Influence of water salinity on corrosion risk—the case of the southern Baltic Sea coast

Abstract

Water corrosivity in Gdansk Bay, Poland, the southern part of the Baltic Sea, was investigated. The analysed region is heavily industrialized, and the coastline is very diverse. Twenty-seven test points along the coastline were selected. Water parameters such as salinity, total dissolved solids content, resistivity, conductivity, oxygenation, pH and corrosion rate were determined. The results of the investigation are presented. Water samples were collected, and structural steel specimens were exposed in the water for 2 months. The corrosion rate for each test point was determined and plotted on a map. The spatial distribution of water parameters was calculated using the ‘inverse distance to a power’ method and presented on the maps. Salinity did not exceed 0.7 %, and average corrosion rate equalled 0.0585 mm/year.

Corrosion Behavior of Mild Steel in Seawater from Northern Coast of Java and Southern Coast of Bali, Indonesia

“…The similar magnitude of conductivity in the different seawater sites points to a similar concentration of dissolved ions or total dissolved various salts. Corrosion rates tend to increase when water conductivity increases [14]. However, the present results show that the corrosion rate of the steel in all test solutions tended to increase up to 1 month of exposure but there was no change in conductivity level in the solutions.…”

“…The breakage of the passive film is an active site for anodic reactions. ] [14]. It should be noted that Cl -ions in seawater are correlated mainly to the NaCl, MgCl 2 and KCl content [15].…”

“…The TDS parameter quantifies both organic and inorganic compounds in the ionic, particle or colloidal states [16]. Water can be regarded as fresh (TDS < 1,500 ppm), brackish (1,500 ppm < TDS < 5,000 ppm) or saline (TDS > 5,000 ppm) [14]. All test solutions were categorized as saline solutions due to salinity higher than 5 g/L.…”

ZVI (Fe0) Desalination: Stability of Product Water

“…Cl´ions act as a catalyst and phase distributor for iron corrosion (rust formation) [63][64][65][66][67][68][69]. The redox (Eh, pH) relationships for Cl, Fe and Na species (ions and precipitants) are provided in [63].…”

Anti-Collision Assessment and Prediction Considering Material Corrosion on an Offshore Protective Device

“…Many researchers have studied the mechanism of steel corrosion in marine and offshore environments. Jyoti et al [5] summarized previous research work and reported that temperature [6], pH value [7], salinity [8], dissolved oxygen [9], and water velocity [10] were the main physical factors that affected the corrosion responses of steel. Besides the investigation of corrosion factors, other studies have focused on mechanism optimization.…”