Underfilm Corrosion of Transmission Tower Cross-Arms Service-Used in a Pacific Coast Area

Fuse, Norikazu; Naganuma, Atsushi; Fukuchi, Tetsuo; Hori, Yasuhiko; Mizuno, Maya; Fukunaga, Kaoru

doi:10.5006/1736

Cited by 15 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The interest in studying the processes of underfilm corrosion that appeared in the mid-20th century [ 9 , 10 , 11 , 12 , 13 ] has not decreased to the present day [ 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 ]. However, despite the many years of research into this problem, the mechanism of underfilm corrosion of metals has still not been fully understood [ 11 , 12 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 ]. Therefore, a detailed study of the processes occurring on metal under a polymer film in the presence of an electrolyte at the metal-coating interface is a relevant task.…”

Section: Introductionmentioning

confidence: 99%

Specifics and Methods of Inhibiting the Underfilm Corrosion of Carbon Steel

Petrunin,

Yurasova,

Rybkina

et al. 2024

Polymers

View full text Add to dashboard Cite

The process of metal dissolution under a delaminated insulating polymer coating (underfilm dissolution) has been studied. For this purpose, we used an experimental setup that simulates the process of corrosion of underground metal structures in the presence of through defects in the polymer coating and/or extended areas of peeling of the polymer coating from the metal (loss of adhesion)—subfilm cavities partially or completely filled with electrolyte. In particular, the distribution of the protective current under a peeled polymer coating was studied, and a sharp decrease in the value of the protective current was shown at a distance of 1–3 cm from the edge of the defect with a gap between the metal and the coating of 1–6 mm. The localized nature of metal corrosion under the exfoliated polymeric coating has been demonstrated. The ratio of the areas with accelerated corrosion to the total area of the metal can be 1 to 100. It has been established that there are areas of anodic dissolution of the metal during cathodic polarization of the entire sample with a peeled coating. The activating effect of carbon dioxide and hydrogen sulfide on the corrosion and anodic dissolution of steel under the coating was shown. So, it has been established that the dissolution current flowing from the anodic sections on a surface can increase approximately 10 times in the presence of carbon dioxide and hydrogen sulfide. A synergistic effect of these compounds on the process of localized underfilm corrosion of steel was detected. It has been developed a mechanism for the formation of localized corrosion damage to steel under a delaminated polymeric coating, which can be the nuclei of corrosion cracks upon reaching a certain level of mechanical loads, i.e., stress corrosion cracking (SCC) of carbon steel. Possible manners of inhibiting underfilm dissolution of metals are considered, and a method for pre-treatment of the surface with solutions of organosilanes, which ensures the formation of surface self-assembled polymeric siloxane nanolayers responsible for inhibiting underfilm corrosion of steel, is proposed.

show abstract

Section: Introductionmentioning

confidence: 99%

Specifics and Methods of Inhibiting the Underfilm Corrosion of Carbon Steel

Petrunin,

Yurasova,

Rybkina

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

“…Nowadays the galvanization treatment has been widely used for the preservation of steels [10][11][12]. In the galvanization process, the descaled steel is immersed in a liquid zinc solution of about 450 °C to creat a zinc layer that provides corrosion protection for the steels on the surface of the steel [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Degradation behavior of mechanical properties of galvanized steel exposed to the wind and sand environment

Wang

Liu

et al. 2022

Materialwissenschaft Werkst

View full text Add to dashboard Cite

In this work, the degradation of mechanical properties of galvanized steel under wind and sand erosion environment was studied. The law of weight loss of galvanized steel in corrosive environment was studied by accelerated corrosion experiment. The micro-morphology and formation mechanism of corrosion products were investigated in detail by scanning electron microscopy and x-ray diffraction, respectively. In addition, the mechanical properties of galvanized steel such as elastic modulus, yield strength, ultimate strength and elongation were investigated in detail. The results show that the weight loss rate of the zinc layer on the surface of galvanized steel follows an exponential function. Without the protection of the zinc layer, the mechanical properties of the steel will decrease quickly. Therefore, a zinc layer on the steel is necessary. Besides, it is necessary to strengthen the hot-dip galvanizing treatment on galvanized steel. This work provides a valuable reference for the corrosion behavior and protection measures of galvanized steel in the wind and sand environment.

show abstract

“…A major factor causing the corrosion is long-term exposure to airborne sea-salt particles (e.g. [3]). While the amount of airborne sea-salt particles decays exponentially with increasing distance from the coast, they vary markedly according to the different offshore winds (e.g.…”

Section: Introductionmentioning

confidence: 99%

Prediction of surf-zone and open-ocean airborne sea-salt spatial distribution via computational fluid dynamics and statistical method

Suto

Kihara

Hattori

et al. 2021

Corrosion Engineering, Science and Technology

View full text Add to dashboard Cite

The atmospheric corrosion of steel is a critical design and maintenance issue for structures such as electric transmission towers and bridges, which are generally widely dispersed. As airborne sea-salt particles are a major corrosion factor, the long-term cumulative spatial distributions of sea salt deposited on the structure surfaces are needed. In this study, we predict the long-term cumulative spatial distribution of sea-salt particles originating from the surf zone and from the open ocean, combining a computational fluid dynamics simulation and a statistical procedure. A new prediction method is introduced for sea-salt particle concentration originating from the surf zone and is validated based on comparisons with observed data. The predicted results indicate that surf-zone-originating particles increase remarkably the amount of airborne sea-salt particles near the coastline and can travel more than 5 km inland.

show abstract

Underfilm Corrosion of Transmission Tower Cross-Arms Service-Used in a Pacific Coast Area

Cited by 15 publications

References 22 publications

Specifics and Methods of Inhibiting the Underfilm Corrosion of Carbon Steel

Specifics and Methods of Inhibiting the Underfilm Corrosion of Carbon Steel

Degradation behavior of mechanical properties of galvanized steel exposed to the wind and sand environment

Prediction of surf-zone and open-ocean airborne sea-salt spatial distribution via computational fluid dynamics and statistical method

Contact Info

Product

Resources

About