces in 3% NaCl Solution Under Polarization

et al. 2020

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The main objective of the investigation is to identify the role of beta phase on the corrosion behavior of CuZn alloys in chloride solution. The experimental study was based on the characterization and identification of the anodized brass films formed on the surface of two alloys: CuZn30 and CuZn39, abbreviated by CuZnα and CuZnαβ. Oxidation was carried out at different potentials chosen from the anodic polarization curves recorded beforehand with the two alloys. The main analysis techniques are AFM, SEM, EDS and XRD. Results indicate that the corrosion mechanism is similar for both alpha and alpha beta brasses and followed the same succession of steps. Nevertheless, the rate of dezincification is higher in the case of CuZnαβ: the surface of the attack is larger, and different plugs could be created at the same potential. Therefore, the composition of the protective layer is more diverse than that of CuZnα, while much more varied oxide and hydroxide species are likely to be formed.

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Brass corrosion in tap water distribution systems inhibited by phosphate ions

Cited by 52 publications

References 34 publications

The influence of the amino group in 3‐amino‐1,2,4‐triazole corrosion inhibitor on the interface properties for brass studied by ToF‐SIMS

The influence of the amino group in 3‐amino‐1,2,4‐triazole corrosion inhibitor on the interface properties for brass studied by ToF‐SIMS

Effect of Pseudomonas aeruginosa Strain ZK Biofilm on the Mechanical and Corrosion Behavior of 316L Stainless Steel and α-brass

Analytical Study of CuZn 30 and CuZn 39 Brass Surfaces in 3% NaCl Solution Under Polarization

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